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Forum Discussion
Balance - Find out how long?
Being new to ReadyNAS there were various things I wanted to know. Of these was how long did each of the 'volume scheduled options' take to run. I have already raised posts about Data Scrubbing, Defr...
System ..... OS ....... RAID .... Disks ......... Total ........ Used ......... Balance time ... Comments
RN202 ...... 6.3.3 .... jbod .... 2 of 3 TB ..... 5.45 TiB ..... 2.63 TiB .... < 2 min. ........ two separate jobs, one for each jbod volume.
have not run a balance on my RN104 with 4x1TB raid5 yet.
RN202 ...... 6.3.3 .... jbod .... 2 of 3 TB ..... 5.45 TiB ..... 2.63 TiB .... < 2 min. ........ two separate jobs, one for each jbod volume.
have not run a balance on my RN104 with 4x1TB raid5 yet.
Hi, some of this is from memory, it's over the past 4 to 6 weeks, so on four different weekends, we started looking into balance, defrag, scrub after performance issues with an application that uses flat files and does a lot R/W to the NAS (the app doesn't like isci, needless to say trying to get rid of it).
System ..... OS ....... RAID .... Disks ......... Total ........ Used ......... Balance time ... Comments
A RN3220 ...... 6..2.4 .... 6.... 6 of 3 TB ...... 10.8 TB ... 9 TB ..... 36 hours. ........ First time running it, Hosted VMs unusable
A RN3220 ...... 6..2.4 .... 6.... 6 of 3 TB ...... 10.8 TB ... 8 TB ..... 18 hours. ........ Second time after clearing up space, hosted VMs bearable
A RN3220 ...... 6..2.4 .... 6.... 6 of 3 TB ...... 10.8 TB ... 0.5 TB ..... cancelled after 36 hours. ........ Third time as forgot to cancel scheddule. We actually cleared up some snapshots whilst it was balancing, which meant it got confused. When we cancelled it, it was at about 208%. Hosted VMs unusable
A RN3220 ...... 6..2.4 .... 6.... 6 of 3 TB ...... 10.8 TB ... 2.63 TB ..... 5 hours. ........ Fourth time, all VMs off so don't know impact
B RN3220 ...... 6..2.4 .... 10.... 6 of 3 TB ...... 8 TB ... 1 TB ..... 25 min. ........ Never done before
B RN3220 ...... 6..2.4 .... 10.... 6 of 3 TB ...... 8 TB ... 1 TB ..... <30 min. ........ Weekly schedule now varies between <5 and <30
We're due to upgrade the OS this week on both systems which may make a difference.
Some of our systems on System A are required 16 hours a day, 7 days a week, so finding downtime to run an 8 hour process is difficult. When I've got stats for defrag/scrub i'll add them to the other post. We're also planning to increase TB and flatten System A to RAID 10 as the performance is so much better, but not til Jan
They key things I can tell from this are A) clear up any space before balancing not during, B) RAID 10 balances more efficiently than X-RAID 6, C) have it as part of your implementation plan, not an afterthought!
Hope this helps with the info
Jo
Sorry, don't know how to edit my previous post, I mixed up used and free on system B
System ..... OS ....... RAID .... Disks ......... Total ........ Used ......... Balance time ... Comments
B RN3220 ...... 6..2.4 .... 10.... 6 of 3 TB ...... 8 TB ... 7 TB ..... 25 min. ........ Never done before
B RN3220 ...... 6..2.4 .... 10.... 6 of 3 TB ...... 8 TB ... 7 TB ..... <30 min. ........ Weekly schedule now varies between <5 and <30
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