IBM F50 RS/6000 7025 - Manual (Page 232)

To remove a drive from bank C, D, or E, do the following steps:
1. If you have not already done so, remove the covers as described in “Removing
the Front Covers Only” on page 5-6.
2. Locate the drive you want to remove.
3. Ensure that you have selected the correct drive.
4. Press the spin down button on the drive carrier to remove power from the drive.
The green LED should flash.
5. Unlock the drive by turning the carrier latch 90 degrees clockwise to the open
position.
5-88 IBM RS/6000 7025 F50 Series User's Guide