My PiNAS project, part 25, 1U case test print and fitment

With the backplane case complete, it's back to the server part of the build, i.e. the pi5 and add-on cards.

tags:
@StackMySwitchUp

Left to right: SAS external port, rpi5, PCIe switch (PEX8724), SAS ctrl (9400i), 10GbE NIC (X710)
Missing: Fans, slot adpt standoffs, power cabling, and the internal SAS cable. I plan to design conduits for the final print.
Speed testing here: https://imgur.com/gallery/ibycbb4
Preview:
Samba network file sharing:
Samba upload from array: 435 MB/s (3.48 Gb/s)
Samba download to array: 422 MB/s (3.37 Gb/s)
Samba upload from ram to ssd: 604 MB/s (4.83 Gb/s)
Samba download to ram from ssd: 665 MB/s (5.32 Gb/s)
iperf3 upload: 6.44Gb/s
iperf3 download: 7.26Gb/s

It was tough finding an m.2 adapter that didn't make the pi too tall for 1U. I ended up going with a bottom mounted m.2 adapter and an m.2 to Oculink SFF-8612 adapter, which is the thinnest connector that supports PCIe. The slot adapters use the slightly larger u.2 SFF-8643 standard, so the cable from the Pi to the PCIe switch is a Oculink SFF-8612 to u.2 SFF-8643

PiNAS case is split in 2, attached mechanically via dovetail cutouts, and then the seams are chemically welded.

No lid yet, but it will cover the gap above the Pi when installed. The clearance was so small that I just left the cutout open rather than printing the thin bridge

Inside surface is coated in MG Chemicals "Total Ground" conductive paint. It was brushed on so it won't win a beauty contest, but it does its job of stopping static buildup and providing a case ground. I plan to get the spray next time.

SAS backplane case blown up