It's certainly possible. It makes things a little more complex though. Some questions you may want to consider during the design.. - Is the customer aware this won't preserve any data on the luns they are hoping to reuse. - Is the plan to eventually replace the SAN with JBOD, in the same systems? If so you may want to make your luns look like the eventual drive size and count. - Is the plan to use a few systems with SAN and add standalone systems later? Then you need to calculate expected speeds and divide between failure domains. - Is the plan to use a couple of hosts with SAN to save money, and have the rest be traditional Ceph storage? If so consider putting the SAN hosts all in one failure domain. - Depending on the SAN you may consider aligning your failure domains to different arrays, switches, or even array directors. - Remember to take the hosts network speed into consideration when calculating how many luns to put on each host.
Hope that helps. -Brett On Thu, Aug 22, 2019, 4:14 AM Mohsen Mottaghi <mohsenmotta...@outlook.com> wrote: > Hi > > > Yesterday one of our customers asked us a strange request. He asked us to > use SAN as the Ceph storage space to add the SAN storages it currently has > to the cluster and reduce other disk purchase costs. > > > Anybody know can we do this or not?! And if this is possible how we should > start to architect this Strange Ceph?! Is it good or not?! > > > > Thanks for your help. > > Mohsen Mottaghi > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io >
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