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IT case study 10 / Windows infrastructure · change management · security

Less legacy.
More control.

Modernizing an existing workplace environment means more than disconnecting old equipment. I identified and removed the remaining dependencies on three legacy virtual machines, independently validated DHCP migration, redirected a rarely used Xerox scan-to-folder workflow, and retired the virtual server environment. I also configured removal of an obsolete drive mapping and rolled out missing workstation security patches.

Windows ServerVirtual machinesDHCPGroup PolicySecurity patching
3 / 3

Legacy VMs retired

Two VMs shut down first. The last was retired after the Xerox scanning dependency was redirected.

Z:

Obsolete drive mapping

Group Policy configured to remove a retired mapped drive from workstations.

Oct 16

Security patch rollout

Missing security patches rolled out across active workstations; compliance totals not provided.

01 / Why this mattered

Retiring infrastructure
without losing continuity.

Older virtual machines can remain tied to obscure workflows long after their main purpose has changed. In this environment, retiring the servers required both network-service work and a review of a rarely used Xerox multifunction-printer scanning workflow. The business had largely moved away from paper, but the printer still uploaded occasional bulk scans of service slips to the Content Control VM.

In parallel, I worked on workstation security maintenance so older or unpatched devices would not remain an unmanaged part of the operating environment.

02 / Infrastructure transition

Understand the dependency.
Then remove it.

A conceptual overview of the documented completed transition; not a representation of the real network layout, IP addressing or server configuration.

EXISTING ENVIRONMENT / OCT 7
Legacy VM 01Legacy VM 02Legacy VM 03

Three virtual machines running at the start of the cleanup effort, with legacy service and workstation dependencies under review.

COMPLETED TRANSITION
  1. Review and independently validate DHCP migration
  2. Power down two of the three legacy VMs
  3. Identify Xerox bulk scanning still targeting the Content Control VM
  4. Redirect future bulk scans to a folder on the main shared drive
  5. Retire the remaining legacy VM; separately remove obsolete Z: mapping
Verified outcome as reported: DHCP migration was independently validated, two VMs were definitively powered down, and the third was retired after the Xerox scan destination was moved to the main shared drive. No raw DHCP test logs, per-VM shutdown dates or follow-up scan-test measurements are published.
03 / Technical workstreams

One environment.
Several dependencies.

01 / LEGACY SERVICESRetired

Three-VM retirement

Worked to remove remaining dependencies on an older virtual-server environment. Two of the three VMs were definitively powered down. The third remained in use for an occasional Xerox scanning workflow until that dependency was redirected to a shared-drive folder; the last VM was then retired.

Confirmed outcome: All three legacy virtual machines were retired in a staged process. The exact retirement dates and shutdown verification artifacts have not been published.

02 / NETWORK SERVICESValidated

DHCP migration and verification

Reviewed and adjusted DHCP settings associated with the old virtual-server environment, disabled the legacy VM-hosted DHCP service as part of the transition, and independently validated the DHCP migration.

Confirmed outcome: DHCP migration was independently validated before the legacy environment was fully retired. The underlying scope details, new DHCP host configuration and validation logs remain outside this public portfolio.

03 / DOMAIN POLICYConfigured

Remove an obsolete Z: drive

Set Group Policy to delete an outdated Z: drive mapping from managed systems, replacing individual manual cleanup with a centralized workstation configuration change.

Supported conclusion: The removal policy was configured. Device-by-device application counts and verification results are not claimed.

04 / PRINT & DOCUMENT WORKFLOWSRedirected

Xerox bulk-scan destination migration

Discovered that a Xerox multifunction printer still sent bulk scans of service slips to the Content Control VM. Although the company had moved mostly to paperless workflows, this occasional process still depended on the remaining server. Reconfigured the scan destination to a folder on the main shared drive.

Confirmed outcome: The legacy scan-to-VM destination was replaced with a shared-drive folder, removing the dependency that had kept the third VM in service. No scan-count or performance improvement is claimed.

05 / ENDPOINT SECURITYRolled out / Oct 16

Security patch remediation

Rolled out missing security patches across active workstations on October 16, building on established endpoint-management responsibilities and previously deployed patch-management tooling.

Supported conclusion: A patch rollout was performed. The source information does not establish a 100% patch-compliance rate, a precise device count, or success on every endpoint.

04 / Validation and release discipline

Safeguard the handoff.
Verify before declaring done.

The core retirement outcome is confirmed. The cards below distinguish actions and validation reported as complete from supporting tests or audit records that could strengthen the portfolio later.

01Legacy services retired

Three virtual machines removed from service in stages; two shut down first, then the Content Control VM after scan redirection.

02DHCP migration validated

Independent validation confirmed by the project owner; test methodology and network details remain private.

03Scan destination redirected

Xerox bulk scans now target a main-share folder rather than the retired Content Control VM.

04Group Policy configured

Centralized Z: drive removal configured; per-workstation application results are not published.

05Patch audit remains separate

Missing patches rolled out October 16; per-device installation and compliance reporting are not yet available for this case study.

05 / Skills demonstrated

Maintenance is
an infrastructure skill.

The project illustrates the technical and operational work required to retire inherited infrastructure safely: discover residual dependencies, validate replacement network services, preserve an infrequent document workflow, update domain policy, and deploy workstation security patches.

Legacy server decommissioningDHCP migration validationXerox MFP scan-to-folderFile-share migrationActive Directory / GPOWindows endpointsSecurity patch rolloutChange validation
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