On Mon, Jul 29, 2013 at 4:57 PM, Todor Petkov <zakk at online.bg> wrote: > On 29/07/2013 11:39 PM, Mihamina Rakotomandimby wrote: > > Hi, > > > > We have on an old Dell 2850 with 4 SCSI drives, where we put a > > Hardware > > RAID5 on 3 disks and left 1 as spare. > > I dont remember exactly, but the RAID was setup in the BIOS, and when > > installing CentOS6, I just saw "1 drive". > I'm pretty sure it's a PERC4 controller in those models, but don't hold me to that. Run lspci and find out for certain what CentOS 6.x says your RAID controller is. > > > > If it was software RAID, disk failure could be seen in /proc/mdastat, > > and I could simulate failure with mdadm. > > > > As far as it is hardware ATM, how, at least, to know the state of the > > RAID array? (syncing, healthy,...) > > > > Thank you. > > Hello, > > If I remember correctly, this Dell model is with Perc RAID and can be > used with LSI tools. Check the following links: > > http://pookey.co.uk/wordpress/archives/46-dell-perc-6i-and-raid-monitoring > http://tools.rapidsoft.de/perc/ > http://hwraid.le-vert.net/wiki/LSI James and Todor are spot on. IPMI will indicate failed drives ("service ipmi start; chkconfig ipmi on; ipmitool sel list" from your shell and "ipmitool sel clear" to clear the ipmi log) and Open Manage Server Administrator (OMSA) gives you a webgui (https://<servername_or_ip:1311). Depending on what pieces you install from OMSA there's a bit of bloat (as some admins will put it). You'll also probably want MegaCLI (if your RAID controller is indeed a MegaRAID card) if you don't want to install OMSA (or want a cli alternative). If you have a network monitoring system set up, you might look for a script (such as this one for Nagios [0] which requires LSI daemons to be running). [0] http://exchange.nagios.org/directory/Plugins/Hardware/Storage-Systems/RAID-Controllers/check_snmp_raid--2F-check_sasraid_megaraid/details > > > > Regards, > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- ---~~.~~--- Mike // SilverTip257 //