What NAS To Buy?
An anonymous reader writes "Currently, I'm running an old 4u Linux server for my private backup and storage needs. I could add new drives, but it's just way too bulky (and only IDE). For the sake of size and power efficiency I think about replacing it with a NAS solution, but cannot decide which one to get. The only requirements I have are capacity (>1.5TB) and RAID5. Samba/FTP/USB is enough. Since manufacturers always claim their system to be the best, I'd like to hear some suggestions from you Slashdot readers."
As a person who's suffered a RAID-5 failure and dealt with the poor performance I can say that RAID-10 is significantly better performance and significantly better reliability that is well worth it.
Don't make the RAID-5 mistake.
At one time I got myself a brand new $200 P4 (back when it was still the best chip) at a grand opening of an Office max, plugged in a whole pile of drives and set up a software raid 10.
Then I did the math. the power bills to run this thing 24/7 were going to be more than the cost of the computer. My disks would be pretty much spinning all the time even though for home usage i'd say I actually hit non-local disks maybe a few times a week at most.
So I sold it and went to external (firewire) disks and attatched them to computers I was already using. This makes so much more sense as a backup system. It actually cost less both in terms of chassis and power for a small system.
Even better is that I can detach the disks and take them offsite (my office desk at work) and rotate in new disks. my big fear is not losing my last week of stuff but losing say all my family photos or long term bussiness records, manuscripts etc. So really an always-on raid is not as big an issue to me as off-site storage. Because I rotate the disks I still have duplicates of everything.
The other nice thing is that since I have a wireless G network, when I want fast access to the disks I can move them from my desktop to my lap top.
Now some people say well, those external disks are more expensive because of their chasis and interfaces or that they are slower. But not really. with the dedicated server solution you have the computer and interface cards to buy. Probably a separate screen and keyboard as well. The power consumed is far more. And for low duty cycle usage you don't have to spin the disks all the time.
Some drink at the fountain of knowledge. Others just gargle.