Hello Folks,
Question for people who are using sata connections for their farming drives? How are you wiring up your power connections?
I’ve been having a difficult time nailing down an issue ever since I got my 17th farming drive connected. I now have 20 farming drives, and the issue has gotten progressively worse the more drives I have. Basically certain drives will go offline randomly every few hours, maybe coinciding with when a new plot is being written to the farm, but not necessarily the drive that has a plot being written to it. Another drive might fail. But maybe usually they’re using the same power cable, but definitely not always. Usually I can go into disk mngt and tell it to rescan the drives and they’ll come back online. The only exception to this seems to be the rare occasion when 3 or more drives go offline, and then I’ve got to reboot it for those drives to come back.
At first I thought there was something wrong with the 17th drive, but as time has gone by, I’ve moved drives around, wired the sata data to different sata controllers, swapped power supply cables, swapped power splitting cables, changed the port on the power supply it’s connected to. Everything just seems random with no clear pattern except for 1. The drives that go offline are almost always Seagate Exos drives. Not everytime, but usually. But I don’t think there is anything wrong with the drives in question.
From shucking Western Digital Elements and Easystore drives I have a lot of those USB to sata boards and power supply’s that came with them. I can connect the drives that seem to frequently have problems to one of these boards, and they will run rock solid as usb drives for months with zero problems. Doing this with at least 2 drives at a time, that are frequent offenders is the only thing that keeps things stable in the machine. If the drives were faulty I have a hard time believing they would behave perfectly connected via usb. But they do.
Is there a rule of thumb when it comes to the number of sata devices you can have on a power supply? How about number of sata devices you can have connected to a single power supply cable? Like for example, I’m using molex to 5 sata power splitters, up to 3 per power cable. So possibly up to 15 drives could be connected to a single power supply cable. They’re not currently, wired up like this, but that was my plan as the farm grew. Is that too much? It’s an 850 watt power supply, which with no power hungry video card in the machine, I thought 850 was overkill when I purchased it. But wanted overkill rather than have to deal with power problems later…
My next step was to reluctantly swap out the power supply, maybe go up to 1200 watt but I really don’t want to do that if it won’t fix the problem. Aside from this issue, computer has been rock solid, so I think the power supply is working well. Am I doing something fundamentally wrong?