Re: Do not use SSDs with (small) SLC cache

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Michael Wodniok (wodniok) writes:
> Hi all,
> digging around debugging, why our (small: 10 Hosts/~60 OSDs) cluster is so slow even while recovering I found out one of our key issues are some SSDs with SLC cache (in our case Samsung SSD 870 EVO) - which we just recycled from other use cases in the hope to speed up our mainly hdd based cluster. We know it's a little bit random which objects get accelerated when not used as cache.

	Somewhat off-topic, but... may I recommend *not* using the 870s ?

	There is an issue with 870s failing around 14-17 TB written if they're
	not running the latest firmware... I recently pulled 25 of them out of
	our storage because of this.

ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx

[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]

  Powered by Linux