Hi Erik,
On 22/06/2009, at 1:15 PM, Erik Trimble wrote:
I just looked at pricing for the higher-end MLC devices, and it
looks like I'm better off getting a single drive of 2X capacity than
two with X capacity.
Leaving aside the issue that by using 2 drives I get 2 x 3.0Gbps
SATA performance instead of 1 x 3.0Gbps, are there problems with
using two slices instead of whole-drives? That is, one slice for
Read and the other for ZIL?
The benefit you will get using 2 drives instead of 1 will be doubling
your IOPS which will improve your overall performance, especially when
using those drives as ZILs.
Are you planning on using these drives as primary data storage and ZIL
for the same volumes or as primary storage for (say) your rpool and
ZIL for a data pool on spinning metal?
cheers,
James
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