What does HRESULT 0x400D0193 (NS_I_RESTRIPE_START) mean?

NS_I_RESTRIPE_START

NS_I_RESTRIPE_START — 0x400D0193

The built-in message is only the immediate status; the useful boundary is that the server began redistributing content or stripe ownership across the legacy storage topology.

Operational meaning

Restriping redistributes media-server placement and ownership across disks or Content Servers. In the context of content restripe start, it is a coordinated topology operation rather than a generic filesystem optimization, so pre/post stripe maps, peer identity, capacity, and representative media reads are the relevant evidence. Locate the first component changing state in content restripe start and distinguish later summary errors.

Important distinction. Restriping is a topology change, not a generic filesystem defragmentation, and its completion must be validated at the media-server metadata layer.

Facts worth preserving

• Operation ID, participating servers and disks, source/destination capacity, and start time
• Current stripe map, excluded or failed disks, and content inventory baseline
• Concurrent rebuild, stop, or cluster-link events
• I/O throughput and remaining capacity throughout the operation

Prefer identifiers, versions, counts, hashes, state transitions, and redacted paths; media content, credentials, keys, and user data are rarely needed in routine incident logs.

Reproduce the condition safely

1. Run a small restripe with a fixed content set and compare stripe maps before and after. Keep media bytes, server identity, and unrelated publishing-point settings fixed.
2. Verify no rebuild or administrative stop owns the same disks. Use a disposable publishing point or maintenance window when the test can alter server or storage state.
3. Simulate capacity pressure in a lab to confirm the operation stops safely. Retain a known-good stream, session, or server object so a broad restart is not mistaken for repair of the reported failure.

Stop after the first comparison that changes the result and diagnose the replacement status independently instead of accumulating unrelated server changes.

What not to infer

• Known-good comparison succeeds: isolate the production object or configuration associated with the failing operation.
• Same failure on the control: investigate the shared server, plug-in, storage, topology, or network layer before changing media content.
• Different status after one change: preserve both results; the first rejected condition was removed, but the operation is not yet proved complete.

Closing the incident

Correction: Remove capacity, link, or ownership conflicts and allow one coordinated restripe operation to control the participating disks.

Accept the repair only when the operation reaches done, stripe maps and inventories agree, and representative content remains readable during and after redistribution.

Technical references

• 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.