Question about JBOD raid

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[H]'er

Supreme [H]ardness
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Jun 29, 2001
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Well my question is:

Lets say I have a 4 port JBOD raid card with all 4 ports used each using a 120gig sata drive.

Now lets say a HD goes bad. Is the entire raid lost (including all data) or is the raid just a 3 HD raid and only the data from the bad HD is missing?

Thank you
[H]'er
 
[H]'er said:
Well my question is:

Lets say I have a 4 port JBOD raid card with all 4 ports used each using a 120gig sata drive.

Now lets say a HD goes bad. Is the entire raid lost (including all data) or is the raid just a 3 HD raid and only the data from the bad HD is missing?

Thank you
[H]'er
Click to expand...

It depends on the manufacturers definition of "JBOD". Some utilize JBOD as filling up one HDD after another, in this case you would only lose the data on the bad HDD. However if their definition of "JBOD" is RAID 0, then the loss of one HDD results in complete data loss.
 
HTML: 
However if their definition of "JBOD" is RAID 0, then the loss of one HDD results in complete data loss.

IMHO this would be the case. :(
 
If you're running a filesystem like EXT2/3 on it, it has superblock backups, so you'd be able to recover all the data from the disks that were left. Look up more info on this, I've been able to recover from minor data screwups with it. I'd suggest it for any JBOD system, but I'd really suggest raid5 over JBOD.

This is on linux, btw. Good luck on windows, I wouldn't try it.
 
unhappy_mage said:
If you're running a filesystem like EXT2/3 on it, it has superblock backups, so you'd be able to recover all the data from the disks that were left. Look up more info on this, I've been able to recover from minor data screwups with it. I'd suggest it for any JBOD system, but I'd really suggest raid5 over JBOD.

This is on linux, btw. Good luck on windows, I wouldn't try it.
Click to expand...

Yeah but Raid5 required all drives to be the same...I just want like a card that I can plug my storage drives into and only have one drive letter.
 
[H]'er said:
Yeah but Raid5 required all drives to be the same...I just want like a card that I can plug my storage drives into and only have one drive letter.
Click to expand...


it doesn't require the drives to be the same, it's just highly recommended. if you make an array with some that vary, the slowest and smallest will limit you but it will do it.
 
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