13-Sep-15 01:12, Somnath Roy пишет:
12-Sep-15 19:34, Somnath Roy пишет:
>I don't think there is any limit from Ceph side..
>We are testing with ~768 TB deployment with 4:2 EC on Flash and it is working well so far..
>
>Thanks & Regards
>Somnath
Thanks for answer!
It's very interesting!
What is hardware you use for your the test cluster?
[Somnath] Three 256 TB SanDisk's JBOF (IF100) and 2 heads in front of that , so, total of 6 node cluster. FYI, each IF100 can support max 512 TB. Heads are with 128GB RAM and Xeon 2690 V3 dual socket on each of the server.
What a version of ceph you use?
How cluster working in degraded state? Performance degradation is huge?
I think that e5-2690 didn't enough for that flash cluster.
How you have 6 node if as you say "Three 256 TB SanDisk's JBOF (IF100)
and 2 heads in front of that", may be I not realized how IF100 working.
You use only SSD or SSD+NVE?
[Somnath] For now, it is all SSDs.
Journal is located on the same SSD or not?
[Somnath] Yes, journal is on the same SSD.
What a plugin you use?
[Somnath] Cauchy_good jerasure.
You did try the isa plugin?
You catch some bugs or strange things?
[Somnath] So far all is well :-)
It's good :)
Thanks for answer!
--
Mike, yes.
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