On 07/29/2014 01:31 PM, Francesco Parisi wrote:
> At school we have a HP server (CPU Intel 2 x 6-core, 64GB RAM) with 3 x
> 600GB 6G SAS 10Krpm, RAID 5.
>
> We would install on it a Debian Edu 7.0 (combined server:  "main" and
> LTSP server).
>
> The thin clients are all Atom, 1GB RAM (number: 30) and they will work
> as "diskless" (low-fat clients).
>
> Our main tasks: software development (gcc, eclipse, ruby, mysql).
>
> Was wondering what is the best RAID HW/SW - LVM combination to get the
> best performance,
> according to your opinion.

I realize this is old but maybe you (or someone else) are still interested.

In general, the higher the RAID level the lower the _write_ performance.

If you are using RAID mainly for the redundancy then the general 
recommendation is to go with RAID1

Of course you can combine RAID also (ex: RAID10) to suite your needs.

I have been using SW RAID in Linux for literally decades and, with the 
exception of levels that require checksum, the performance is fine for 
most things.  Ditto LVM (which I highly recommend).

Jeff

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