Hi Sinan,
Just to reiterate: don't do this. Consumer SSDs will destroy your
enterprise SSD's performance.
Our office cluster is made of consumer-grade servers: cheap gaming
motherboards, memory, ryzen processors, desktop HDDs. But SSD drives are
Enterprise, we had awful experiences with consumer SSDs (some perform
worse that HDDs with Ceph).
Cheers
Eneko
El 19/12/19 a las 20:20, Sinan Polat escribió:
Hi all,
Thanks for the replies. I am not worried about their lifetime. We will be adding only 1 SSD disk per physical server. All SSD’s are enterprise drives. If the added consumer grade disk will fail, no problem.
I am more curious regarding their I/O performance. I do want to have 50% drop in performance.
So anyone any experience with 860 EVO or Crucial MX500 in a Ceph setup?
Thanks!
Op 19 dec. 2019 om 19:18 heeft Mark Nelson <mnelson@xxxxxxxxxx> het volgende geschreven:
The way I try to look at this is:
1) How much more do the enterprise grade drives cost?
2) What are the benefits? (Faster performance, longer life, etc)
3) How much does it cost to deal with downtime, diagnose issues, and replace malfunctioning hardware?
My personal take is that enterprise drives are usually worth it. There may be consumer grade drives that may be worth considering in very specific scenarios if they still have power loss protection and high write durability. Even when I was in academia years ago with very limited budgets, we got burned with consumer grade SSDs to the point where we had to replace them all. You have to be very careful and know exactly what you are buying.
Mark
On 12/19/19 12:04 PM, jesper@xxxxxxxx wrote:
I dont think “usually” is good enough in a production setup.
Sent from myMail for iOS
Thursday, 19 December 2019, 12.09 +0100 from Виталий Филиппов <vitalif@xxxxxxxxxx>:
Usually it doesn't, it only harms performance and probably SSD
lifetime
too
> I would not be running ceph on ssds without powerloss protection. I
> delivers a potential data loss scenario
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