Always had issues with my hard drive. Apple replaced the connector cable at least 3 times but never changed the actual hard drive. My problems have been solved since I got a new hard drive. Would recommend.

When it comes to performance, computers are only as fast as the slowest component. In my case the hard drive was a big bottleneck. Since installing the crucial drive boot up is way quicker, application startup is faster too.

Installed this drive in an OWC external array (using a newertech AdaptaDrive) and connected to my MacPro via Thunderbolt 2. Mechanical installation was simple. My MacPro immediately recognized it and initialization via the Mac OS disk utility was simple.