Re: [CentOS] Re: A question about RAID and partitions

On Tue, 22 May 2007 16:53:32 -0700 Scott Silva ssilva@sgvwater.com wrote:

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Which one would be better under the aspects of performance (CPU utilization, disk transfer rate, etc), data security and ability to recover from a disk crash?

Does LVM bring a performance penalty?

I don't think LVM brings any penalty.

That's because you have not tried to recover an LVM. I had one with Raid1 and when drive1 failed, Boot was on disk 0.

I was hoping to able to boot from disk 0 then to put a new disk next day... To make a short story even shorter, no go. I had to restore from a 3 days old backup.

LVMs are very convenient for adding new drive and making them larger. I don't know of a live-CD that supports LVMs.