benok Posted August 25, 2015 Share #26 Posted August 25, 2015 With further investigation, I found instability of my environment is not for NFS, but another hardware problem. After separating external esxi's RDM disks using port multiplier & internal intel ICH disks to different disk groups makes my env stable. Now, all NFS's file open problem went away. "WARNING: NFS: ###: Got error 13 from mount call" log still generated every 1 minute, but it doesn't seems matter. Does this exist in your vmkernel.log ? > all I'll choose 5.2 with SSD cache, NFS datastore without VAAI. Without VAAI, cloning is slow & can't use thick disk. But using DSM VM inside single ESXi server, cloning network traffic is local and CPU overhead with VMXNet3 would be a little(?). Quote Link to comment Share on other sites More sharing options...
b0fh Posted August 25, 2015 Share #27 Posted August 25, 2015 Hey benok, let us know how the performance is for your VMs using ssd cache versus not. I'm considering the same thing, ditch VAAI for ssd cache. Quote Link to comment Share on other sites More sharing options...
demon23 Posted February 18, 2016 Share #28 Posted February 18, 2016 Hi guys! Does anyone try NAS VAAI with lates build of XPEnology? Quote Link to comment Share on other sites More sharing options...
quicknick Posted March 24, 2016 Share #29 Posted March 24, 2016 I have tested all 5.2 versions thoroughly.NFS VAAI is broken in all 5.2 XPEnology releases. There is no issued on real Synology HW. I am now back on 5.1 5055 until someone fixes this. I do not want to use iSCSI as I get better throughput through NFS. Quote Link to comment Share on other sites More sharing options...
benok Posted October 25, 2016 Share #30 Posted October 25, 2016 Recently I migrated my system from DSM5.2 to DSM 6 with NewLoader and checked VAAI feature. It works fine with NFS again. I can use thick provisioning with NFS and offline cloning is also working. There's no problem with SSD cache. I'm very happy with DSM6 with NewLoader. p.s. I didn't try to use btrfs yet for datastore, because I've heard btrfs has very bad performance as Virtual Machine's datastore... ZFS, BTRFS, XFS, EXT4 and LVM with KVM – A Storage Performance Comparison (2015) | Hacker News https://news.ycombinator.com/item?id=11749010 ZFS, BTRFS, XFS, EXT4 and LVM with KVM – a storage performance comparison http://www.ilsistemista.net/index.php/v ... print=true I'm interested in Snapshot Replication, but it's very hard to convert big datastore & check performance for me because of the lack of available hardware resources. https://www.synology.com/en-us/knowledg ... ection_mgr If someone tested performance of btrfs, please share the result on the forum Quote Link to comment Share on other sites More sharing options...
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