We’re testing with 850 Pros in an HP P2000 G3 MSA. Not officially supported and the controller seems to be CPU bound, but way faster than our 15K SAS spinning disks. We were surprised to see CPU spike on heavy 8K random block reads and slow the disk transfer way down. RAID1 performance was lackluster as well. RAID0 performance was closer to what we expected. We haven’t tried RAID10 because we suspect the CPU will be even more loaded. We may look to eventually upgrade to the MSA 2040 (which supports SSDs), but if we can squeeze a bit more life out of the existing P2000s we have it would be ideal.
Have you actually seen the drives fail gracefully? We’ve considered sacrificing one via writes to see what happens. From: [email protected] [mailto:[email protected]] On Behalf Of Nathan Shelby Sent: Wednesday, October 15, 2014 3:26 PM To: [email protected] Subject: Re: [NTSysADM] Server SSDs Yes indeed. We've been very happy with the Samsung 840 PRO/DC and Intel DC S3500/S3700 series drives. I wouldn't put anything else in a server that uses a consumer / commonly available drive. There are multiple vendors that produce enterprise quality drives and you'll pay for it. We're standing up a new DB server running on Dell's new R730xd platform that will have two PERC H730Ps each with 6x1TB Samsung 850PRO in RAID 10 and available hot spares. We're expecting consistent IOPS >30,000 and those new controllers support passing TRIM commands to SSD which should keep the performance on par with new. Be very aware of what controllers will or will not pass TRIM or other garbage collection to SSDs. Older controllers do not support this and it's still spotty on some of the more recent ones. The Samsung Pro/DC and Intel DC series drives fail in a graceful state that most other consumer drives don't when the flash on these drives reaches usable life they lock in to a read only mode. Provided you don't experience outright controller failure it's a very handy feature to have. Samsung and Intel both produce drives that use different types of flash memory to fit different needs, you should take a look at what your read/write ratios will be and how you plan on utilizing the drives and see what fits for your use case. Nathan Shelby Lead Systems Engineer – Quote Wizard<https://quotewizard.com/> [email protected]<mailto:[email protected]> / 206-753-2626 Malo Periculosam Libertatem Quam Quietum Servitium On Wed, Oct 15, 2014 at 1:02 PM, Richard Stovall <[email protected]<mailto:[email protected]>> wrote: Are any of you replacing existing spinning drives with SSDs on your servers? If so, which SSDs are you choosing? Are you running RAID for safety? Thanks, Richard
