I second this.
I have three large disk shelves, one made from a J23 CSA connected to an perc h730 in HBA mode, one made from a super micro connected to a LSI HBA card, and one that uses a repurposed DATTO unit with its original raid card flashed into IT mode.
They are all extremely reliable, handling dozens of drives and I use only ZFS for all of my bulk storage. The best part is how much faster I can replace a dead drive with ZFS than I could with any raid 5 anything. Also, ZFS is flexible enough that you can put ssds in to use for journaling and slog.
I have one machine with 192gb of RAM and I just use the ramdisk for slog. It's all streaming media so if it crashes only the buffered streams are lost, and this way I'm not burning holes through SSDs quite so quickly.
Yep that's pretty fucking horrific.
I think that's case closed.
If we're done here can you turn off the lights on your way out?