> 1. To build a high performance yet cheap radosgw storage, which pools should > be placed on ssd and which on hdd backed pools? Upon installation of > radosgw, it created the following pools: .rgw, .rgw.buckets, > .rgw.buckets.index, .rgw.control, .rgw.gc, .rgw.root, .usage, .users, > .users.email. There is a lot that goes into high performance, a few questions come to mind: Do you want high performance reads, writes or both? How hot is your data, can you bet better performance from buying more memory for caching? What size objects do you expect to handle, how many per bucket? > 4. Which number of replaction would you suggest? In other words, which > replication is need to achive 99.99999% durability like dreamobjects states? DreamObjects Engineer here, we used Ceph's durability modeling tools here: https://github.com/ceph/ceph-tools You will need to research your data disk's MTBF numbers and convert them to FITS, measure your OSD backfill MTTR and factor in your replication count. DreamObjects uses 3 replicas on enterprise SAS disks. The durability figures exclude black swan events like fires and other such datacenter or regional disasters, which is why having a second location is important for DR. > 5. Is it possible to map fqdn custom domain to buckets, not only subdomains? You could map a domain's A/AAAA records to an endpoint but if the endpoint changes your SOL, using a CNAME at the domain root violates DNS rfcs. Some DNS providers will fake a CNAME by doing a recursive lookup in response to an A/AAAA request as a work around. -- Kyle _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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