IBM DCS3860, Installation, User'S, And Maintenance Manual

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b. Disconnect the right cable chain mounting bracket from the drive drawer.
Hold the orange handle (See Figure 64), and pull the mounting bracket out
of the drive enclosure.
c. Disconnect the left cable chain mounting bracket from the midplane. Hold
the orange handle and pull the mounting bracket out of the storage
expansion enclosure.
d.
Disconnect the left cable chain mounting bracket from the drive drawer.
Hold the orange handle and pull the mounting bracket out of the storage
expansion enclosure.
8. Remove the drive drawers by completing the following steps.
CAUTION:
Hold disk drawers with both hands on each side between the second and
third row of drives. Place the removed disk drawer on a flat and static-free
surface. Do not stack disk drawers or hold the disk drawer such that it
would to bend. The disk drawers fully loaded with 3.5” drives might be
heavy for one person, so we recommend that more than one personnel
should move the disk drawer. Do not use excessive force while removing
the boards. You might damage the disk drawer or the disk drawer guides.
Orange circle
Figure 63. Vertical mounting bracket that connects to the midplane
Orange circle
Figure 64. Horizontal mounting bracket that connects to the drive drawer
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide