Hypervisor 1RU 2024
This is the build about the hypervisor in 2024.
This is a 1 RU server with fast local SSD, aprox 18TB of storage.
Disk Layout
Boot disk = 128g mirror ZFS
ZFS storage
5 vdev's mirrored of the SAS disks 2 mirror NVME 256g partition, but dedicated on the whole disk. This can grow. optional log and l2arc on the boot NVME's
Backplane
The onboard backplane is a BPN-SAS3-116A-N2 which has 8 SAS disks and then 2 NVME or SAS. Howerver this last thing is not true if you want to run 10 SAS disks. The right most NVME/SAS ports are called "SAS2" ports on the backplane, but are really SATA ports, and connected to the onboard SATA. As this is a backplane only, not an expander each physical SAS port from the controller is connected to one SAS drive. Since the included controller only had 8 ports, a 16 port controller is used.
NVME name spaces
The NVME come setup as 1.88T disks:
tnvmcap : 1,880,375,648,256 unvmcap : 375,648,256
I suspect this is a 2.0 TiB (2,199,023,255,552b) provisioned down in the controller or about 85%. moving this to a 1.56TB disk will under provision this and make it perform better in the event we use it as log or write intensive.
Reference material
