Hi All, If I put a 1TB HD in my server (because they are on sale this week), can I later Mirror to a second 1TB drive without destroying the data on the first? On Windows and OS X, I know I can't do this... Thoughts? -ML
ML wrote:> Hi All, > > If I put a 1TB HD in my server (because they are on sale this week), > can I later Mirror to a second 1TB drive without destroying the data > on the first? > > On Windows and OS X, I know I can't do this... > > Thoughts? > > -ML > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >Certainly I've used this http://linux-raid.osdl.org/index.php/Linux_Raid successfully a number of times. HTH Rob -------------- next part -------------- A non-text attachment was scrubbed... Name: rkampen.vcf Type: text/x-vcard Size: 121 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20090929/d83539bb/attachment.vcf>
ML wrote:> Hi All, > > If I put a 1TB HD in my server (because they are on sale this week), > can I later Mirror to a second 1TB drive without destroying the data > on the first? >if you set it up as a mdraid mirror without the mirror, yes.
ML wrote:> Hi All, > > If I put a 1TB HD in my server (because they are on sale this week), > can I later Mirror to a second 1TB drive without destroying the data > on the first? > > On Windows and OS X, I know I can't do this... > > Thoughts? > > -ML >Step by step instructions at http://www.howtoforge.com/software-raid1-grub-boot-fedora-8 BUT be sure you have an up-to-date backup in case it clabbers.
ML wrote:> > If I put a 1TB HD in my server (because they are on sale this week), > can I later Mirror to a second 1TB drive without destroying the data > on the first? > > On Windows and OS X, I know I can't do this... > > Thoughts?Partition the disk into one partition of type 'FD' (raid autodetect) Use mdadm to create a 2 device RAID1 but specify one device as "missing" and mount the md device instead of the disk partition. Then when/if you get a matching drive, create the matching partition and add it to the raid with 'mdadm --add'. Personally, I think this should be the default mechanism when installing but you can't do it at all there. -- Les Mikesell lesmikesell at gmail.com