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Something else to think about: what's your backup strategy for this server? As folks have mentioned above, doing this project with used and/or cheap hardware increases your risk. HBA card failure as cjcox mentioned, motherboard failure, power supply, fire in the data center, etc. - there are...
With all due respect, you're not thinking far enough ahead.
You should be thinking about read performance NOW. According to your own words, the time when this box will shine will be during/after a major disaster. That will be the worst time to find out that it sucks. If this box is truly...
Another option - use an eSATA or USB connected external drive on the server. Put a zpool on the external drive, set up regular snapshots on your main data pool, then use a program to sync the data to the external drive (e.g. http://code.google.com/p/zxfer/ ) at regular intervals. Combine with...
If I understand you, you're looking for 2 buckets to drop stuff into: a big one for stuff you're not too concerned about, and a smaller one for stuff you don't want to die.
Assuming you want to keep the current division, you could simply build a non-redundant zpool of the 4 PVR drives, then a...
That's why I said "plain" electrical tape - it wouldn't surprise me that good quality tape will last much longer. My experience is with cables that were taped together by someone else; I have no idea who, other than the local phone company or a subcontractor. Fortunately we don't have to mess...
Just to confirm what you've already been told: do NOT use plain electrical tape for this. I've had to work with network cable bundles that were tied up with electrical tape by the original contractor, and after a few years the adhesive starts to give way. Where the tape slides or comes off...
At work:
Primary backup is handled by a dedicated BackupPC server. The system is running FreeBSD 8.2, OS and data on ZFS. zfSnap takes regular snapshots of everything, then we use zxfer to copy the data to a zpool in an external eSATA enclosure, which is rotated offsite on Friday. The...
Last first: if the drive is infected with something in the bootcode, booting from it could be a problem. If a file is infected, accessing the file could cause problems. Certainly something to watch out for, but then you should always be careful with any files you don't know the history of...
Another possibility - I've seen something like this on several old computers running XP; the system crashes (software fault, hardware problem, power failure, whatever) and corrupts the file system. FAT says most of the drive is in use, but directories are messed up or missing completely. I'd...
That would probably work well. At work I'm doing something similar using zxfer (c.f. http://code.google.com/p/zxfer/) and zfSnap (c.f. https://github.com/graudeejs/zfSnap), cloning from internal drives to external enclosures.
Whatever setup you come up with, make sure you've thought about...
If you can back up to another dedicated server, that's the best option. Also the most expensive and probably outside the budget. :(
Short of that, you could use external drives in USB or (better) ESATA enclosures, or spare space on another computer. Some methods to look at:
zfs send...
How good is your backup of the data? If it's good, and you really need the extra space, go with raidz1. If it were me though, I'd go with raidz2. When the 1st drive goes bad, you can survive 1 more drive failure without data loss (and if one of the 5 surviving disks is marginal, the stress of...