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Disable automatic snapshot pruning
Firmware version 6.7.5 Ransomeware is a hot item these days. My fear is that this will happen to my company data one day. This is really not desired and the snapshot functionality which is availa...
Replicate can create a temporary snapshot, back up that snapshot, and then delete it. That ensures that the data being backed up isn't changing while the backup is being made. That's described on page 28 here: http://www.downloads.netgear.com/files/GDC/READYNAS-COMMON/ReadyNAS%20Replicate%20UM_10Jul2013.pdf
If enough files change while the backup is in progress, then the free space could drop to the point that triggers the automatic snapshot deletion.
The backups themselves are not snapshots, so they wouldn't be automatically deleted.
well, as you already state, snapshots take up space, and when your space gets low, the system must release older snapshots.
Otherwise, your volume would simply fill up and no more data would be written.
It sounds like you really need to consider a proper backup system.
Neither a nas, nor raid, nor snapshots are a backup.
A backup is a separate copy of your data, on a different device(s), and ideally in different locations.
Nas's can fail, raid can fail, drives can fail, you can get virus/malware, you can have disgruntled employees who delete or corrupt your data, you can have fire/flood/etc, or theft.
Only backups will help you.
TeknoJnky wrote:
Only backups will help you.
Of course I agree.
In the specific case of ransomware, you'd want a local backup that is not directly reachable by the PCs. Disconnected USB drives are one way. A backup NAS with SMB, AFP, and NFS turned off is another. A cloud backup provider that has unlimited storage is another possibility.
I use Crashplan for disaster recovery myself (and also have a backup NAS with file sharing turned off).
If your primary NAS has 60% free space, then even if ransomware rewrites everything you still won't trigger the pruning. Of course that is expensive. And you'd ideally want to isolate the NAS when you see the attack begin.
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