D-Link Forums
The Graveyard - Products No Longer Supported => D-Link Storage => DNS-323 => Topic started by: arek1 on April 11, 2010, 12:35:42 PM
-
Hi All,
When I bought my DNS-323 I put in it two identical 500 GB HD. I setup it for RAID and have 500 GB instead 1 TB. I made it because I thought it is much safer - if one disc will fail all data will be safe on other, just need to replace failed disc and all will be OK but now I am not sure is it correct.
Can any body explain me is it true?
Best wishes
ArekS
-
Raid 1, mirroring, does just that. The contents (files) on both disks are identical and are "seen" as a single drive to most systems. If one drive has a hardware failure, your data is still available on the other drive.
It is NOT a backup and if you delete a file it gets removed from both.
It can be part of a backup strategy and does prevent against data loss due to hardware failure.
-
Thank you, now I am filling much better.
ArekS
-
Jip - spot on - mirror is best in the scenario but there is nothing that is 100% fail proof from human error... ::)
-
RAID1 is neither for speed nor safety - it's for availability.
The purpose of RAID1 is to reduce the potential downtime that would occur in the event of a disk failure - it should NEVER be considered part of a backup strategy, unless, your RAID1 array happens to be on a backup device separate from your primary data store.
Unless you need constant, uninterrupted availablity of your data, then RAID is not the solution you're looking for.