On Mon, Oct 25, 2010 at 04:35:46PM -0700, Derek Simkowiak wrote: > But I suspect that plan will fail because the RAID-1 disks will > be useless to anyone who does not have the specific make-and-model > of eSATA drive case. For example, an LSI card will not recognize a > 3ware RAID set on a batch of disks, so I suspect that a simple > (non-RAID) SATA controller on a mobo will not be able to do anything > with a single disk of the RAID-1 setup mentioned above. > > Or am I wrong because RAID-1 does no striping, just simple > mirroring? Does anyone have experience with this?
If you use mdraid with v1.0 (or earlier) metadata the partition will look just like an ext4 filesystem because the metadata is written to the end. v1.1 and newer write to the front of the partition so it isn't obvious what fs is on it. If you're using Linux to read the backups this really doesn't matter, it will recognize either. Unless speed is really an issue I'd use mdraid so that you aren't tied to any specific RAID hardware. Otherwise, make sure you have spares :) I expect the biggest hurdle, with mdraid or hardware, is going to be speed, given the size of the dataset. Brian -- ---[Office 72.3F]--[Outside 47.4F]--[Server 89.6F]--[Coaster 90.4F]--- ---[ PACIFIC GLACIER (366946000) @ 47 37.6263 -122 22.7668 ]--- Software, Linux, Microcontrollers http://www.brianlane.com AIS Parser SDK http://www.aisparser.com
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