Upgrading my QNAP PCIE cache

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1

Hi Everyone,

My system configuration is below

In short, I am considering swapping my dual nvme pcie cache for the quad pcie cache.

I thinking of removing both the dual pcie card and the 10GbE networking card (which I don’t use) so that I can install:

QNAP QM2-4P-384 in Slot 1 with 4 x Samsung 990 PRO 4TB SSDs as a read only RAID cache

My concern is about thermal issues and just generally if you all think this is good/bad idea. I use my qnap primarily as a plex media server

Configuration:

  • Model: QNAP TVS-h1688X-W1250-32G running QTS
  • CPU: Intel® Xeon® W-1250 (6-core, 12-thread)
  • RAM: 32GB DDR4
  • Network: 2 x 10GbE RJ45 ports via factory-installed QXG-10G2T card in PCIe Slot 1
    Expansion Card: QNAP QM2-2P-244A in PCIe Slot 3
    • Drives: 2 x Samsung 970 EVO Plus 2TB NVMe SSDs
    • Configured As: Read-only RAID cache (RAID 1)
    • Purpose: Boosts read performance for frequently accessed data, especially Plex metadata

System Volumes & Storage Pools

SSD Volume (System)

  • Pool Name: SSD Volume (System)

  • Drives: 2 x Samsung 980 Pro 2TB NVMe SSDs

  • RAID Type: RAID 1

  • Volume Type: Thick Volume

  • Capacity: 1.53TB total (1.31TB free)

  • Purpose:

    • QTS operating system
    • Plex application binaries
    • Plex metadata and system files (prior to migration)

Libraries

  • Pool Name: Libraries

  • Drives: 11 x Seagate ST16000NM000J-2TW103 16TB HDDs

    • 10 active in RAID 6 (2-disk fault tolerance)
    • 1 hot spare

  • RAID Type: RAID 6

  • Volume Type: Thick Volume

  • Capacity: 107.16TB total (70.16TB used, ~65%)

  • Purpose:

    • All Plex media files (TV, Movies, Music, Photos)

SSD_Plex_Vol

  • Pool Name: SSD_Plex_Vol

  • Drives: 4 x Samsung 870 EVO 4TB SATA SSDs

  • RAID Type: RAID 10

  • Volume Type: Thick Volume

  • Capacity: 3.97TB

  • Allocated for Overprovisioning: 743.31GB

  • Guaranteed Snapshot Space: 15% (1003.46GB)

  • Purpose:

    • Current location of all Plex metadata and application data
    • Migrated via QTS “Migrate” tool

  • Snapshot Schedule:

    • Daily at 3:00 AM using Smart Versioning:

      • 1 hourly, 7 daily, 4 weekly, 12 monthly

  • Snapshot Replica:

    • Daily backup to Libraries volume at 5:00 AM
    • Keeps up to 30 replicas

  • Alert Threshold: 80% pool usage

Thank you all

2

Apparently cache does not really work in QTS but does in QuTS. Sell 10gb card?

3

I’ve been using the read only cache on the dual card with QTS. works just fine. Just thinking of upgrading

4

It might work in read only. We tried read-write, it was way slower than no cache.

5

Ok, sorry it didn’t work for you. It does help as read only.

My question though…

Will the quad card in slot 1 with Samsung 990 pros in raid cause thermal issues?