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PCIE m.2 / nvme advantage

Hard disks, HDD, RAID Hardware, disk controllers, SATA, PATA, SCSI, IDE, On Board, USB, Firewire, CF (Compact Flash)
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peksi
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PCIE m.2 / nvme advantage

#1

Post by peksi » 10 Nov 2019 18:34

I have QNAP TS-463U-RP NAS which has quite an aged filesystem and I need to move my iSCSI LUNs to another device while I renew the QNAP. Now while at it I will give Xigmanas a shot if it could replace my QNAP all in all. If it works better I am happy, if not I will take it as a learning experience.

I have ended up with a Supermicro server with dual Xeons, 24G RAM, 10 gig Mellanox ethernet and 6 x 2T 7200rpm sata3 HDs. I would like to make Xigmanas perform well with my KVM / Docker VMs / containers which use Xigmanas iSCSI LUNs as their OS and data drives. I was considering of adding 1-2T NVME / PCIe m.2 storage to it but I did not find any user opinions on how much will that will increase performance with virtual guests.

Can you tell me any estimates on how much will I gain performance by using NVME SSDs as cache or part of volume? Which way would be the best way to utilize 2 x 1 TB NVME SSD? Or would it give me better performance to invest in multiple hard drives, say 4-6 more of them?

All opinions appreciated. Thanks in advance.

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