Question Can Multiple SSD's Be Used in a Windows 11 JBOD Without Harming Life Span?

May 14, 2023
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So I picked up two NVME SSD's at 2TB capacity for about a third of the price of a 4TB. I was wondering if I can put them in JBOD in Windows 11 and if the OS will properly divide the storage to maximize the life span of the NVME SSD's? The issue is that if you overfill a SSD you can shorten the lifespan of that SSD by overuse of available bits to burn as changes are made. Too small a number of bits are used too often. If the JBOD will assign storage to balance the usage of each SSD then expected life would not change as I understand it.
 

USAFRet

Titan
Moderator
1. Why the JBOD config? Just have them as individual drives would probably be better.

2. If you must, adjust the usable partition sizes accordingly. On each, make a partition of about 80% of the actual space. For a 2TB drive, make partitinos of about 1.5TB each. Leave the rest unformatted and unavailable to the OS.

3. And if you're thinking of using this as the OS drive, don't. That is a monstrously bad idea.
 
May 14, 2023
3
0
10
1. Why the JBOD config? Just have them as individual drives would probably be better.

2. If you must, adjust the usable partition sizes accordingly. On each, make a partition of about 80% of the actual space. For a 2TB drive, make partitinos of about 1.5TB each. Leave the rest unformatted and unavailable to the OS.

3. And if you're thinking of using this as the OS drive, don't. That is a monstrously bad idea.
We have about 2.2TB used for a special data drive. Wanted the speed of a 4TB, so thought we would jbod two 2TB NVME's that are far cheaper. The current boot drive is an NVME that won't change, more than enough capacity there. So will have a boot drive with all the OS stuff and some mech drives and these two 2TB NVME drives together. We see the data needs growing up to 3TB. So 4TB gives us 25% free on the JBOD.

So I have searched quite a bit on JBOD drives under Windows and didn't see much on the downside. What is your info on this? If you have the time.
 

USAFRet

Titan
Moderator
We have about 2.2TB used for a special data drive. Wanted the speed of a 4TB, so thought we would jbod two 2TB NVME's that are far cheaper. The current boot drive is an NVME that won't change, more than enough capacity there. So will have a boot drive with all the OS stuff and some mech drives and these two 2TB NVME drives together. We see the data needs growing up to 3TB. So 4TB gives us 25% free on the JBOD.

So I have searched quite a bit on JBOD drives under Windows and didn't see much on the downside. What is your info on this? If you have the time.
3TB consumed out of a 4TB JBOD array does not mean "25% free".
Each drive is to be considered individually, sort of.

The JBOD concept fills up the drive in sequence.
For instance, 51% consumed space in the 4TB array just means that the first one is 100% full, and a little bit on the second drive.

I understand the 'saving money' thing. But for a specific use like this, you have to be really careful.

See my #2 above. That will leave "free space", that the JBOD array can't touch.
 
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May 14, 2023
3
0
10
3TB consumed out of a 4TB JBOD array does not mean "25% free".
Each drive is to be considered individually, sort of.

The JBOD concept fills up the drive in sequence.
For instance, 51% consumed space in the 4TB array just means that the first one is 100% full, and a little bit on the second drive.

I understand the 'saving money' thing. But for a specific use like this, you have to be really careful.

See my #2 above. That will leave "free space", that the JBOD array can't touch.
The filled sequentially is what I wanted to know, thanks. Yeah, actually set it up as you stated in #2. Transferring data now.