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2 resyncs after drive upgraded
I've got a 516 that loaded with 4TB drives. I've been replacing them with 6TB drives for a while now. I'm setup with RAID 6.
The process i use is to pull out the 4TB drive, and put the 6TB drive in. While it's on.
It appears that starting with drives 4 and drive 5 it is performing 2 syncs after each drive replacment.
I am not sure what it did for number 4, but for drive 5 it did something odd as well. The upgrade of drive 5 was done while on OS 6.7.1. I don't recall what drive 4 was on.
I put in the new 6TB drive and it immeditaly said it was 34% synced. It then finished the sync and changed from degraded to redundant and then started to sync again.
Is this normal?
The NAS preserves the original 6x1TB raid layer, and adds a new 3TB layer on top (currently 5x3TB). Both layers needed to be synced, so there are two phases.
Since RAID-6 requires the four largest drives to be the same size, you should have seen expansion from 4 TB to 10 TB when you added upgraded the 4th drive. The NAS likely needed to be rebooted at that point.
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How many 6 TB drives have you installed?
When I said drive 4 and 5, i meant the 4th and 5th 6TB drive that i've put in. So 5x6TB drives and 1x4TB drives currently.
The NAS preserves the original 6x1TB raid layer, and adds a new 3TB layer on top (currently 5x3TB). Both layers needed to be synced, so there are two phases.
Since RAID-6 requires the four largest drives to be the same size, you should have seen expansion from 4 TB to 10 TB when you added upgraded the 4th drive. The NAS likely needed to be rebooted at that point.
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