Extending cache pool

[Kash76]

Good evening everyone!

 

I have 2 x 275GB Crucial SSD drives for my cache pool and I'm running short on space. I have a 128GB sitting at my desk and am wondering if I can add it to the pool? I assume that I will not get the full 128GB but will it allocate maybe half of that?

 

Thanks for the guidance, I'd rather not have to purchase two new 512GB or larger. 

[JorgeB]

2 hours ago, Kash76 said:

I have a 128GB sitting at my desk and am wondering if I can add it to the pool?

You can but you'll only get an extra 64GB if using the default raid1.

[Kash76]

You can but you'll only get an extra 64GB if using the default raid1.

Thanks. I'll assume the same if I bite on a 512, I'd get half or less because of the increase?

Sent from my ONEPLUS A5010 using Tapatalk

[JorgeB]

You'll get an 256GB extension, you can use this to calculate what you'll get:

 

http://carfax.org.uk/btrfs-usage/