drdread
  • drdread
  • 100% (Exalted)
  • Advanced Member Topic Starter
7 days ago
What does this mean - seeing on all drives:

Log Name: Application
Source: Microsoft-Windows-Defrag
Date: 24/03/2025 03:20:54
Event ID: 257
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: TEDDC1.TED.local
Description:
The volume (C:) was not optimized because an error was encountered: Neither Slab Consolidation nor Slab Analysis will run if slabs are less than 8 MB. (0x8900002D)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Defrag" />
    <EventID Qualifiers="32768">257</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2025-03-24T03:20:54.000000000Z" />
    <EventRecordID>1200508</EventRecordID>
    <Channel>Application</Channel>
    <Computer>TEDDC1.TED.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>(C:)</Data>
    <Data>Neither Slab Consolidation nor Slab Analysis will run if slabs are less than 8 MB. (0x8900002D)</Data>
    <Binary>2D0000896303000094010000AE0100002236B942D9B1BD381B0700000000000000000000</Binary>
  </EventData>
</Event>
Sponsor

Want to thank us? Use: Patreon or PayPal or Bitcoins: bc1q4whppe29dw77rm4kv4pln0gqae4yjnxly0dny0hky6yhnafukzjsyrsqhk

All opinions expressed within these pages are sent in by members of the public or by our staff in their spare time, and as such do not represent any opinion held by sircles.net Ltd or their partners.

sirclesadmin
7 days ago

That message:



"The volume Folders and Data (F:) was not optimized because an error was encountered: Neither Slab Consolidation nor Slab Analysis will run if slabs are less than 8 MB. (0x8900002D)"



is coming from Windows' defragmentation/optimization tool, and it's telling you something specific and mostly harmless.


🔍 What it actually means:



  • "Slabs" refer to data segments in thinly provisioned volumes or Storage Spaces—they're virtual disk segments that Windows uses to manage disk usage.

  • The error 0x8900002D means that the defragmentation (optimization) process was skipped because the individual "slabs" of data are smaller than 8 MB.

  • Windows’ optimizer requires slabs to be at least 8 MB to perform consolidation or analysis.

  • So basically: nothing is wrong, it just couldn't do anything useful on that volume, probably because it's either nearly empty, or it’s not a traditional HDD, or it’s a virtual/dynamic disk that doesn't need traditional defrag-style optimization.



đź’ˇ In Plain Terms:



“I tried to optimize this drive, but I couldn’t do anything because all the little data chunks are already small — too small to optimize.”




đź›  What You Should Do:



  • No action needed, unless you’re experiencing performance issues (which is unlikely due to this).

  • If you're optimizing SSDs, know that traditional defragmentation is not necessary, and Windows already does "trim" operations for SSDs automatically.

  • If this is a network drive, virtual disk, external USB, or a thin-provisioned Storage Space, this message is normal and nothing to worry about.



🧠 Future Considerations:



  • If you’re scripting or automating optimization tasks and seeing these logs/errors, you might want to filter out or ignore 0x8900002D in your logs—it’s an informative code, not a warning or critical error.


Want help checking if your disk type or setup makes this expected? Or want a script to skip drives that can't be optimized?


IT Support Berkshire 
Buy new and refurbished computer equipment 
Similar Topics
Users browsing this topic