I will tell you of our experience Dell perc controllers with HDD and separate Intel NVMe for journals etc With the Disk first behind the controller with caching enabled and it set as a raid0 and the OSDs were encrypted everything was good. When we upgrade to LVM and still encrypted and still raid0 on the perc - everything was fine.... for a while As soon as drives started to fail - it became incredibly difficult to find the right drive according to the idrac, the OSD and everything was difficult Remember not all drives actually fail - some go in to a state that go up and down or can cause a lot of noise on the bus of the server taking a whole server offline So we reconfigured (all / most OSDs / drive to not use raid0 cache) did notice a slight drop in performance BUT we can now find and address the OS/s hard drives in the idrac We also don't have to worry about the battery failing on the perc (hopefully anyway) So I would test you config before going into production I also don't know what info the idrac will give you on the SSD, vs the OS tools Joe
>>> <m...@pop.de> 11/25/2021 9:42 AM >>> Hi, I plan to use Samsung PM883 1.92TB as OSD with Raid0 behind PERC controller and Journal and Data will be on the same drive. Does anyone have a similar setup? Any hints or tips would be appreciated. BR Max _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
