Hi everyone:
I plan to use SSD Journal to improve performance.
I have one 1.2T SSD disk per server.
what is the best practice for SSD Journal ?
There are there choice to deploy SSD Journal
1. all osd used same ssd partion
ceph-deploy osd create ceph-node:sdb:/dev/ssd ceph-node:sdc:/dev/ssd
2.each osd used one ssd partion
ceph-deploy osd create ceph-node:sdb:/dev/ssd1 ceph-node:sdc:/dev/ssd2
3.each osd used a file for Journal, this file is on ssd disk
ceph-deploy osd create ceph-node:sdb:/mnt/ssd/ssd1
ceph-node:sdc:/mnt/ssd/ssd2
Any suggest?
Thanks.
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