Could you please recommend extention card to be able to use SSD caching for Qnap TS-453Be ? I’m in process of purchasing the NAS and I expect that I’ll installing 4 HDDs and potentionaly some M.2 SSD using extension card to improve the speed by SSD caching. I was looking at https://nascompares.com/2018/03/18/brand-new-cards-qnap-qm2-range-qm2-4p-384a-qm2-4p-342-qm2-2p-384-qm2-2p-344 and doing some math without knowing much details about the SSD caching technology. HDD has maximum transfer speed is 180 MB/s, four HDDs reading in parallel 4×180 = 720MB/s = 5760 Mb/s. On network side I’ll be limited by 2x 1Gb/s (in future potenionally 1x 10Gb/s). I see the difference between compatible cards in PCIe Gen 2 vs Gen 3 and number of lines used starting with QM2-2S-220A being PCIe Gen2 x2 card up to QM2-2P-384 being PCIe Gen3 x8 card. Already PCIe Gen2 x2 has transfer rate of 10Gb/s therefore I see no added value to go for more powerfull and more expensive card with higher troughput. Of course newer card may potentionaly have some new technology that can be used by NAS SW.
Yes. TS-453be comes with 1 PCIe 2.0 x2 slot. It is compatible with faster cards, but the speed will be still limited to 2x. Choosing QM2-2S-220A will make a lot of sense. Max speed for PCIe gen2 x2 is around 1000MB/s, so dual SSD in RAID0/1 would be a sufficient boost to your system.
| PCIe gen2 x4 Card, 2x SATA 6Gb/s M.2 SSD slots + 1x 10GbE RJ45 M.2 SSD PCI-Express Card | +£191.00 | |
| PCIe gen3 x8 Card, 2x NVMe gen3 x4 M.2 SSD slots M.2 SSD PCI-Express Card | +£154.00 | |
| PCIe gen3 x4 Card, 2x NVMe gen3 x4 M.2 SSD slots M.2 SSD PCI-Express Card | +£146.00 | |
| PCIe gen2 x4 Card, 2x NVMe gen2 x4 M.2 SSD slots M.2 SSD PCI-Express Card | +£99.00 | |
| PCIe gen2 x2 Card, 2x SATA 6Gb/s M.2 SSD slots M.2 SSD PCI-Express Card | +£74.00 | |
| PCIe gen2 x4 Card, 2x SATA 6Gb/s M.2 SSD slots + 1x 10GbE RJ45 M.2 SSD PCI-Express Card | +£185.00 | |
| PCIe gen2 x4 Card, 2x NVMe M.2 SSD slots + 1x 10GbE RJ45 M.2 SSD PCI-Express Card | +£178.00 |
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