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Forum Discussion
Balancing Volumes makes ReadyNAS unresponsive
I've read through multiple discussions from users stating Balancing is causing problems with their ReadyNAS units. Mainly two issues... 1. Balancing can take DAYS to run. As an example one of our un...
What Readynas models are you experiencing this on?
Is this the first time you have tried to balance the volume?
How full is the data volume?
Is there a lot of data change each day?
All of these may affect the time it takes to balance; performed regularly it should take much less time. My balance takes under a minute and is performed quarterly, but then I don't have a lot of data changing on the volume.
Balancingand scrubing operation like array rebuilding are heavy demanding operations!
vandermerwe wrote:
My balance takes under a minute and is performed quarterly, but then I don't have a lot of data changing on the volume.
Mine complete quickly also. The longer it takes, the more it is needed.
I agree that maintaining enough free space should help, and you could consider running them more frequently if the time starts to grow.
You might also try disabling spindown (if enabled) while it is running, and see if the speed picks up.
Hello All,
To answer some of the questions...
- What Readynas models are you experiencing this on? It's a 300 series, 4 bay with four 3TB drives
- Is this the first time you have tried to balance the volume? No, we've been trying to get it balanced for several months. Balancing was initially configured for monthly runs. It was changed to weekly when backups started failing because the unit was unresponsive.
- How full is the data volume? I't's around 50% used currently. At one point it was around 90% because of the snapshots. We reduced the snapshots a number of times and ultimately disabled snapshots completely.
- Is there a lot of data change each day? Yes, the device is used for backups Mon-Fri of multiple systems. Weekends have no activity so balancing is set to kick off at 1:00AM Saturday morning; after backups are completed. Last Monday night it was at 8% completed and had been running over 60 hours to get to that point. It has done this for the past three weekends.
- Spin down is not enabled.
We have other ReadyNAS units that data doesn't change as much and balancing finishes in under a minute.
We agree balancing and scrubbing can take a while, but 8% in 60 hours seems excessively slow.
There are some thresholds and filters that can be applied when you run the scrub from ssh.
It would be useful if there were a couple of options in the web ui (fast, normal, complete) that would give you some more control over the running time.
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