Primocache with Drivepool and SSD Optimizer
Posted: Tue Dec 12, 2023 12:55 am
Apologize if this is a dumb question but just started trying Primocache out as I have a couple spare external NVME drives I can use (running on a USB 5gbps interface). I read through the documentation but its still kinda unclear to me as I haven't been using it very long.
I've been using Drivepool on a home server for years (movies etc). I use the SSD optimizer plugin which causes the files to first land on one of a couple of 2.5" SSDs before later being transferred to one of the HDDs for long term storage.
I set two Primocache tasks: L1 only for the SSDs and L2 for the HDDs using the external nvme,
Is there any benefit to using a L2 external NVME for both read and writing? I don't see how writing would benefit speed as the files already go from one of my SSDs to a HDD and the HDDs don't really swap files between themselves. The HDD drive speed being the rate limited step.
My other question is, am I able to use two NVME drives for the L2 cache? One for read and one for write so a drive doesn't get slowed down doing R/W at the same time? Edit: Only appears possible to use one L2 per task.
Finally I'm awaiting another HDD drive to set up Snapraid. Would Primo interfer with syncing?
Thanks!
Edited for clarity
I've been using Drivepool on a home server for years (movies etc). I use the SSD optimizer plugin which causes the files to first land on one of a couple of 2.5" SSDs before later being transferred to one of the HDDs for long term storage.
I set two Primocache tasks: L1 only for the SSDs and L2 for the HDDs using the external nvme,
Is there any benefit to using a L2 external NVME for both read and writing? I don't see how writing would benefit speed as the files already go from one of my SSDs to a HDD and the HDDs don't really swap files between themselves. The HDD drive speed being the rate limited step.
My other question is, am I able to use two NVME drives for the L2 cache? One for read and one for write so a drive doesn't get slowed down doing R/W at the same time? Edit: Only appears possible to use one L2 per task.
Finally I'm awaiting another HDD drive to set up Snapraid. Would Primo interfer with syncing?
Thanks!
Edited for clarity