Is SSD Read Cache setup really beneficial?
Looking to do a similar setup for similar use case as posted here, except I have a slightly different Bay 1 to 4 setup:
Bay 1: Ironwolf Pro 10TB (Storage Pool 1)
Bay 2: Ironwolf Pro 10TB (Storage Pool 1)
Bay 3: Ironwolf Pro 10TB (Storage Pool 1)
Bay 4: Ironwolf Pro 10TB (Storage Pool 1)
NVME Bay1: Samsung Evo Plus 1TB SSD (Storage Pool 2)
NVME Bay2: Samsung Evo Plus 1TB SSD (Read Only Cache for Storage Pool 1)
RAID Config: RAID 5 or possibly RAID 10 on Storage Pool 1 and Basic on Storage Pool 2
Is the 1TB SSD in NVME Bay2, which is setup as a Read Only Cache for Storage Pool 1, is this really that beneficial?
The recommendation/reason to instead setup the 2 1TB SSDs as a RAID 1 Storage Pool 2 got downvoted, but I think it makes more sense for my similar use case, where additional redundancy would outweigh any seemingly small benefits of a Read Only Cache SSD setup.
What do you all recommend?
Thanks