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Forum Discussion
NV+ slows after 15-20 minutes [SOLVED]
I am experiencing some performance issues with my NV+ It is used for storing drive images created using the Acronis Drive Image 2010 CD. Backups work fine, the issue arises when I come to do a rest...
Right, time for a little update.
I pulled disk 2 and did a hot swap so that the Raid would rebuild itself. The resyc took 8 hours and was uneventful, with the end result being that disk 2 still had no partition table. After a bit more reading around I still don't understand X-Raid properly, but it seems that one of the disks is the parity disk and that disk has no partition table. In other words this is normal, but it isn't always disk 2.
I tried to restore the Acronis backup this evening, still on 4.1.7. It failed as before and at the same point with poor media quality errors.
I then bit the bullet and jumped straight to 4.1.13 firmware. I'm delighted to say that the restore went through perfectly in just 23 minutes and it was clear within 10 seconds that the NV+ was much more responsive. Sometimes those firmware updates really do work :D
I also ran NAStester again. This time the NV+ gave 33.37GB/s read speed and 13.95GB/s write speed which compares to 21.14GB/s read and 16.64GB/s write speed on the duo
Many thanks for all the help and comments posted, I'll go back and change the title of the thread to Solved.
I'm still left with a couple of questions, further comments and thoughts much appreciated
1. Is there somewhere which explains how X-Raid works
2. As my NV+ used to work perfectly with 4.1.7, what happened to make it not work correctly (and is the current good performance simply due to "fresh" firmware which may degrade over time)
I pulled disk 2 and did a hot swap so that the Raid would rebuild itself. The resyc took 8 hours and was uneventful, with the end result being that disk 2 still had no partition table. After a bit more reading around I still don't understand X-Raid properly, but it seems that one of the disks is the parity disk and that disk has no partition table. In other words this is normal, but it isn't always disk 2.
I tried to restore the Acronis backup this evening, still on 4.1.7. It failed as before and at the same point with poor media quality errors.
I then bit the bullet and jumped straight to 4.1.13 firmware. I'm delighted to say that the restore went through perfectly in just 23 minutes and it was clear within 10 seconds that the NV+ was much more responsive. Sometimes those firmware updates really do work :D
I also ran NAStester again. This time the NV+ gave 33.37GB/s read speed and 13.95GB/s write speed which compares to 21.14GB/s read and 16.64GB/s write speed on the duo
Many thanks for all the help and comments posted, I'll go back and change the title of the thread to Solved.
I'm still left with a couple of questions, further comments and thoughts much appreciated
1. Is there somewhere which explains how X-Raid works
2. As my NV+ used to work perfectly with 4.1.7, what happened to make it not work correctly (and is the current good performance simply due to "fresh" firmware which may degrade over time)
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