NASLite Network Attached Storage

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PostPosted: Tue Dec 30, 2014 11:53 pm 
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Joined: Wed Jan 18, 2006 4:42 am
Posts: 44
By external hard drive has failed. I tried and external hard drive enclosure and its not working well with nas ..


I have a 6 port Adaptec raid card. 2 ports being used by the current raid array. I'm thinking of plugging the external hard drive into the raid card as a one disk array. Then use that one disk array to mirror the main array to every night. Is this any better or worse then mirroring to an external enclosure?

What are my points of failure. The hard drives. The raid card. If the raid card goes it is not going to mess up all 3 drives right? If not then this means my data is safe no matter what happens .

Thoughts?


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PostPosted: Wed Dec 31, 2014 12:17 am 
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Joined: Wed Jan 18, 2006 4:42 am
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Or am I better off putting the back up drive into the raid array and making it raid level 5?


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PostPosted: Wed Dec 31, 2014 5:41 am 
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Joined: Sat Jun 02, 2007 2:45 am
Posts: 485
Location: France
First of all, you have to know why your drive failed. No need trying to resuscitate it if it will die "again" in a few months ;) Of the choices you propose :

1/ The safest way it to backup on an external drive (in case your RAID card dies, you have a completely separate backup).

2/ If the external HD enclosure is not reliable, then connect the drive to the motherboard (and not to the RAID card). Thus, if the RAID card dies, you still have a backup on a different system).

3/ The least reliable system would be the RAID 5 option as you do not have ANY backup.

All this being said, this discussion doesn't take into account the basic rule of backup: put at least 10 km between the source and the backup and you need at least 2 copies of backups. In your configuration, if your computer burns or is stolen or ..., then the data and the backup vanishes.

Of course, it all depends on the value of the data. If it is just some music or films that you can D/L (oups, what a nasty thing to do ;) ), then no need to be a "crazy backuper" and your system will be ok. If the data is the pictures of the family over a 20 years span, then you need to be a "crazy backuper" ;)

Robby


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