[clug] Linux LVM or cache solutions for SSD + HDD

steve jenkin sjenkin at canb.auug.org.au
Thu Jan 24 21:41:14 MST 2013

David C wrote on 25/01/13 3:13 PM:

> Could just make up a RAID4 with parity on the SSD. Super fast rebuild and
> no performance bottleneck.

I've not heard of RAID-4 working with just two disks (1*HDD 1*SSD)...
parity of 1 disk == same :-)

Sounds like RAID-1, mirroring, which could be done, but doesn't
automatically promote/relegate blocks from slow to fast storage.

Thanks very much for the suggestion.

Steve Jenkin, Info Tech, Systems and Design Specialist.
0412 786 915 (+61 412 786 915)
PO Box 48, Kippax ACT 2615, AUSTRALIA

sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin

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