• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

What is JBOD?

I think it's like RAID 0, but you can use two different sizes of hard drives and it's slower... but there's a good chance I'm wrong.
 
I think it just sticks the disks together, so if it's writing, and runs out of space on one, it just continues writing on the next drive, treating it like one big drive.
 
it stands for just a bunch of disks, and it jus means that the disks arent messed with by the raid controller(ie. no raid on those disks)
 
Stupid. It just combines two hard drives into one, but that can be difference sizes. All the risks of raid wiht none of the gains.
 
JBOD just combines drives into 1 bigger drive. So if you put a 20GB drive and a 40GB drive and configured them as a JBOD you'd have:

20GB + 40GB = 60GB

and your OS would see a 60GB drive.

Files are not distributed in any special way, so there is no performance gain.

RAID is slightly different.

RAID 0 enhances performance by striping the data across the drives - i.e. a little bit of each files is written on each drive. When reading files, performance is enhanced because it can read a little from each drive at the same time instead of reading the whole file from one drive.

An example of RAID 0 would be if you have two 20GB Drives:

20GB + 20GB = 40GB

And your OS would ses a 40GB drive. Note you have to use matched drive sizes. If you were to use a 20GB drive and a 40GB drive, you'd have the following:

20GB + 40GB = 40GB (20GB unused)

RAID 1 is for data integrity. Each hard drive is a mirror of each other. In the event that one of them fails, you can use the second drive to boot up and then put in a new drive and rebuild the RAID. Note that you cannot do that with RAID 0 if one of the drives fails. So for RAID 1, if you have two 20GB drives:

20GB + 20GB = 20GB

Your OS sees a 20GB drive. Note you must again use matched drive sizes.

RAID 0+1 combines striping with mirroring, and you need a minimum of 4 drives for that configuration, and they must be matched drive sizes (you can use mismatched drives, but the larger drives will lose whatever extra capacity they have so they can stripe/mirror the other drives)

So JBOD allows you to maintain the full capacity of all the drives you have together into one disk for the OS to see. It is not very secure should a drive fail, and there is absolutely no performance benefit from it.
 
I have also used JBOD used quite frequently to refer to any external drive enclsure.
 
Well I have a Promise SX4000 Lite, with 4 Maxtor 250 drives setup as JBOD and windows XP
sees them all individually...

manydisks.jpg
 
UICompE02 said:
I have also used JBOD used quite frequently to refer to any external drive enclsure.
Click to expand...


We use JBOD at work to refer to an enclosure that doesn't have a raid controller.
 
You must log in or register to reply here.
Back
Top