Does it make sense to solve these problems piece-meal:
* Performance: ZFS algorithms and NVRAM
* Error detection: ZFS checksums
* Error correction: ZFS RAID1 or RAIDZ
Nathanael Burton wrote:
If you've got hardware raid-5, why not just run regular (non-raid) pools on
top of the raid-5?
I wouldn't go back to JBOD. Hardware arrays offer a number of advantages to
JBOD: - disk microcode management - optimized access to storage - large write
caches - RAID computation can be done in specialized d hardware - SAN-based
hardware products allow sharing of f storage among multiple hosts. This
allows storage to be utilized more effectively.
I'm a little confused by the first poster's message as well, but you lose some
benefits of ZFS if you don't create your pools with either RAID1 or RAIDZ, such
as data corruption detection. The array isn't going to detect that because all
it knows about are blocks.
--
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Jeff VICTOR Sun Microsystems jeff.victor @ sun.com
OS Ambassador Sr. Technical Specialist
Solaris 10 Zones FAQ: http://www.opensolaris.org/os/community/zones/faq
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