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NVme cache disk with Dell R620
I have a Dell R620 server, to improve the I/O performance (and latency) of my SAS 15K disks I want to connect an NVme disk with a pcie3 adapter and then use it as a cache disk.
How can I do that? because as I know, the raid controller can't recognize disk through pcie3.
OS: Centos 7.7
Lvmcache/dm-cache, bcache, etc?
Remember you'll want to either run in writethrough, or RAID1 your nvme.