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Forum Discussion
data loss with resynchronization?
Dear experts, I’m wondering if you could weigh in on the risks of losing data from hard drives during a resynchronization. Humbly, I explain my self-imposed predicament. I have a Pro Pioneer loade...
The resync in this case is really better described as an expansion. All the sectors in your data volume (whether they are used or not) are reorganized into the large new volume. Your data is always vulnerable in a resync or expansion, so it is best to have an up to date backup.
When you only had the new drive fully inserted, the NAS did a new factory install on it. The three older drives were not inserted, and therefore were not affected. If you had inserted those drives with the NAS running, then they would have been treated as new disk installs. However, the unit was shut down. It should then have booted off of drive 1 (the old array), and synced the new drive to the old three. If for some reason it booted off disk 4 (the new drive), then it would have synced the old array to the newly created one - and in that scenario you would have lost data. However, I think Netgear is correct, and that your data is likely ok.
I suggest that you first boot up the NAS with only the 3 old drives installed. The volume might not be redundant. Once up, complete your backup. Then reinsert the new drive 4.
When you only had the new drive fully inserted, the NAS did a new factory install on it. The three older drives were not inserted, and therefore were not affected. If you had inserted those drives with the NAS running, then they would have been treated as new disk installs. However, the unit was shut down. It should then have booted off of drive 1 (the old array), and synced the new drive to the old three. If for some reason it booted off disk 4 (the new drive), then it would have synced the old array to the newly created one - and in that scenario you would have lost data. However, I think Netgear is correct, and that your data is likely ok.
I suggest that you first boot up the NAS with only the 3 old drives installed. The volume might not be redundant. Once up, complete your backup. Then reinsert the new drive 4.
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