Dear Sirs. I have a ML370 G4 server with 2 disk SCSI Ultra 320 of 300 GB in RAID-1 through a controller and operating system CentOS 4.7. My question: CentOS 4.7 could support the expansion of capacity by adding 6 disks SCSI Ultra 320 of 300GB in Raid-1? Thanks for your reply Luis _________________________________________________________________ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090908/3cc55554/attachment.html>
On Tue, Sep 8, 2009 at 2:01 PM, Luis campo<lcr_2505 at hotmail.com> wrote:> Dear Sirs. > > I have a ML370 G4 server with 2 disk SCSI Ultra 320 of 300 GB in RAID-1 > through a controller and operating system CentOS 4.7. > > My question: CentOS 4.7 could support the expansion of capacity by adding 6 > disks SCSI Ultra 320 of 300GB in Raid-1?Sure, create 3 RAID1s (or a RAID5/6/10) on HW or SW then create an LVM VG out of them, create LVs (striped if multiple RAID devices) out of the VG. I don't know if your using LVM now on the existing RAID1, but I wouldn't just add them to the root VG if you are, which would also give it expanded capacity, as it would make recovery more difficult if you need to put the drives into a new server. -Ross
Luis campo wrote:> > Dear Sirs. > > > > I have a ML370 G4 server with 2 disk SCSI Ultra 320 of 300 GB in RAID-1 > through a controller and operating system CentOS 4.7. > > > > My question: CentOS 4.7 could support the expansion of capacity by adding > 6 disks SCSI Ultra 320 of 300GB in Raid-1?Are you wanting to extend the existing 2 disk array to be an 8 disk array or are you adding a 2nd 6-disk array? I think both can be supported, though the second option is quite a bit simpler, I've done this myself tons of times though using fiber channel or iSCSI, which uses the same SCSI protocol as far as the OS is concerned. nate
Luis campo wrote:> Dear Sirs. > > I have a ML370 G4 server with 2 disk SCSI Ultra 320 of 300 GB in RAID-1 > through a controller and operating system CentOS 4.7. > > My question: CentOS 4.7 could support the expansion of capacity by > adding 6 disks SCSI Ultra 320 of 300GB in Raid-1?Yes, the only requirement is that the controller is recognized if you are adding an additional controller. However, Raid-1 normally means paired, mirrored partitions, so in this configuration you would be adding 3 new mount points, not additional contiguous space. There are advantages to this approach if you can control the paths used for storage - for example, you can recover data from any single disk. -- Les Mikesell lesmikesell at gmail.com