On 02/12/2017 08:34 AM, Konstantin Olchanski wrote: > On Sat, Feb 11, 2017 at 10:07:01PM -0800, ToddAndMargo wrote: >> Any of your guys use M.2 drives? >> Any trouble getting SL7 to boot off them? >> > Yes, we use Kingston (Toshiba) 120GB M.2 SATA SSDs as boot disks. On older machines > we use Kingston SV300 plain SATA SSDs. > > No special problems to report. 0 failures. SMART attributes make sense. > > (Generally, Kingston (Toshiba) SSDs have good reliability, > out of two pagesful of SSDs, in almost 5 years only 2 failures, > the very first SSD (SV100) bricked by firmware update, one SV300 turned > into a space heater (if powered, heats to more than 50 degC, does not work, > internal short in the controller chip. by luck no flames, no fire). > >> Do you use them in RAID One at all? >> > Yes, we have many pairs of SVP200 and SV300 SSDs in RAID1 (linux mdadm). > One pair is ZFS RAID1. > > Why asking? Do you expect linux mdadm raid1 malfunction on SSDs? Hi Konstantin, I am asking as several motherboards I have looked at only have one M.2 slot and raid would need two. I may be misunderstanding here, but I think that if you need two drives, you need a PCIe carrier to put them into instead of the M.2 slot. Maybe I misunderstand for the M.2 slot works. > >> Do you have a favorite PCIe 16x carrier? >> > Socket M.2 M-key is PCIe x4 (or SATA). So this is 4x M.2 carrier? I got some free > M.2 carriers (dual M.2, I think) with some ASUS motherboards. > > But I cannot use them, as we only have SATA SSDs due to excessive cost of PCIe SSDs. > > Our typical machine configuration is 120GB SSD for system partition, pair > of 6 or 8TB HDDs for home and data storage (mdadm raid1). A nightly cron job > to rsync backup the SSD contents. (still worried about SSDs bricking themselves). > > Thank you! -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Computers are like air conditioners. They malfunction when you open windows ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~