On 07/18/2018 07:44 PM, Satish Patel wrote: > If i have 8 OSD drives in server on P410i RAID controller (HP), If i > want to make this server has OSD node in that case show should i > configure RAID? > > 1. Put all drives in RAID-0? > 2. Put individual HDD in RAID-0 and create 8 individual RAID-0 so OS > can see 8 separate HDD drives > > What most people doing in production for Ceph (BleuStore)? In my experience, using a RAID card is not ideal for storage systems like Ceph. Redundancy comes from replicating data across multiple hosts, so there's no need for this functionality in a disk controller. Even worse, the P410i doesn't appear to support a pass-thru (JBOD/HBA) mode, so your only sane option for using this card is to create RAID-0s. Whenever you need to replace a bad drive, you will need to go through the extra step of creating a RAID-0 on the new drive. In a production environment, I would recommend an HBA that exposes all of the drives directly to the OS. It makes management and monitoring a lot easier. -Troy _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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