Storage Spaces Tiering Performance Problem

Rob Cowlthorp 20 Reputation points
2024-12-21T00:09:17.6266667+00:00

I'm seeing very poor performance from Tiered Storage Spaces, hoping someone can help idendity what I am doing wrong.

  • I have 2x256GB SSDs and 2x2TB HDDs.
  • Individual drives perform as expected
  • My previous experience is that a two drive tiered storage space performs nearly as well as the SSD used in the tier
  • I am able to create tiered storage spaces with two or four drives.
  • Performance for two drive and four drive configurations is slightly better than the HDD performance and far from the SSD performance
  • I'm using DISKSPD.EXE to measure performance

The relevant informantion is listed below, let me know if there is anything other information that may be helpful. Thanks for taking a look.

-Rob


Performance Summary

Media MiBS IOPS
HDD 1.2 154
SSD 172 22,000
Tiered 3.1 408

Storage MediaStorage Media

Performance of Individual DrivesUser's image

Create Two Drive Pool and Storage Tiers

User's image

Create Virtual Disk and VolumeUser's image

Performance of Two Drive Storage SpaceUser's image

Windows for business Windows Client for IT Pros Storage high availability Virtualization and Hyper-V
Windows for business Windows Server User experience Other
Windows for business Windows Server Storage high availability Other
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  1. Anonymous
    2024-12-24T07:44:03.4266667+00:00

    Hi Rob,

    Thanks for your post. To troubleshoot low performance in Storage Spaces Tiering, you can:

    1. Run Storage Tiers Optimization on demand to optimize storage tiers outside the usual schedule

    https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn789160(v=ws.11)

    1. If a reboot occurs on a node during maintenance, remove the affected virtual disks from CSV to put them in the available storage group in the cluster

    Best Regards,

    Ian Xue


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