I came across
this post and it suggests that a G-360 would be enough. I'd prefer modular/semi-modular of course but it's not a deal breaker. I only intend to use 4 drives, as long the SATA cables reach the drives which I'm confident they will, it would be fine.
I haven't seen the case in the flesh but it has 400 + 150 mm and 500 + 150 mm SATA cables, the case dimensions are 250 x 210 x 374 mm so I'm assuming it will fit. I'll also need one molex connector for the fan controller which it has.
After saying all that, is it worth replacing a G-550 with a G-360 purely for the efficiency? I'm thinking probably not. I've already got the G-550 and will find a use for it one day so buying a G-360 is no issue if it's worth it.
I've also been reading up mirroring versus RAIDZ2 with 4 disks. I'm leaning towards RAIDZ2 to avoid the problem of if 2 drives in the mirror die I've lost the pool.
I've read that re-silvering with RAIDZ2 taxes the disks much more than mirroring. How much of a concern is this? If I was to install another disk for 5 disks total in RAIDZ2, does this lessen how much the disks are taxed?
If I was to put another disk in, a G-360 wouldn't be suitable any more.