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[gnet158]

Hello, I'm a soon to be new 325 owner and need some advice.  I recently suffered a HD crash, luckily I had all my data backed up on my external drive.  This is what prompted me to look for a NAS and I found a great deal at Compusa.  After reading a lot of posts on this site about how Raid 1 isn't a true back up solution I need some advice.

I have 2x 1tb hard drives (the one that failed has been RMA'd and the other is the external).  Which configuration do you recommend?

Raid 1 both 1tb HD's (but I'm guessing I'd need a third HD to backup to)
or
Mount each as a separate drive/volume and manually back them up? 

Do you guys leave your 325 on all the time?  Any issues with the power supply? 

[JavaLawyer]

First, please read the following thread: Data Backup vs. Redundancy.

If you are maintaining all of your data on the DNS-325 (original files + backup) and do not plan on storing data on an external device, I recommend configuring your DNS-325 as two separate Volumes and scheduling a nightly backup from Volume_1 to Volume_2. The thread I referenced above describes the dangers of using RAID-1 as the sole storage for your original and backup data.

[gnet158]

Thanks, I did read that. 

Anyone know the MTF rate or how long it will last by leaving it on 24/7?

[JavaLawyer]

Anyone know the MTF rate or how long it will last by leaving it on 24/7?

I can't speak to the MTF for the DNS-325, but I do have two DNS-343 that have been running nonstop for 3-1/2 years with at most 1 week of downtime during that period. Keep in mind that NAS are designed to run for long stretches to meet the availability needs of other networked devices.