Well, if they remove the drives outside your iMac for data recovery, please ensure you are aware and that the techs verify that you have a Fusion Drive. A Fusion Drive on an iMac is a combination of a large capacity HDD and lower capacity SSD. Both those devices are needed to have a complete file recovery. Can check for all details by serial number lookup at everymac.com. Watch video for full data recovery description

How to recover data from a RAID0 WD My Book Duo with x2 8TB WD Red Helium Hard Drives

Performing data recovery on this RAID0 WD My Book Duo with two 8TB WD Red Helium model hard disk drives was very tricky. Why?

Why does a damaged hard disk drive not spin?

An HDD not spinning could be caused by a couple of failures, most times could be mechanically related, while some times electronically related. This article explains when a hard drive does not spin as result of PCB electronic failure.

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