CentOS 6 And An SAS Drive, Hardware

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This is… odd. Got a 6.8 box, a Dell R320 lspci tells me
01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008
[Falcon] (rev 03)
so it *should* accept an SAS drive. I’ve got a Cheetah that’s a few years old, and having pulled it out of another server (in the datecenter), I put it in this box to zero it out for reuse… and the box refuses to see the drive. *Nothing* in dmesg, *nothing* in /var/log/messages, and I tried echo “0” etc to get the SCSI buses to rescan.

Anyone have any ideas?


5 thoughts on - CentOS 6 And An SAS Drive, Hardware

  • That’s a hardware RAID controller, so it won’t (by default) see single drives and pass them directly to the OS like a normal disk controller would. You need to go into the RAID config (you should see an option to do this at boot) and configure a RAID with a single disk in a RAID0


  • John R Pierce wrote:
    datecenter), I

    Yeah, well, the thing is, for years I’ve just been shoving ordinary SATA
    drives into the same server, to use to copy from other machines via rsync, getting a drive ready to replace in another server. I’ve never had trouble with SATA. This is the first time with an SAS drive.


  • mixing SAS and SATA on the same backplane can be problematic, depending on the system.

    all my SAS2008 LSI cards, I’ve reflashed with the IT firmware, this turns them into straight host bus adapters, with no hardware raid at all, then if I need raid, I use mdraid (or zfs or whatever).