Hi, all,
while there is quite a bit of documentation on how to improve ZFS performance
by using a combination of rotating disks and SSDs, I have not found much about
an SSD only setup.
We are planning to try a hosting server with 8 SATA SSDs with ZFS. Things I am
not at all sure about:
* Does the recommended limit of 6 disks for a RAIDZ2 still
hold? 2x 4 disks is quite a bit of overhead, could I use all 8
in one vdev and get away with it?
(The maximum of 6 recommendation is in some old Sun doc)
* Will e.g. MySQL still profit from residing on a mirror
instead of a RAIDZ2, even if all disks are SSDs?
* Does a separate ZIL and/or ARC cache device still
make sense?
Any pointers or direct help greatly appreciated. Or should I take this to
freebsd-fs@?
Thanks and best regards,
Patrick
--
punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe
Tel. 0721 9109 0 * Fax 0721 9109 100
[email protected] http://www.punkt.de
Gf: Jürgen Egeling AG Mannheim 108285
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