zfs discuss - Jun 2010 - Sharing root and cache on same SSD?

Are there any potential problems that one should be aware of if you would like
to make dual-use of a pair of SSD MLC units and use parts of them as mirrored
(ZFS) boot disks, and then use the rest of them as ZFS L2ARC cache devices (for
another zpool)?

The one thing I can think of is potential wear of the SSD devices due to writing
of cache data to them, making them potentially fail earlier that they otherwise
would have.

- Peter
-- 
This message posted from opensolaris.org

On Thu, Jun 10, 2010 at 7:31 AM, Peter Eriksson <peter at ifm.liu.se>
wrote:
> Are there any potential problems that one should be aware of if you would
like to make dual-use of a pair of SSD MLC units and use parts of them as
mirrored (ZFS) boot disks, and then use the rest of them as ZFS L2ARC cache
devices (for another zpool)?
>
> The one thing I can think of is potential wear of the SSD devices due to
writing of cache data to them, making them potentially fail earlier that they
otherwise would have.
It''s not possible to do this with the Caiman installer.

There are ways to make it work, but they require tinkering after the install.

-B

-- 
Brandon High : bhigh at freaks.com