hardware for home use large storage

[Tom Evans]

On Tue, Feb 9, 2010 at 3:01 PM, Dan Langille <dan at langille.org> wrote:
>
> On Tue, February 9, 2010 9:09 am, Tom Evans wrote:
>> On Tue, Feb 9, 2010 at 1:45 PM, Dan Langille <dan at langille.org> wrote:
>> One thing to point out about using a PM like this: you won't get
>> fantastic bandwidth out of it. For my needs (home storage server),
>> this really doesn't matter, I just want oodles of online storage, with
>> redundancy and reliability.
>
>
> A PM?  What's that?
>
> Yes, my priority is reliable storage.  Speed is secondary.
>
> What bandwidth are you getting?
>

PM = Port Multiplier

I'm getting disk speed, as I only have one device behind the PM
currently (just making sure it works properly :). The limits are that
the link from siis to the PM is SATA (3Gb/s, 375MB/s), and the siis
sits on a PCIe 1x bus (2Gb/s, 250 MB/s), so the bandwidth from that is
shared amongst the up-to 5 disks behind the PM.

Writing from /dev/zero to the pool, I get around 120MB/s. Reading from
the pool, and writing to /dev/null, I get around 170 MB/s.

Cheers

Tom