[TriLUG] Setting Up RAID-5
anball at gmail.com
Thu Dec 7 21:51:50 EST 2006
That's unfortuate about having to buy the same type of array or at least
from the same
vendor if true. Wouldn't be too suprising though.
Would a different RAID level in hardware work for you?
Hope you find something that works well.
On 12/7/06, Brian Henning <brian at strutmasters.com> wrote:
> Hi Gang,
> Just looking for some advice on setting up a RAID-5 file server at
> home. I'm imagining putting six 160GB 7200rpm SATA-II drives in a
> machine with two simple Promise TX4 four-port controllers and doing all
> RAID functionality in software (since 6+ port RAID-5 capable cards are
> way more expensive than two dumber cards). My questions:
> - Is RAID-5 in software a bad idea? I hear it's a little
> computationally intense on write as it has to recalculate parity blocks
> for each stripe that is written. How much computer horsepower do I need
> to not have the bottleneck be processor clicks?
> - Would it really be a better idea to sink the money into a RAID-5
> capable controller instead? My fear is that if the controller dies, I
> hear you have to be able to replace it with the exact same controller if
> you want your data back.
> - Assuming software RAID, does lotsa RAM help any?
> I'll probably be using CentOS as the host OS, so that keeps it on topic.
> For the curious, the purpose of this will be a central file server for a
> home music studio. A place to store the GB upon GB of samples that come
> with quality sampling soft-synths (just bought dfh Superior.. 35GB of
> samples!), as well as finished projects (active projects would be on the
> DAW machine, to reduce disk latency).
> Brian A. Henning
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Andrew D. Ball
anball at gmail.com
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