dvl@
Developer
I have four 1TB storage devices and I'm planning to combine them into a 2TB ZFS array. I have scavenged these devices from hosts which are being decommissioned.
The devices, as seen on FreeBSD 13.2, are:
The NVMe sticks are on two PCIe slots in a Dell R730. The two SSDs are in the drive bays at the front of the chassis.
Ignore 150.000MB/s transfers - that's an mrsas driver issue - it's false reporting - a hardcoded value.
My idea: mirror one of the NVMe with an SSD. Why? Diversity. Same size, different manufacturer.
Yes, they will have different latency. What's the downside? I'm sure it will still work well. This host is in my basement homelab. Any comments?
Thanks.
The devices, as seen on FreeBSD 13.2, are:
Code:
nvd0: <Samsung SSD 980 PRO with Heatsink 1TB> NVMe namespace
nvd0: 953869MB (1953525168 512 byte sectors)
nvd1: <Samsung SSD 980 PRO with Heatsink 1TB> NVMe namespace
nvd1: 953869MB (1953525168 512 byte sectors)
da12 at mrsas0 bus 1 scbus1 target 12 lun 0
da12: <ATA Samsung SSD 860 2B6Q> Fixed Direct Access SPC-4 SCSI device
da12: Serial Number [redacted]
da12: 150.000MB/s transfers
da12: 953869MB (1953525168 512 byte sectors)
da13 at mrsas0 bus 1 scbus1 target 13 lun 0
da13: <ATA Samsung SSD 860 2B6Q> Fixed Direct Access SPC-4 SCSI device
da13: Serial Number [redacted]
da13: 150.000MB/s transfers
da13: 953869MB (1953525168 512 byte sectors)
The NVMe sticks are on two PCIe slots in a Dell R730. The two SSDs are in the drive bays at the front of the chassis.
Ignore 150.000MB/s transfers - that's an mrsas driver issue - it's false reporting - a hardcoded value.
My idea: mirror one of the NVMe with an SSD. Why? Diversity. Same size, different manufacturer.
Yes, they will have different latency. What's the downside? I'm sure it will still work well. This host is in my basement homelab. Any comments?
Thanks.