@Pete-S said in Dell PERC H740 with SSDs?:
Only go with HDDs when you don't have any other choice. SSDs will be much faster. A single SSD has IOPs in the several tens of thousands range while a HDD can only do a couple of hundred.
The ultra low end .1DWPD drives can have terrible sustained write latency. I'm not convinced spinning drives might win in this category.
Read intensive SATA SSDs are getting close to the same price as 10K SAS. If you want to save money don't buy SAS SSDs, because you don't need them.
The cheap ones fall over once you exceed the limited SLC or DRAM buffer. Beware using these for large DB copy jobs etc.
If you want to save even more money don't buy drives from Dell
This is... problematic. I've seen a server OEM run into an issue between their HBA/RAID controller nad a given drive, and get the firmware patch only released for their make/model of the drives, and not the general-purpose regular ones. Also, good luck getting the out of band to properly provide SMART. Also unless you are buying something that someone validated, good luck with HotAdd support, or having to use one-off solutions like Intel VMD when doing a pass through drives.
For SSDs look for Samsung and Intel enterprise drives
Going to point out that Intel shares fabs with Micron.
Samsung PM883 or Intel S4510 in your case
Ehhh, be careful here. The PM8xx is the bargain basement cheap Samsung SATA devices. Samsung in the earlier versions of this series had some... interesting firmware bugs so make sure you patch your drives.
The Intel 4510 with newer firmware should work around the previous performance problems on the last generation of these (The S37xx was a nightmare on low QD writes), but again, this isn't the fast drive. This is the cheaper one. You normally have something act as a write buffer to shield these drives from aggressive writes.