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0671E5

Data Systems Administrator

E-5 (Sergeant) · Marines

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

You are the section chief the S6 calls when the GCSS-MC replication fails the night before the MEF logistics review. You are expected to have a working hypothesis, a restoration timeline, and a plan to prevent recurrence before the S6 finishes the sentence. If your answer is 'let me check,' you have not built the section's monitoring rhythm tightly enough. Build the section so you already know the answer before the call comes.

The Honest MOS Read
Sgt in the 0671 community is the section chief rank — where the full data systems accountability picture sits on one set of shoulders and the section's performance is the section chief's professional record. You are no longer reporting to a section chief about the team's GCSS-MC health. You are the section chief who reports to the S6, manages the ISSM relationship, and writes FitReps on the Cpls whose careers are shaped by the Section A narrative you put on paper. The technical load at Sgt is a translation and oversight problem. The battalion communications plan comes in as an annexure — server deployment architecture, Active Directory replication plan, GCSS-MC server configuration, SQL Server maintenance windows, ACAS scan schedule, backup retention policy — and you translate it into a data systems support order that two Cpls can execute with their teams without a follow-up brief. If your Cpls need clarification calls during execution, the support order was not specific enough. Fix the order, not the Cpl. ACAS compliance management at the section-chief tier means owning the POA&M for every finding on every server in the section's inventory. Not just the CAT I findings — every finding, categorized, with a remediation timeline and a documented action. The POA&M is the signed accountability record. The verbal 'we're working on it' is invisible to the ISSM, invisible to the S6, and invisible to the IG. The signed POA&M is the evidence. Active Directory administration at the Sgt tier is domain-level governance — group policy design, OU architecture, privileged account management, and the quarterly access-control audit that the ISSM uses to validate the section's compliance posture. The quarterly audit is a known event with a known scope; the section chief who manages the domain clean produces an audit report with no outstanding action items. The section chief who manages the domain reactively produces an audit report with a list of remediation actions due by the next quarter — and the ISSM remembers which section produces which kind of report. GCSS-MC data integrity is the Sgt's highest-visibility technical responsibility. The S4's logistics picture is only as accurate as the replication health of the servers the section manages. A GCSS-MC replication failure that is caught and corrected before the S4's daily review is a routine maintenance event. One that is caught by the S4 during a briefing to the battalion S3 is a section-chief conversation with the S6 that afternoon. Build the monitoring rhythm so that the section catches failures before the S4 does — every time. The FitRep is the Sgt's most consequential tool — and it has nothing to do with SQL Server. Under MCO 1610.7, the Section A narrative you write on each Cpl is what the reporting senior and reviewing officer are building the attribute rationale from. Write in specific, observed-behavior terms. The Cpl who managed the battalion's Active Directory domain through a regimental MCCRE evaluation with zero ISSM findings gets a Section A that says exactly that. The Cpl who completed routine account provisioning tasks adequately gets a Section A that reflects that. Relative value is the honest ranking — not the ranking that makes everyone feel good.
Career Arc
  • 01Pin Sgt via cutting score — Sergeants Course complete, composite above the cut, section chief's recommendation in hand.
  • 02First section-chief assignment: five to fifteen Marines, full ownership of the battalion server inventory's ACAS compliance posture and GCSS-MC replication monitoring.
  • 03First independent data systems support order: translate the battalion communications plan into a section execution order that Cpls brief and execute without a follow-up call.
  • 04Write FitReps on two to three Cpls per cycle under MCO 1610.7 — the first cycle teaches the Sgt whether his Section A is specific enough to survive the battalion FitRep board.
  • 05IAVA compliance window management: track IAVA alerts against the section's server inventory and remediate before the window closes and the finding goes to the regiment S6 automatically.
  • 06SSgt board FitRep profile and Career Course slot built simultaneously — the board is a FitRep-record review, not a composite-score cut.
Common Screwups
  • ×Running a database production cutover without a tested rollback procedure and a defined go/no-go decision point. A failed GCSS-MC migration at 0200 with no rollback path is a supply chain incident that travels up the chain before the section chief finishes the first recovery attempt. The rollback procedure is tested before the maintenance window opens — not assembled under pressure at 0300.
  • ×Allowing the Active Directory privileged account list to go un-audited past the ISSM's quarterly window. An orphaned Domain Admin account that appears on the ISSM's audit is a CAT I finding with the section chief's name on it. 'We forgot' is not a POA&M — it is the beginning of a formal compliance incident.
  • ×Hiding a server outage from the S6 to avoid the conversation. The S6 finds out from the S4, who found out from the logistics officer, who found out when the GCSS-MC data stopped posting correctly to the MEF G4 review. The section chief who reported the outage immediately — status, working diagnosis, restoration timeline — is the section chief the S6 trusts with the next hard problem.
  • ×Writing FitRep Section A as a wish list rather than an evaluation. The battalion FitRep review board compares the Sgt's Section A input against the observable performance of the Cpl it describes. An inflated Section A for a Cpl the company commander does not recognize as top-tier is a reliability problem for the reporting senior who has to defend it — and the Sgt who consistently inflates gets a reputation at the battalion board level.
  • ×Letting a server patch cycle slip past its IAVA compliance window. An IAVA past due on a production server is a reportable compliance failure that goes to the regiment S6 automatically. The section chief who manages the IAVA calendar proactively is the section chief who briefs the remediation, not the finding.

A Day in the Life

  • 0500Wake. Phone check — ACAS alerts, SQL Server Agent job history from overnight, any messages from the S6 or ISSM. Nothing urgent? PT uniform on.
  • 0530PT formation. You take accountability for the data systems section — Cpls report up through you. Report to the platoon sergeant (SSgt). Any Marine missing from formation is your call to the section before you report accountability.
  • 0545-0700Unit PT. You are running the section at the front of the formation on run days, carrying your share on hump days. A section chief who falls out of a hump loses credibility faster than any data integrity failure.
  • 0700-0830Hygiene, chow, change into utilities. Before morning formation: pull the overnight SQL Server job history, confirm GCSS-MC replication completed, review any ACAS scan output from the automated run, check the IAVA calendar for any compliance windows closing this week.
  • 0830Morning formation. Platoon sergeant gives the day's priorities. You confirm the section's task assignments and brief your two Cpls on the day's plan before they brief their teams.
  • 0900-1000Section chief's morning round — walk the server room, check the ACAS console directly, review the overnight event logs for hardware alerts. This is not supervision of junior techs; this is the section chief's direct read of the section's technical health.
  • 1000-1130Administrative and technical work. FitRep Section A drafts for the Cpls in the current rating period. ACAS remediation review — confirm open CAT I findings are working to POA&M timelines. Coordinate with regiment S6 on upcoming exercise server integration if in the 60-day window. ISSM weekly brief preparation.
  • 1130-1300Chow. Sit with the section's NCOs. The mid-day NCO conversation surfaces training plan deconfliction, personnel items needing a section-chief decision, and administrative items queued for the afternoon.
  • 1300-1500Afternoon work block. Monthly Cpl sit-downs — composite score review, Corporals Course timeline, Career Course scheduling for the SSgt board pipeline, specific technical skills to build this quarter. NAVMC 3500.44 collective task training when scheduled. IAVA remediation oversight.
  • 1500-1600Final formation. Give the section tomorrow's plan. Sensitive items count. Server health check final round — event log, GCSS-MC replication job, backup job confirmation — before locking the server room.
  • 1600Liberty call on garrison schedule. Pre-deployment preparation and field operations collapse this.
  • 1700-2000Personal time. Career Course coursework if on the CDET track. Black Belt MCMAP training. Read MCO 1610.7 current revision on Marines.mil — the FitRep system updates and the section chief who knows the current revision writes better Section A narratives.
  • 2000-2200If a Cpl or junior Marine calls with a problem — financial, legal, family, medical — you pick up and route the call. The section chief who answers at 2000 is the section chief whose Marines call at 2000 before the problem becomes a command climate issue.
  • MCCRE / pre-deployment evaluationThe external evaluators grade the section's collective tasks against NAVMC 3500.44 standards. The section chief briefs the evaluator on the data systems support plan before the Cpls execute it. The BUB brief to the S6 on server readiness includes the section's MCCRE lane results before the evaluator's AAR is final. The section that runs a clean MCCRE lane is the section the communications officer mentions by name when the regimental S6 asks which sections are deployment-ready.

Weekly Cadence

The Sgt section chief's week is a split between technical oversight and personnel management that does not stay in its lanes. Monday is the heaviest coordination day — ISSM weekly brief preparation, ACAS remediation status review from the weekend, section training schedule deconfliction with the platoon sergeant, and the administrative items from Friday's formation that carried over. The section chief who is building the ISSM brief on Monday morning is already behind; build the brief data continuously across the week and update it Monday before the brief. Tuesday through Thursday is the execution and development rhythm. The Cpls are running their teams on the week's technical task plan — server patching, Active Directory audits, GCSS-MC monitoring, SharePoint administration. The section chief is running the oversight layer — ACAS console mid-day, IAVA calendar against the server inventory, SQL Server Agent job history at mid-day — and the personnel layer — monthly Cpl sit-downs, FitRep Section A drafts, Career Course slot management. NAVMC 3500.44 collective task training runs as a planned block on the training calendar with a go/no-go standard and an AAR afterward. The week's rhythm changes when the battalion is in the MCCRE evaluation cycle or a pre-deployment preparation window. During those cycles, the technical task plan collapses into mission-specific preparation — data systems support order written and briefed to the Cpls, server kit staged and PCC/PCId, ACAS compliance posture at the inspection-ready threshold before the evaluation date. The section chief who runs the pre-deployment compliance cycle with 30 days of runway handles the evaluation from a position of readiness. The section chief who is remediating CAT I findings the week before is managing a different kind of week.

Key Skills — How to Drill Each

  1. 01
    Translate a battalion communications plan into a data systems support order — server deployment architecture, Active Directory replication plan, GCSS-MC server configuration, SQL Server maintenance windows, ACAS scan schedule, backup retention policy — that the Cpls can execute without a follow-up brief.
    The data systems support order has seven components: server deployment architecture with build procedures per server type, Active Directory replication plan with domain trust and OU structure, GCSS-MC server configuration requirements from the S4 coordination, SQL Server maintenance window schedule aligned with the operations order, ACAS scan schedule with compliance checkpoint before the stand-up is declared complete, backup retention policy with test restore schedule, and the escalation contact tree for failures at each layer. Write the order so that a Cpl who has never stood up this specific configuration can execute it to the communications plan standard without calling you during the operation.
  2. 02
    Manage the ACAS compliance cycle for the section's server and database inventory — vulnerability remediation, CAT I POA&M tracking, STIG baseline documentation — and brief status to the ISSM weekly.
    The weekly ISSM brief has a consistent format: total managed servers, compliant percentage, CAT I open findings with remediation timelines, CAT II findings count with priority order, IAVA compliance status across the inventory, and open policy exceptions with signed risk acceptances. Build the briefing template once and update it continuously. The ISSM should never see a CAT I finding that is past its POA&M deadline — because you escalate the near-miss to the ISSM the week before the deadline, not the week after.
  3. 03
    Administer the battalion's Active Directory domain at the section-chief level — group policy design, privileged account management, OU structure, quarterly access-control audit — and pass the ISSM quarterly review clean.
    The quarterly review preparation starts 30 days before the review date. Run an internal Active Directory audit — pull the full privileged account list, validate every service account against its documented purpose, confirm that no account has permissions beyond its least-privilege requirement, and verify that every group policy object has a documented owner. The ISSM's review should find a domain where every account, every GPO, and every permission is documented, justified, and current. The section chief who hands the ISSM a completed internal audit report two weeks before the external review does not get a follow-up action items list.
  4. 04
    Write FitReps on two to three Cpls per cycle under MCO 1610.7 — observed behavior, action-result-impact, defensible relative value — that the reporting senior can defend at the battalion FitRep review.
    Keep a running observation log on each Cpl — weekly notes on specific behavior with context and result. The Cpl who managed the battalion's Active Directory domain through a regimental MCCRE with zero ISSM findings and produced the quarterly audit report two weeks early gets a Section A that names those specific events. The Cpl who completed routine tasks adequately gets an honest Section A that reflects that. Relative value — the ranking of your Cpls against each other — is the honest assessment of who is the top-tier performer in your section. The reporting senior who receives specific, defensible Section A input from the Sgt calls at the end of the rating period to ask about specific Marines — because the Sgt's Section A actually describes what each one did.
  5. 05
    Coordinate with the regiment or communications battalion S6 for MCEN domain integration, Active Directory trust relationships, and SQL Server licensing for every major exercise or deployment.
    The coordination starts 60 days before the exercise or deployment. The regiment S6 needs the domain integration request submitted with the battalion's Active Directory architecture documented — the trust relationship requirements, the DNS configuration, the site and subnet layout. The ISSM needs the server inventory for ACAS registration pre-coordination. SQL Server licensing and application authorization for GCSS-MC deployment needs to be confirmed through the S6 and the GCSS-MC program office contact 60 days before the deployment, not the week before the servers ship. The section chief who starts these coordination actions at 30 days out is the section chief managing a late-request conversation during final deployment preparation.
  6. 06
    Mentor two Cpls through Sergeants Course prep and the SSgt board pipeline — composite score management, FitRep literacy, section-chief technical depth.
    Monthly sit-down with each Cpl: pull their TFRS composite, compare it to the current 0671 Sgt cutting score, identify the inputs that can move this quarter. Review the Corporals Course slot status. Walk the technical skills they need for section-chief readiness — ACAS triage, Active Directory domain administration, GCSS-MC replication diagnostic — and give supervised execution reps with an AAR after each one. The Sgt who produces two Corporal-to-Sergeant pipelines during his section-chief tour is the Sgt whose FitRep record the SSgt board reads as a developer of Marines.

Manuals & References — What Chapters Matter

  • NAVMC 3500.44 — Communications T&R Manual (section-chief level collective tasks)
    At Sgt your evaluation against the T&R Manual is at the collective task level — what can your section execute as a team. Know the 2000-level section collective tasks for 0671: data systems section stand-up, GCSS-MC replication configuration, Active Directory domain integration, ACAS compliance cycle. The S6 evaluates your section against these collective standards at the MCCRE or pre-deployment evaluation. The section chief who has been training to the collective task standard since the first day in the seat does not need to cram for the evaluation.
  • DISA STIGs — Security Technical Implementation Guides (section-owned POA&M program)
    At Sgt you own the remediation program for the entire section's server inventory. Every open CAT I finding on any server in the section is a signed POA&M with your name on the signature block. Know the STIG frameworks for Windows Server, SQL Server, and the GCSS-MC application platform well enough to read an ACAS finding and identify the remediation step without looking it up — and to teach that process to your Cpls.
  • DoDD 8500.01 — Cybersecurity (ISSM authority and exception-to-policy framework)
    At the section-chief tier you are the ISSM's primary operational contact for the battalion's server environment. The Authorizing Official chain under DoDD 8500.01 — the risk acceptance framework for servers that cannot be hardened to STIG baseline without breaking GCSS-MC functionality — is the framework you operate inside. When GCSS-MC application compatibility requires a STIG deviation, the exception-to-policy process starts with you, goes through the ISSM, and terminates at the Authorizing Official.
  • MCO P2000.11 — Marine Corps COMSEC Policy
    PKI certificates on the server infrastructure, system-level cryptographic material, and COMSEC-capable server components are section-chief responsibilities that overlap with the COMSEC custodian's accountability. The section chief who does not understand the intersection of server administration and COMSEC policy creates a gap the IG finds during the annual COMSEC inspection.
  • MCO 1610.7 — Performance Evaluation System
    You write FitReps now. Read the FitRep policy chapter, the Section A narrative guidance, the attribute marks rubric, and the relative-value mechanics. Verify the current revision on Marines.mil — the system has been updated across recent revisions. The Sgt who understands the relative-value mechanic — and who builds his Section A to support defensible relative-value placement — is the Sgt whose Cpls go to the Sgt board with the strongest FitRep records in the battalion.
  • MCO 1400.32 — Marine Corps Promotion Manual (SSgt board mechanics)
    The SSgt board is a centralized SNCO selection board that reads the full FitRep record — not a cutting-score system. Understand the board mechanics: the FitRep relative-value profile, the PME completion check, the composite score contribution, and the awards stack. The section chief who builds his FitRep profile, composite score, and Career Course timeline simultaneously — starting at the Sgt pin-on, not 18 months before the board — is the section chief who is competitive when the board convenes.

Standards — How to Hit Each

  • Sergeants Course graduate — required and gated.
    Sergeants Course should be complete before or immediately after the Sgt pin-on. If you are reading this as a newly pinned Sgt without Sergeants Course, the slot is the first conversation with the platoon sergeant. The section chief who has not completed required PME is the section chief the platoon sergeant is managing, not developing.
  • Brown Belt MCMAP minimum; Black Belt is what the company gunny notes going to the SSgt board.
    Build the Black Belt timeline within the first six months of the Sgt pin-on. Schedule the mat sessions with the company's senior MCMAP instructor on a fixed schedule so it does not slip when the training calendar fills. Black Belt before the first SSgt board is a visible differentiator in the FitRep record and the composite score — and the section chief who demonstrates self-discipline in MCMAP is the section chief whose Marines follow suit.
  • ACAS compliance for the section's server inventory at or above the ISSM-set threshold for CAT I closure — open Critical findings on your section's servers at inspection time end the conversation fast.
    Build the section's remediation rhythm so that the compliance posture is inspection-ready 30 days before the inspection date. Run an internal ACAS scan 60 days before the scheduled inspection to identify and remediate early. The ISSM who arrives at an inspection and finds zero open CAT I findings on the section's servers is the ISSM who writes the section chief a clean inspection report. The one who arrives and finds open CAT Is is the one who writes the compliance incident.
  • All servers operational or formally deadlined with a documented parts-on-order report delivered to the S6 before the exercise start line.
    The deadline report is due to the S6 before the exercise start line — not the morning of the exercise start line. Build the equipment readiness tracking into the section's weekly maintenance cycle: every server and storage array has a documented status in the maintenance log, and deadlined equipment has a parts-on-order record in the supply system. The section chief who delivers the complete deadline report two weeks before the exercise gives the S6 time to source replacement hardware. The one who delivers it on exercise day gives him no options.
  • Composite score tracked monthly; pull the current MARADMIN cutting score for 0671 to SSgt before asking the section chief where you stand.
    The SSgt board is a FitRep-record review, not a composite-score cut — but the composite score still contributes to the board's overall picture. Track your composite monthly. More importantly, track the FitRep relative-value placement for each rating period — the Sgt who has two consecutive FitRep cycles with 'must select' equivalent narrative and high relative value is the Sgt who is competitive at the SSgt board. Plan Career Course completion 12-18 months before the board.

Technical Mistakes — Concrete Consequences

  • Running a database production cutover without a tested rollback procedure and a defined go/no-go decision point.
    A failed GCSS-MC migration at 0200 with no tested rollback path is a supply chain incident that travels to the MEF G4 before the section chief finishes the first recovery attempt. The go/no-go decision point is defined before the maintenance window opens: if replication is not confirmed healthy within X minutes of the cutover, the rollback procedure executes. The rollback procedure is tested before the maintenance window on a staging system or during an off-peak window. The section chief who defines the go/no-go criteria and tests the rollback produces a maintenance event. The one who does not produces an incident.
  • Allowing the Active Directory privileged account list to go un-audited past the ISSM's quarterly window.
    The ISSM's quarterly audit has a defined scope and a known date. An orphaned Domain Admin account — a service account that was never removed when the system it supported was decommissioned, a test account that a junior tech created and never cleaned up — that appears on the external audit is a CAT I finding with the section chief's name attached. The ISSM's follow-up action items list goes to the S6. 'We forgot' is not a POA&M.
  • Letting a server patch cycle slip past its IAVA compliance window.
    IAVA compliance windows are mandatory and tracked automatically by the HBSS reporting chain. A production server past the IAVA remediation deadline generates an automated non-compliance report that goes to the regiment S6 without requiring any submission from the section chief — because the system submits it. The section chief who receives the regiment S6's call about an IAVA finding rather than proactively briefing it is the section chief who explains the gap rather than the remediation.
  • Verbal change-management approvals for database or Active Directory changes.
    One undocumented schema change that breaks GCSS-MC data integrity has no rollback record and no audit trail. The DBA who 'approved it verbally' owns the restore — and the restore takes longer when the change history is missing. The change-management record is not bureaucracy; it is the rollback procedure and the root-cause analysis starting point when the change breaks something unexpected.
  • Hiding a server outage from the S6 to avoid the conversation.
    The S6 finds out from the S4, who found out from the logistics officer, who found out when the GCSS-MC data stopped posting correctly to the MEF G4 review — and the timeline of who knew what when is the S6's first question. The section chief who reported the outage immediately — status, working diagnosis, restoration timeline — is the one the S6 trusts the next time. The one who reported it late is the one the S6 monitors instead of develops.

Career Decisions at This Rank

  • Career Course in-residence versus distance education — and when to pull the slot relative to the SSgt board?
    Career Course is the PME tier between Sergeants Course and the SNCO Academy — verify the current Marine Corps PME mapping against MCO 1500.59 and the current MARADMIN, as the PME structure has been updated across revisions. In-residence at a regional NCO academy builds the peer network of Sgts from across the Corps and carries a different FitRep narrative weight than CDET. Pull the in-residence slot 12-18 months before the SSgt board date. Career Course completion before the SSgt board is a PME check on the board's review. The section chief who has Career Course locked in 18 months before the board is competitive. The one completing it during the board cycle is managing timing risk.
  • SSgt board versus voluntary separation — stay the course or build the civilian cleared enterprise IT profile now?
    The honest math at Sgt: a Sgt 0671 with a clean FitRep record, an active TS/SCI clearance, Windows Server experience, GCSS-MC operational context, and a Security+ or Microsoft certification is a competitive cleared enterprise IT candidate. DoD civilian roles at DISA, MARFORCYBER, or installation-level IT divisions start at GS-09 to GS-11 for a Sgt with a degree; cleared contractor roles at Booz, Leidos, SAIC, or CACI start at $85K-$115K. The SSgt board opens the platoon-sergeant track — 15-30 Marines, the FitRep cycle, the MEU afloat platoon-sergeant tour — and the eventual GySgt data-systems-chief career arc that produces a cleared contractor profile at $130K-$180K with a significantly deeper operational resume. The decision turns on whether the troop leadership and personnel management work at the senior NCO tier is work you find meaningful or work you find draining.
  • DoD civilian (GS-09 to GS-13 at DISA, MARFORCYBER, or installation IT) versus cleared contractor after EAS?
    Federal civilian at DoD IT organizations — DISA, MARFORCYBER, HQMC C4, installation IT divisions — offers pay stability, federal benefits, and a clearly defined pay scale with veterans' preference at the GS level. GS-09 is the typical entry for a Sgt with a degree and clearance; GS-11 to GS-13 for a senior Sgt or junior SSgt. Cleared contractor at defense IT firms offers higher initial base salary with benefits variability and contract employment risk. The practical difference: federal civilian is slower to hire, better long-term stability, stronger retirement benefits. Cleared contractor is faster to hire, higher initial compensation, tied to contract award cycles. A Sgt with a Sgt FitRep record, TS/SCI clearance, Security+ or Microsoft certification, and GCSS-MC operational experience is competitive in both lanes.
  • Lateral move to MARFORCYBER-associated billet or 0689 Communications Chief designator track versus staying 0671 section chief?
    At Sgt the lateral move window to MARFORCYBER-associated billets or the 0689 Communications Chief designator track is open. The 0689 designator is awarded at senior NCO grades to Marines who have demonstrated breadth across the 06-series community — the path to 0689 runs through section-chief billets in multiple 06xx MOS areas (data systems, network administration, SATCOM) and the communications chief billets that emerge at SSgt and above. MARFORCYBER billets offer a focused cyber career trajectory and a post-service market in the cyber community. Neither is better — they are different careers. The section chief who wants a broader 06-series senior NCO identity should look at the 0689 path. The one who wants a focused data-systems or cyber trajectory should research the MARFORCYBER billet options through the MMPB.

How the Seat Varies by Unit Type

  • Communications company, infantry regiment or division (standard section-chief billet)
    The most common Sgt 0671 section-chief billet — data systems section chief in the communications company supporting a regiment or division. The battalion S6 is the primary customer and the S4's GCSS-MC data is the highest-visibility deliverable. The training cycle is predictable with ITX and field exercise rotations. The section chief who excels in this environment builds the battalion-level data systems credibility that the SSgt board reads.
  • MEU communications element (afloat — section chief on the BLT)
    The section chief on the MEU communications element manages the BLT's server infrastructure on amphibious shipping for six to seven months. GCSS-MC logistics data integrity is directly visible to the BLT supply officer and the MEU G4 in a forward-deployed context. The MEU section chief who returns from an afloat deployment with a clean ACAS record, zero GCSS-MC data integrity incidents, and a MEU-SOC FitRep narrative comes back with the operational record that the SSgt board reads as differentiating.
  • Regimental or MEF communications element (higher-echelon billet)
    The data systems section chief at the regimental or MEF level operates on a larger enterprise server environment with more Active Directory complexity, more SQL Server nodes, more demanding ISSM requirements, and a GCSS-MC architecture that spans multiple echelons. The technical complexity is higher; the command-element visibility is higher; the FitRep narrative is different. A section chief in a MEF-level communications element works alongside SSgts and GySgts in a senior environment that accelerates development differently than a battalion section-chief billet.
  • Supporting establishment (MCAS, MCRD, MCLB IT division)
    Supporting establishment IT division section chiefs manage larger, more stable server environments — more Windows Server nodes, more complex Active Directory architecture, more diverse user base. The technical complexity is genuine at scale. The tradeoff: operational credibility in the FitRep narrative is different from a tactical unit, and the SSgt board reads both. The supporting-establishment section chief who has a MEU or ITX deployment in his record before the billet carries the full picture.

What Good Looks Like at This Rank

The good Sgt 0671 is the section chief the S6 can hand a battalion communications order on Monday and trust that the servers are up, GCSS-MC replication is healthy, the ACAS compliance dashboard is briefable, and every Active Directory account has a documented owner before the regimental BUB on Friday — without a mid-week check-in from the S6. The data systems support order was written and briefed to the Cpls Monday morning. The ISSM weekly brief went out on Tuesday with the section's compliance posture updated to the previous night's ACAS scan. The S4 has not called about logistics data accuracy this week because the GCSS-MC replication job history was clean every morning of the week. His two Cpls are running their teams with the same discipline he runs the section. The Active Directory privileged account audit runs quarterly on a documented schedule — not because the ISSM requested it, but because the Sgt built it into the section's calendar and his Cpls execute it without prompting. The GCSS-MC replication monitoring rhythm runs before the S4's daily review — the section chief knows the replication status before the S4 opens his laptop. That does not happen because the section chief is checking it himself. It happens because the Cpl's team is running the monitoring cycle and escalating failures before the 24-hour window closes. The FitReps his Cpls receive are the FitReps the battalion FitRep board can defend without qualification. Section A for the Cpl who managed the battalion's Active Directory domain through the regimental MCCRE with zero ISSM findings says exactly that — what the Cpl did, in what context, with what result. The reporting senior does not have to ask what 'dedicated NCO' means. The section chief who produces that FitRep record is the section chief the battalion executive officer mentions by name when the topic is which NCOs in the battalion are building Marines.

Preview — The Next Rank

SSgt is the Data Systems Platoon Sergeant rank in the 0671 community — 15 to 30 Marines across multiple sections, the full range of server, database, and enterprise application infrastructure in the battalion or regiment, and the FitRep cycle on three to four Sgts per rating period. The jump from Sgt section chief to SSgt platoon sergeant is not a technical jump — you already have the technical depth. The jump is from one section's accountability to multiple sections' accountability, and from writing FitReps on Cpls to writing them on Sgts. The SSgt-to-GySgt board is FitRep-driven — the centralized SNCO selection board reads the full FitRep record, the PME stack, the awards, the composite score, and the relative-value placement across every rating period. One weak FitRep cycle at the SSgt tier moves the GySgt timeline by years. The SSgt who builds a FitRep record with consistent high relative value — supported by observable behavior and defended by the reporting senior — is the SSgt who is competitive when the board convenes. At SSgt the professional development responsibility expands to the full enlisted leadership layer beneath you. You are mentoring Sgts into SSgt-board-ready candidates the same way the Sgt section chief mentors Cpls into Sgt-board-ready candidates — monthly composite-score reviews, Career Course slot management, honest reads on who is the troop-leadership track and who is the data-systems-SME track the MMPB needs on the MEF G6 staff. The platoon sergeant who produces two competitive SSgt candidates from his Sgt section chiefs during a single duty station is the platoon sergeant the regimental SgtMaj tracks. That is the reputation that travels to the GySgt board.
FAQ

0671 E5 — Frequently Asked Questions

Q01What does a E5 0671 (Data Systems Administrator) actually do?
You run the data systems section — five to fifteen Marines across multiple teams, the full inventory of servers, storage arrays, backup infrastructure, and enterprise applications the battalion operates on the MCEN.
Q02What's the most important thing to know as a E5 0671?
You are the section chief the S6 calls when the GCSS-MC replication fails the night before the MEF logistics review.
Q03What does a typical day look like for a E5 0671?
Time-blocked day at the E5 0671 rank tier: 0500 Wake. Phone check — ACAS alerts, SQL Server Agent job history from overnight, any messages from the S6 or ISSM. Nothing urgent? PT uniform on, 0530 PT formation. You take accountability for the data systems section — Cpls report up through you. Report to the platoon sergeant (SSgt). Any Marine missing from formation is your call to the section before you report accountability, 0545-0700 Unit PT. You are running the section at the front of the formation on run days, carrying your share on hump days.…
Q04What mistakes get E5 0671 soldiers fired or relieved?
Running a database production cutover without a tested rollback procedure and a defined go/no-go decision point. A failed GCSS-MC migration at 0200 with no rollback path is a supply chain incident that travels up the chain before the section chief finishes the first recovery attempt. The rollback procedure is tested before the maintenance window opens — not assembled under pressure at 0300; Allowing the Active Directory privileged account list to go un-audited past the ISSM's quarterly window.…
Q05What career decisions matter most at the E5 0671 rank tier?
Career Course in-residence versus distance education — and when to pull the slot relative to the SSgt board? — Career Course is the PME tier between Sergeants Course and the SNCO Academy — verify the current Marine Corps PME mapping against MCO 1500.59 and the current MARADMIN, as the PME structure has been updated across revisions. In-residence at a regional NCO academy builds the peer network of Sgts from across the Corps and carries a different FitRep narrative weight than CDET. Pull the in-residence slot 12-18 months before the SSgt board date.…
Q06What's next after E5 for a 0671 (Data Systems Administrator) in the Marines?
SSgt is the Data Systems Platoon Sergeant rank in the 0671 community — 15 to 30 Marines across multiple sections, the full range of server, database, and enterprise application infrastructure in the battalion or regiment, and the FitRep cycle on three to four Sgts per rating period.
Q07What manuals and regulations does a E5 0671 need to know cold?
NAVMC 3500.44 — Communications T&R Manual (section-chief level data systems collective tasks; the S6 evaluates your section against this).; DISA STIGs — you own the remediation program for the section's server inventory; every open CAT I finding is a signed POA&M with your name on it.; DoDD 8500.01 — Cybersecurity; the policy framework that defines the ISSM's authority over your server environment and the Authorizing Official chain.

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards