HDD Sizes

[Algis]

Hi all;

It is not very clear to me: does the cache disk or the parity disk must be of the same capacity as my storage? I planned to use a 500Gb for cache and 160+320Gb as parity for a mirror of 2TbX2... But it doesn't seems possible; or am I missing something?

ASUS M2N
4Gb RAM
2Tb HDD WD SATA
500Gb HDD Momentus XT Seagate SATA
160Gb+320Gb IDE drives

Thanks for any insight

Algis

 

[dlavigne]

What are you trying to create? A ZFS mirror? ZFS does not use a parity disk and swap is automatically created for you. ZFS is also optimized for same sized disks.

 

[Algis]

Thanks for reply.

I was more thinking of a RAID5 with my 2TBx2 and the 500Gigs as the cache drive. Now there are 160+360Gb IDE that works fine and that I hate to see trashed...

Speed is not the essence here; mostly reliability and ability to stream at medium speed would be fine.

Thanks again

Algis

 

[dlavigne]

If you want reliability, don't use RAID5 and drum up some same sized disks for a RAIDZ* Search the forums for why RAID5 is dead.

 

[Algis]

Thank you :)