bcheary Loc: Jacksonville, FL

JD750 Loc: SoCal

Ideally one has more than one backup volume, so if one volume shows signs of physically failing it gets retired and replaced with a new one. There no need to recover data from the failing volume, since the data is intact on the redundant volume and can be easily copied to the new unit.

Leicaflex Loc: Cymru

This is a good article and worth knowing.
I have booked mark it, hope I never need it.
Thank you for the link.

JaiGieEse Loc: Foxworth, MS

Just a mention of a problem I've encountered. A while back, I bought a used 2012 MacBook Pro. The seller had removed the internal SuperDrive (CD/DVD read and write) and replaced it with a two TB hard drive. All was well for several months, until my SMARTReporter watchdog utility told me that the drive would soon fail. A check of the drive with TechTool Pro confirmed this. So. I purchased a new two TB internal drive and swapped that for the failing drive. Once the install was complete, I placed the failing drive into an external enclosure and copied my files from that drive to the new one. After the copy was done, it opened, but my MacBook reported some several errors. So I wiped the new drive and then restored it from a Time Machine backup. This time, all was well. Drive functions normally, no errors, and all utility checks come back clean. Goes to prove the need for good backups. Oh, and when my new drive checked out, I attempted to reformat the failing drive in its external enclosure, thinking I'd be able to get a little more use out of it for temporary and less important items. The reformat failed. The bad drive was now a paperweight. Good to have watchdog and testing utilities, y'know?