I have an external 3TB FW800 drive set up to be my Time Machine drive. I noticed some unusually high drive activity, and opened up Time Machine to see if it was backing up. Nope, TM showed previous backup was done about 30-40 minutes prior, and there was no activity in the app.
So to be overly cautious, I popped open Disk Utility, selected the external drive, and started a "Verify Disk." I've done this hundreds of times before on this and other drives…not talking about deep, hardcore tech support here. Simple stuff.
Well, for some reason, it's taking a VERY long time. It's been moving along, progressing through the various steps, but after 30 minutes, it still estimates another 1hr 35mins to go. It has gotten to "Checking multi-linked directories" and been sitting there for about 10-15 mins.
The drive has worked flawlessly for over a year, and is about 85% full (hasn't started deleting old backups though), but I don't ever remember it taking THIS long to verify.
Is there something about TM volumes that makes Verify Disk take longer, or should I be concerned about the hardware? What could be the reason for drive activity if TM wasn't backing up?