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X4500 Thumper and RAID configuration

Hi,

Scenario:

Suppose I have an X4500 running with Solaris and ZFS . I configured RAID5 configuration with the ZFS tools. The RAID is working fine, but after x months/years I need to make a new Solaris installation from scratch on the X4500 machine.

Will my ZFS data located in the RAID be in danger?

In a hardware based RAID, the meta-data for the RAID configuration and rebuilding it is done regardless of the OS running above it. It is done by the RAID controller.

However, in X4500 with Solaris+ZFS - the OS itself is managing the RAID configuration. So...? What will happen to the data if the OS fails or needs to be reinstalled?

Thanks,

Itay.

[698 byte] By [itaymena] at [2007-11-26 19:28:11]
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# 1

By RAID5 I assume you mean RAID-Z which is the ZFS replacement for RAID-5. If you actually mean SVM RAID-5 with ZFS on top of that, I don't think there is a way to get the data. But with ZFS, the state is actually stored within the pool, so it is system-independent. If you intend to upgrade, first run zpool export, do the install, then do zpool import (it will scan your disks for any pools). If your system crashes, you should be able to do a zpool import -f (which will force import a non-exported zpool).

ywlke287a at 2007-7-9 21:55:25 > top of Java-index,Sun Hardware,Servers - General Discussion...
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