My PiNAS project part 40, case redesign and SSD addition

All are enterprise 12Gb/s SAS SSDs

2x 800GB SSDs, mirrored as a ZFS special vdev.
The vdev stores metadata and small files. Most of my files are large, so it's mostly for metadata.

1x 1.6TB SSD assigned as L2ARC, i.e. read cache.

Initial testing showed a noticable latency improvement when crawling directories.

Trying my best to work with this footprint and still get all the cables routed neatly >.>

There will be one final revision after this, for external SAS port and power input.

Positioning the 2 front SSDs was tricky with the Pi power cable in the way. I may try a right angle USB-c adapter if it makes cable mgmt easier but for now this works.
I would have liked to place the rear SSD where the air flows through the fins, but I just don't have enough room. The good news is, during testing it didn't take much to keep all 3 drives in the low 30c's with a single silent 80mm fan.

Speaking of fans. I updated their placement to focus on the hot spots. This is the left half, but the right half was also updated.
I'll be using Noctua 40x20mm

The cards aren't fastened here, just a placement test

@StackMySwitchUp

Next major addition will be a power sequencing circuit for the PCIe cards. I'm waiting on the mouser order.
The PCIe lane error counter only goes up during reboots, and never during normal operation. I suspect it may have something to do with the 12v rail not being controlled by the pi so the cards don't power cycle with the pi.

Cat tax