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Re: How about LVM?



Dennis G. Wicks wrote:
Greetings;

What do you think of LVM? Is it stable and reliable enough to use for a backup repository?

I have several 250GB drives I am thinking of using for backup but administering the assignment of data to drives would be a headache. I am thinking that LVM might solve that by letting me make one big dataspace.

Comments?

Thanks for all the help, no matter what I ask!

TIA!
Dennis


Quite stable. The only problem is this: the more drives you use, the greater the point of failure is. If you use 5 HDs for an LVM, you have 5 points of failure in which you will loose all your data. HTOH, if you run a raid (1 or 5) you have built in redundancy of one failure allowed before data is lost.

What does this mean to you? I would run a raid (not raid0) and run lvm on top of that (assuming you have enough HDs). RAID1 will give you N/2 where N is size of the drive. RAID5 will give you N+N+N.....-N for disk size (you loose one disk worth of storage in raid5).

HTH

--
Damon L. Chesser
damon@damtek.com
http://www.linkedin.com/in/dchesser


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