> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Don
> 
> I've got 80 spindles in 5 16 bay drive shelves (76 15k RPM SAS drives
> in 19 4 disk raidz sets, 2 hot spares, and 2 bays set aside for a
> mirrored ZIL) connected to two servers (so if one fails I can import on
> the other one). Host based cards are not an option for my ZIL- I need
> something that sits in the array and can be imported by the other
> system.
> 
> I was planning on using a pair of mirrored SLC based Intel X25E's
> because of their superior write performance but if it's going to
> destroy my pool- then it's useless.
> 
> Does anyone else have something that can match their write performance
> without breaking ZFS?

You're not going to break ZFS with the X25's, if you just get 2 of them and
make them a mirror.  But be aware, that all sync writes will go to these
devices, and if you've got 80 spindles, it's possible that 1 mirror might
not be enough for your optimal performance.  You might gain more by using
more than one pair.  I don't know any way to test it other than getting your
hands on more than one pair and seeing what results you get.

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