That's a fakeraid card(tm)
You will be better off using software raid if you buy that.
I'm looking at getting a one of these for RAID 5.
Promise 4 Channel SATA II Raid 0.1.10 & 5 - Ebuyer
Can anybody confirm if it will work with FreeNAS? I can't find the card in the known list of supported RAID controllers but can anyone advise. If it won't work can anyone advise on the cheapest RAID 5 controller that will work with FreeNAS (4-port SATA)
How about software RAID? I'm looking at building a couple of boxes (pretty decent spec) to use as nightly back-up boxes.
Will software RAID be able to cope with this? Say if it were writing 200gb per night?
depends on the system cpu and what other tasks it's doing.
I get about 1% cpu load on a Intel Quad Core2 Xeon 2.4Ghz running a 1.5Tb Raid5 array.
Spec of the machine I had in mind:
4 x 750gb HDD (7200rpm) - losing 1 for RAID
Intel Celeron D 3.06GHz
It will be doing nothing but backing up about 200GB per night (1TB over weekend) and then pushing out using rsync to a mirrored box during the day (on a VLAN).
I suggest you build the box and put it through it's paces with bonnie++
Bonnie++ now at 1.03c (very stable)!
As long as the disk performance can keep up with the network, you should be fine. If it's borderline, stick more ram in it.
Thanks Geoff - will give it a try!
Oh, one other thing - I'm going to need a motherboard with 4-ports for the drives.
Can you show me a one that will do the job? Preferably with a compatible chip?
Anything from a decent brand will be ok. The only thing to watch out for is to stay away from nForce chipsets.
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