TODO: Synology SSD Cache Issues

Synology SSD Cache Issues

Synology SSD Cache have two issues as below

  • Unable to use one disk/array to support mulitiple volume.

    • No answer from Internet and some people mentioned that it is a new request.
    • Possible solution is to create partition/volume on SSD Storage Pool, then use volume as cache device.
    • Synology uses LVM cache, haven't checked whether native linux can do or not.
  • Utilization of cache is very low, about 5GB on fequently used volume, such as volume1.

    • Improved in DSM 7 which supports Pin all Btrfs metadata option. But haven't validated the utilization.

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