Hi, > Can someone give an insights, if it possible to mixed SSD with HDD? on the > OSD.
you’ll have more or less four options: - SSDs for the journals of the OSD-process (SSD must be able to perform good on synchronous writes) - an SSD only pool for „high performance“ data - Using SSDs for the primary copy (fast reads), can be combined with the first - Using a cache pool with an SSD-only pool in front of the main disk-pool > How can we speed up the uploading for file for example, as per experience it > took around 18mins to load 20Gb images (via glance), in 1Gb network. Or it is > just normal? That’s about 20MB/s, for (I guess) sequential writes on a disk only cluster that’s ok. But you can improve that with SSDs, but you have to choose the best option for your setup, depending on the expected workload. greetings Johannes _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
