I know not your question, but what is the current SSD's your using in the
cluster?
You could end up with an imbalanced cluster performance wise, if you have a mix
of SSD's with a large performance difference, specially with filestore and it's
journal writes.
---- On Thu, 19 Dec 2019 05:41:02 +0800 Sinan Polat <si...@turka.nl> wrote ----
Hi,
I am aware that
https://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
holds a list with benchmark of quite some different ssd models. Unfortunately
it doesn't have benchmarks for recent ssd models.
A client is planning to expand a running cluster (Luminous, FileStore, SSD
only, Replicated). I/O Utilization is close to 0, but capacity wise the cluster
is almost nearfull. To save costs the cluster will be expanded will
customer-grade SSD's, but I am unable to find benchmarks of recent SSD models.
Does anyone has experience with Samsung 860 EVO, 860 PRO and Crucial MX500 in a
Ceph cluster?
Thanks!
Sinan
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