Q: JBOD, Spanning, Striping, And It's Usage For TM Backups

[VirtualRain]

If I had these kinds of storage requirements, I would find a way to do it without JBOD or RAID0. If anything, I'd want to use RAID1 for archiving my last few years worth of work.

Here's what I would probably do assuming:

- Active weeks project fits within 100GB
- 3 years of work fills 3TB

2x 120GB SSD's in RAID0 for my OS/Apps and active project.
1x 1-2TB Drive for TM backup of above for short-term backup/restore
2x 3TB Drives in RAID1 in a FW800 enclosure for archives of my work

For disaster recovery, I might use a third 3TB drive for monthly backups of the archives that gets stored offsite.

The problems of dealing with JBOD or RAID0 in the event of a drive failure are just not worth the hassle, especially with 3TB drives only costing $200.

 

[philipma1957]

...
2x 3TB Drives in RAID1 in a FW800 enclosure for archives of my work

For disaster recovery, I might use a third 3TB drive for monthly backups of the archives that gets stored offsite.

The problems of dealing with JBOD or RAID0 in the event of a drive failure are just not worth the hassle, especially with 3TB drives only costing $200.

this is a good point a pair of 3tb's in a mirror would be good for the tm requirement. I wonder if the sans digital towerstor2 would work with a pair of 3tb hdds in a mirror.

you could use esata for speed and fw800 in case you need some booting.

 

[nanofrog]

The problems of dealing with JBOD or RAID0 in the event of a drive failure are just not worth the hassle, especially with 3TB drives only costing $200.

For such a small capacity requirement, I'd agree.

But JBOD has it's uses when the capacity requirement exceeds that possible using a single disk, performance = single disk, and budget limitations won't allow for another alternative.

I'm not a fan of stripe sets, which you know, but for data that doesn't change often (i.e. libraries, and changes usually are additions to it), or temp data (i.e. scratch), a stripe set can be an acceptable solution (cheap performance; and if the data is needed for a recovery, is stored on other media such as a download or on an optical disk).

Just to put things into perspective.

 

[dknightd]

any backup is better than no backup. I hope the OP has been making backups while this discussion goes on.

Every backup is subject to failure, so the more backups the better.