Hi,

 

I currently have 2 x 256GB Samsung NVME and during black Friday I bought 2 x 2TB Samsung NVME and I am looking into upgrading the drives in my cache pool.

 

As of now, I have the following share settings

• Prefer: Cache
  • appdata (~42GB)
  • domains (empty afaik)
  • system (empty afaik)
• Yes: Cache
  • isos (empty afaik)
  • Development (~10GB of source code)

I also have my docker.img size in the settings set to be 150GB for a rough total of 200GB of space used on my 256GB cache pool.

 

I found this from the Unraid 6 FAQ and this and it seems straight forward enough but it only talks about replacing one of the drives. The issue is that I have 2 NVME slots on my board so I have to do a swap. Is there any issues with the following procedure?

• Conditions
  • Slot #1 - Samsung 256GB
  • Slot #2 - Samsung 256GB
  • Out of build - Samsung 2TB 
  • Out of build - Samsung 2TB 

1. Stop array 
2. Unassign Slot #1's Samsung 256GB (do NOT change cache pool size)
3. Start the array (after checking the "I'm sure" box next to the start array button)
4. Wait until the "Stop Array" button is available
5. Shutdown computer and move a Samsung 2TB into Slot#1 and take the Slot#1 Samsung 256GB out of build
6. Turn on UnraidOS and assign Slot #1's Samsung 2TB hard drive to the cache pool
7. Start the array (this will then copy the data from the other cache drive to the new 2TB drive?)
8. Wait until the "Stop Array" button is available 

Repeat the above steps but replace Slot#1 with Slot#2?

 

Questions

• Will the above procedures work to upgrade?
• When I unassign one of the drives and then insert the new 2TB drive, whatever data is on the current active cache drive will be copied over onto the new 2TB drive?
• Are the cache pool drives mirrored entirely, or is the data striped? Since I store data that I want to persist on the cache drive (appdata and Development) but be fast reading/writing since it changes a lot, is this the correct way to do it?

It will work assuming the pool is default RAID1, and you can start with step 5.