I've installed MaxPower eSata 6G PCIe2.0 card into my Xserve2,1
I have a VANTEC NexStar Hard Drive Dock connected to this.
I have 3 x 3TB HDD's. I copy files to this one HDD at a time and rotate the drives every week for Offsite backups.
Issue is: HDD works fine - recognised in Disk Utility, mounts automatically.
When swapping drives, I unmount current drive and insert the next drive. This is NOT recognised - not mounted in Finder, doesn't show up in Disk Utility, can't find any reference to it in System Profiler.
I then unplug the eSATA cable from the first eSATA port into the second eSATA port - this works fine and HDD mounts automatically. Next week, try the same process, but now neither eSATA port works.
Restart and both work fine again, so it appears that a HDD can only be used on one eSATA port per restart. I don't want to restart my server every second time I swap a drive.
I have asked the company where I've bought the eSATA card from and they suggested a PRAM reset which I've done and which hasn't solved anything. Issue persists.
I have also disconnected eSATA card and reseated. Issue persists, plus it's probably a software issue rather than a hardware issue.
Tried with different hard drives - issue persists.
Tried with different HDD docks (although same model) - issue persists.
Had the issue for months and keen to resolve.
Any ideas? Tips on how to troubleshoot? Which CLI commands may give me relevant troubleshooting information?