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".
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.
----- Original Message ----- | 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". | | 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. | | -- | RMA.
The IPMI controller if you have one, or the Dell diagnostic tools such as OSMA. Megacli can report these things back to you.
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".
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
Regards,
On Mon, Jul 29, 2013 at 4:57 PM, Todor Petkov zakk@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-C...
Regards,
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Mihamina Rakotomandimby wrote:
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".
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,...)
Um, no. I don't *think* the older Dells had the Intel fakeraid; if you did it down there, does it have a PERC controller? If so, you need to look in there.
mark
I have a different system, a HP Proliant ML110
00:1f.2 RAID bus controller: Intel Corporation 82801GR/GDH (ICH7R/ICH7DH) SATA Controller [RAID mode] (rev 01)
any hints for me?
Donkey Hottie wrote:
I have a different system, a HP Proliant ML110
00:1f.2 RAID bus controller: Intel Corporation 82801GR/GDH (ICH7R/ICH7DH) SATA Controller [RAID mode] (rev 01)
any hints for me?
Do you have it set up with a RAID? If not, and you want one, you have, unfortunately, I think, Intel "fakeRAID" (yes, that's googleable, easily). I was going to use it a couple of years ago, and after the aggro I had, gave up, turned it off, and set up Linux's software RAID (md), and it works *very* well. In fact, a couple months after I turned it up on one user's servers, a disk failed. I had no trouble identifying the disk, breaking the mirror, replacing it, and it rebuilt it nicely.
mark
On 7/30/2013 11:16 AM, Donkey Hottie wrote:
I have a different system, a HP Proliant ML110
00:1f.2 RAID bus controller: Intel Corporation 82801GR/GDH (ICH7R/ICH7DH) SATA Controller [RAID mode] (rev 01)
any hints for me?
thats a intel 'matrix' fake-raid. the mdraid tools should work on it.
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Donkey Hottie -
James A. Peltier -
John R Pierce -
m.roth＠5-cent.us -
Mihamina Rakotomandimby -
SilverTip257 -
Todor Petkov