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Forum Discussion
Power loss during drive expansion/repair/sync
Hi, I'm trying to find out how various NAS boxes cope with a loss of power while in various states; normal running, expansion, syncing, etc. I've already posted this query on the Synology forums b...
Thanks for all your replies.
I'm new to this so might have used the wrong terminology in my first post. Just to recap; If I replace a failed HDD and begin the process of rebuilding the volume - if the power is lost part way through, the data transfer to the new disk would be incomplete, and at worst (theoretically) I'd just need to start the rebuild process again from the beginning? Data on the other disks in the array shouldn't (again, in theory) get corrupted?
In any case, I've come round to the conclusion that I need to have a copy of my data elsewhere.
PapaBear; Agreed. I've ordered three 2TB HDDs, so I'll use two for the NAS and fit the third into an external USB hard drive enclosure for backups.
Because of the flooding in Thailand, I decided to order the disks early - and got them from Amazon hours before they sold out. Other suppliers are now charging double what I paid for them...
readysecure1985 wrote: during a rsync of a drive, it does not recover in the same manner. If the NAS was to lose power during a rsync a hot add may get the drive to be recognized again, however you may need to 0 fill the drive before adding it again.
I'm new to this so might have used the wrong terminology in my first post. Just to recap; If I replace a failed HDD and begin the process of rebuilding the volume - if the power is lost part way through, the data transfer to the new disk would be incomplete, and at worst (theoretically) I'd just need to start the rebuild process again from the beginning? Data on the other disks in the array shouldn't (again, in theory) get corrupted?
In any case, I've come round to the conclusion that I need to have a copy of my data elsewhere.
PapaBear; Agreed. I've ordered three 2TB HDDs, so I'll use two for the NAS and fit the third into an external USB hard drive enclosure for backups.
Because of the flooding in Thailand, I decided to order the disks early - and got them from Amazon hours before they sold out. Other suppliers are now charging double what I paid for them...
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