[sclug] RAID and/or LVM for ganging together HDDs to expand capacity?

Keith Edmunds kae at midnighthax.com
Thu Oct 18 23:22:02 UTC 2007

On Thu, 18 Oct 2007 22:24:16 +0000, tmdg at weardale.cl said:

> Once you start running out of space again just buy another disk and add
> that in to the Volume group in the same way.

The problem with this approach is that with each additional disk, the MTBF
of the array decrease (Mean Time Between Failures). If you expect, for
example, a disk to last three years, you'd expect one in three to fail
each year - and each time it does, you've lost all the data.

By the way, how are you backing up 300Gb+ of data?


Keith Edmunds

|  Tiger Computing Ltd  |  Helping businesses make the most of Linux  |
|  "The Linux Company"  |       http://www.tiger-computing.co.uk      |

More information about the Sclug mailing list