Re: Software Raid 5
"Alexander (Sasha) Wait" <[email protected]>
| Newsgroups | gmane.linux.cluster.ssic.user |
|---|---|
| Message-ID | <[email protected]> |
On 6/19/06, Brown, Larry <[email protected]> wrote: > AOE stands for ATA over Ethernet. There is a kernel driver that sets up > a drive as /dev/etherd/eX.Y where X is a shelf the actual drive is > designated to be on and Y is the drive within that shelf you are > addressing. The communication for reads/writes is done over Ethernet > and so you can have raid over the network where two drives are on > different racks / power supplies etc. > RAID5 is pretty slow--even with hardware assist--I can't imagine it would be any fun over ethernet. But what about software mirroring over ethernet? iSCSI is a pretty standard way to get Xen clusters booted diskless. And I suppose you could probably do software mirroring this way. People on the list have probably done it (with or without OpenSSI.) Anyone? Sasha -- http://freelogy.org/wiki/User:AlexanderWait (GnuPG ID 4153C516)