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NS_I_DISK_REBUILD_FINISHED
NS_I_DISK_REBUILD_FINISHED — 0x400D0057
This result belongs to completed content disk rebuild not to a generic restart checklist, because the server reached the end of its rebuild workflow for the identified disk.
What the status actually records
Rebuild events form a stateful sequence with one owner, an initial disk condition, reconstruction sources, progress, and a terminal result. In the context of completed content disk rebuild, preserve the entire sequence and the pre-rebuild identity data; repeated starts can destroy the evidence that distinguishes source loss from destination failure. Locate the first component that changes state and distinguish later summary errors.
Important distinction. A completion event confirms workflow termination, not automatically the semantic correctness of every reconstructed media object.
Evidence before intervention
- Matching rebuild-start event and elapsed time
- Final disk state, control-block identifiers, stripe membership, and content count
- I/O, checksum, or media errors recorded during the operation
- Post-rebuild reads of content that previously depended on missing or reconstructed regions
Preserve the smallest reproducible evidence set and redact client content, credentials, and private network details before sharing it.
A controlled diagnostic path
- Read several representative objects through the normal streaming path.
- Restart the Content Server and verify that the disk reopens without another rebuild. Keep media bytes, server identity, and unrelated publishing-point settings fixed.
- Compare the rebuilt inventory with the authoritative catalog or peer inventory. Use a disposable publishing point or maintenance window when the test can alter server or storage state.
Do not use repeated reconnects as the main test; a later success can belong to a new session, publishing-point generation, server owner, completed background operation, or different media path.
How to distinguish nearby outcomes
Also check severity: informational and warning values are observations or policy notifications and should be routed differently from a failure HRESULT even when an event viewer labels the source generically.
Correction and acceptance criteria
Correction: If validation fails, preserve the rebuilt volume and investigate source data or metadata consistency instead of immediately rebuilding again.
Accept the repair only when the disk reopens cleanly, inventory agrees with peers, representative content streams correctly, and no repair event recurs.
Technical references
Use these Microsoft references for the formal contract and combine them with the exact server or catalog evidence from the incident: Check version-specific behavior against the Windows Media Services and SDK generation that produced the event.
- Microsoft Open Specifications: HRESULT values — defines the formal status.
- Microsoft: Windows Media Services 9 Series SDK — documents the relevant API or lifecycle.
- Microsoft: Windows Media Services SDK architecture — provides the architecture, format, or protocol context.
- Microsoft: programming the Windows Media server object model — supports the controlled verification criteria.
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