I’m looking into making an all ssd pool on my freenas server, to improve responsiveness to small file access.
My current raidz2 10x4 TB HDD pool is filling up, reducing performance. So I wan’t to move pictures, documents, music and other small files types I often access to all ssd.
At the moment I have 2 sata ports left, so I’m thinking a mirrored vdev of 2x2 TB ssds.
I won’t be able to use the full bandwidth they offer, since my network is 1gig, and I can’t add a 10gig nic, since I had a brainfart when I built it, and chose mini-itx… The pci-e slot is occupied by a hba card.
(I do plan to build a new one within the next 6 months, when Truenas 12 is released and the new Supermicro H12 Epyc motherboards are released. With 10 gig networking and all that good stuff )
But I’m not sure which ssd to chose for an all ssd pool.
I’ve been googling and going trough old posts here, on Reddit, ix systems forums and on servethehome, but the only time they talk ssd is for l2arc recommendations.
And the threads I’ve found on all ssd are 2-6 years old, so nothing recent.
It’s not gonna get hammered with frequent rewrites of data. Ones it’s on there it’s pretty much static. Files only get added over time, not changed much after it’s been added.
I’ve been looking at the following ssds:
Model name - Price - Write Endurance - warranty
- Kingston SSDNow A400 - 193 Euros - 600 TBW - 3 years
- Crucial MX500 - 228 Euros - 700 TBW - 5 years
- Samsung 870 QVO - 282 Euros - 720 TBW - 3 years
- Crucial Micron 5210 ION - 298 Euros - Unknown TBW - 5 years
- WD Red SA500 - 300 Euros - 1300 TBW - 5 years
- Seagate Barracuda 120 - 301 Euros - 1170 TBW - 5 years
- Samsung 860 EVO - 313 Euros - 1200 TBW - 5 years
- Kingston Data Centre DC450R - 326 Euros - 1301 TBW - 5 years
The Kingston A400 & Samsung 870 Qvo only has 3 year warranty, the rest is 5 years.
The Micron 5210 ION and Kingston DC450R are enterprise SSD’s, so they shoulde hand being in an array pretty well, their write iops are lower than the consumer ssds. But still better way than HDDs. My guess is they don’t have all that turbo/slc caching the consumer ssds have. Probably to make the performance more predictable.
The Samsung 870 QVO and Micron 5210 ION are both QLC nand, but since I’m not hammering my nas with constant rewrites or runiing vm’s from it, I don’t think it’s an issue.
The price difference from cheapest to most expensive is over a 100 Euros, and the endurance is double.
From the reviews I’ve been reading about the WD RED SA 500, it’s basically a WD Blue SSD with tweaked firmware, but the 2 TB blue has an endurance is 500 TBW, and I don’t quite get how the doubled the endurance with a different firmware?
I haven’t included any SSD’s I cant afford, but I’m not looking to spend more money than necessary if it doesn’t benefit my use case. It’s not write intensive, so I don’t think the +1000 TBW of the more expensive ones will make a difference for me.
Input is welcome :