TBS-h574TX specification help

[Jabes]

I am thinking about getting a TBS-h574TX for the purpose of sharing the VM disks for my two-node proxmox setup. Currently my virtual disks are on a SATA SSD in a synology nas, served over NFS. This is working well but I only have a single drive dedicated to this fast storage so there is no resilience.

The connection from the hypervisors is over a 10gb link.

8TB of storage with some raid protection will be plenty.

I was thinking of going for 3x 4TB SSD rather than 5 x 2TB as this should allow me to expand later?

In terms of NVME modules, my wholesaler has WD SN700 (WDS400T1R0C) and Samsung 900 Pro (MZ-V9P4T0BW) - both these seem to be on the compatibility list but would one be better than the other? I think the SN700 has a better lifetime, but it is a double-sided module, so it might be hotter.

Any tips/tricks or things I should be thinking about before purchasing? This would be my first QNAP, but given it's an NFS share, I don't imagine the differences I encounter from what I'm used to would prove significant

[Bob Zelin]

Hi -

I do not know Proxmox, so I am ignorant of exactly what your requirements will actually be, but I do know the TBS-h574TX quite well, and have installed a lot of these. These days, even though they are not on the compatibiity list, I use Samsung EVO 990 4TB drives with built in heat sinks. Regular M.2 drives get very hot, and the first one I ever built that had Western Digital SN700's blew up (the drives reached 75 degrees Celsius, and 3 of the 5 failed at that time). At that time, when the drives were replaced, I used Glotrends full legnth heat sinks that you can get on Amazon, but since that time, and today, I use the Samsung EVO 990 drives -

https://www.bhphotovideo.com/c/product/ ... _pcie.html

I was nervous that they would be too tall to fit into the TBS-h574TX, but they fit perfectly, and the drive temperatures don't exced 55 degrees celsius, so they are safe.

A 4 TB NVMe drive is really 3.64 TB, and when you create a RAID, you must do overprovisioning, or the M.2 drives will fail quickly. With five 4TB drives, in RAID 5, and 10% over provisioning, you get 13.3 TB of usable storage. It's REALLY FAST (1100 MB/sec on a 10G network) - and of course QNAP supports both SMB and NFS.

It's a great product - I advise you to just "bite the bullet" and get all the drives.

Bob Zelin

Hi Jabes - you can post the same thing in multiple places - so can I !
bob