Hey, anyone using an LSI MegaRAID experienced "disappearing drives"...? We installed 6 new C6 servers, each with a Supermicro SMC2108 (LSI MegaRAID) controllers and 3 PX-128M5Pro SSDs ( RAID1 + hostswap). 2 weeks (and almost no activity on it, since not in production, apart from installation) later, megacli sees (based on the slot numbers): - on one server: only the 2nd disk of the RAID + the ex-hotswap brought online. NO sign of the first disk, no error message, it just "disapeared"... - on another server: apparently lost 1 of the 2 RAID1 disks and then the second disk of the RAID1...? Now I can only see the spare brought online, so lonely... Is it "normal" for megacli to "hide" failed disks? Controller's firmware is the latest. SSDs's firmware are not... will try to flash them. BTW, any tips to flash them through the RAID controller instead of having to remove them all and connect them to a SATA controller...? This is a bit scary... Thx, JD
I have about 20 servers running CentOS 6 with LSI RAID controllers, all using MegaCLI64 and I have not have problems. I did have a problem with a white-box using a SM chassis and I found on occasion that one node would periodically fail to see a couple drives on boot though. In this case, a cold power off fixed the problem. I only have two SM chassis though, so my sample-set is low. Given this though, I'd look at the SM back-plane before the LSI controller itself. On 18/07/13 11:26, John Doe wrote:> Hey, > > anyone using an LSI MegaRAID experienced "disappearing drives"...? > We installed 6 new C6 servers, each with a Supermicro SMC2108 (LSI MegaRAID) controllers and 3 PX-128M5Pro SSDs ( RAID1 + hostswap). > 2 weeks (and almost no activity on it, since not in production, apart from installation) later, megacli sees (based on the slot numbers): > - on one server: only the 2nd disk of the RAID + the ex-hotswap brought online. NO sign of the first disk, no error message, it just "disapeared"... > - on another server: apparently lost 1 of the 2 RAID1 disks and then the second disk of the RAID1... Now I can only see the spare brought online, so lonely... > Is it "normal" for megacli to "hide" failed disks? > Controller's firmware is the latest. > SSDs's firmware are not... will try to flash them. > BTW, any tips to flash them through the RAID controller instead of having to remove them all and connect them to a SATA controller...? > This is a bit scary... > > Thx, > JD > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >-- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?
John Doe wrote:> > anyone using an LSI MegaRAID experienced "disappearing drives"...? > We installed 6 new C6 servers, each with a Supermicro SMC2108 (LSI > MegaRAID) controllers and 3 PX-128M5Pro SSDs ( RAID1 + hostswap). > 2 weeks (and almost no activity on it, since not in production, apart from > installation) later, megacli sees (based on the slot numbers): > - on one server: only the 2nd disk of the RAID + the ex-hotswap brought > online. NO sign of the first disk, no error message, it just > "disapeared"... > - on another server: apparently lost 1 of the 2 RAID1 disks and then the > second disk of the RAID1...? Now I can only see the spare brought online, > so lonely... > Is it "normal" for megacli to "hide" failed disks? > Controller's firmware is the latest. > SSDs's firmware are not... will try to flash them. > BTW, any tips to flash them through the RAID controller instead of having > to remove them all and connect them to a SATA controller...? > This is a bit scary...You're saying that if you use megacli, it doesn't show the physical drive? As someone else said, I'd look at the SM box: I have *nothing* but very bad experience with SM's quality control (try sending 4? 5? 6? boxes out of 20 back for repair from Penguin, a vendor that's all SM). mark "that doesn't count the couple or so sent back *twice*"
On 7/18/2013 8:26 AM, John Doe wrote:> We installed 6 new C6 servers, each with a Supermicro SMC2108 (LSI MegaRAID) controllers and 3 PX-128M5Pro SSDs ( RAID1 + hostswap).I helped deploy a couple petabytes of storage behind LSI MegaRAID SAS 9260-8i's which is the same card. never had any storage disappear. -- john r pierce 37N 122W somewhere on the middle of the left coast