Hi
I've got a fileserver at home with the following space disk space:
2 * 1TB SATA disks directly connected to the motherboard
1 * 1TB partition on a SATA disk directly connected to the motherboard
2 * 1TB SATA disks connected to the motherboard via a SATA Port Multiplier
So I have 4 * 1TB physical devices available, but two of them share a SATA cable.
I'm thinking that RAID10 is probably the way to go here, but I would really like to avoid the two disks
behind the port multiplier being used to mirror the same blocks, since the multiplier is quite new and
I don't know yet how well it will stand up over multiple years.
I've looked through the Linux RAID HOWTO and the mdadm/md man pages and I can't see a way to
specify in a RAID10 setup that specific disks should not be used to mirror each other.
1) Am I wrong about that? Is it possible to directly influence the layout in that kind of detail?
2) Will I take a performance hit if I manually make two RAID1 sets and then a RAID0 of them?
3) Should I forget about the layout and just use RAID6?
Cheers,
Chris Jones
cmsj@xxxxxxxxxx
www.tenshu.net
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