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Yes, that’s still relevant. If you are going to mix different capacities of disks it might be worth either adjusting the weights all
to the same and just accepting that you will never use the full 3TB, or partition the 3TB into 2 partitions and use the 1st 1TB as the main storage pool mixed with other 1TB OSD’s and then use the 2nd 2TB partition as a low performance
capacity pool. From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx]
On Behalf Of Lindsay Mathieson On Sun, 28 Dec 2014 04:08:03 PM Nick Fisk wrote: > This should give you a bit more performance. It's > much better to have lots of small disks rather than large multi-TB ones from > a performance perspective. So maybe look to see if you can get 500GB/1TB > drives cheap.
Is this from the docs still relevant in this case?
"A weight is the relative difference between device capacities. We recommend using
1.00 as the relative weight for a 1TB storage device. In such a scenario, a weight of
0.5 would represent approximately 500GB, and a weight of
3.00 would represent approximately 3TB"
So I would have maybe 1 3TB and 2 * 1TB
Kinda regret getting the 3TB drives now .... learning experience.
--
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