Continuing our series LVM2 plus cache device:
- single hard disk with a SSD device SSD cache device to a hard disk drive using LVM, which uses SSD drive as a cache device to a single hard drive.
- Mirror LVM2 device with a SSD device for cache – SSD cache device to a software raid using LVM2 – software mirror across two devices with an additional SSD cache device over the mirror.
And now we show you how to do software RAID5 with SSD cache nvme using LVM2.
The goal:
Caching RAID5 consisting of three 8T hard drives with a single 1T NVME SSD drive. Caching reads, i.e. the write-through is enabled ().
Our setup:
- 1 NVME SSD disk Samsung 1T. It will be used for writethrough cache device (you may use writeback, too, you do not care for the data if the cache device fails)!
- 3 Hard disk drive 8T grouped in RAID5 for redundancy.
