mturndal Posted October 12, 2013 Report Share Posted October 12, 2013 Hi, I have uppgraded to v10.5.0 (145) (i have a macpro 2008 with Mac OSX 10.7.5) recently and it has been going well. Im about to change the disks of my stripe set and I wanted to test a restore operation before doing this. I took one directory to restore 121 gb of data. When restore started It reported it will take 96 hours to do !!! When looking the speed of restroing it is around 21-30Mb/min ? This stripe set is capable of 2.1 - 2.3Gb/min ... If I would translate to replacing the entire disk it would take 1500 hours... (this woild not be possible) Any ideas ??? Mikael 1 Quote Link to comment Share on other sites More sharing options...
Lennart_T Posted October 12, 2013 Report Share Posted October 12, 2013 What are you restoring from? Tape, disk, what? Is it one backup/snapshot in the set? Or hundreds? When setting up a raid, do enable write cache. Our raids were really slow when writing data to them until we enabled the write cache. Quote Link to comment Share on other sites More sharing options...
mturndal Posted October 12, 2013 Author Report Share Posted October 12, 2013 I am restoring from disk. (Synology NAS 409+) I'm using AppleRAID V2.0 so i believe it has the write cache enabled. I have selected the first backup from the media set for this volume /Mikael Quote Link to comment Share on other sites More sharing options...
Lennart_T Posted October 12, 2013 Report Share Posted October 12, 2013 OK, restoring from disk should be faster than from tape. Also, the number of backups doesn't matter much when it is disk. I have no experience with AppleRAID, but I still say you should check the write cache. With other RAID systems it's off by default, unless you have a battery backup. Quote Link to comment Share on other sites More sharing options...
Scillonian Posted October 13, 2013 Report Share Posted October 13, 2013 Are you using AFP or SMB (Samba) to communicate with your NAS? If you are using AFP, try SMB and see if you get better performance. The implementations of AFP on Linux, which Synology uses, can sometimes have performance issues. Quote Link to comment Share on other sites More sharing options...
mturndal Posted October 14, 2013 Author Report Share Posted October 14, 2013 Yes I'm using AFP for the NAS connection. In between I have backgraded to 9.02 (107) and I have now correct speed (around 1,6gb/min) when restoring the stripeset I will go back to 10.5 only on server and se what this is going to do. Quote Link to comment Share on other sites More sharing options...
mturndal Posted October 17, 2013 Author Report Share Posted October 17, 2013 I have uppgraded the server to version 10.5 with clients on v 9.0.2 and I still have the slow speed about 20-30mb/min when restoring. ì will keep the v9 on boths sides until I have uppgraded the stripe set. /mikael Quote Link to comment Share on other sites More sharing options...
Don Lee Posted October 20, 2013 Report Share Posted October 20, 2013 20-30 MB/min is awfully slow. Something is going on...... Restoring from disk should be much faster than that. Quote Link to comment Share on other sites More sharing options...
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