Quantum StorNext QD7000 Manual page 14

c. If the tray is powered on, ensure that the left fan goes to its maximum speed.
Attention: Possible equipment damage due to overheating – If the tray is powered on, do not remove both fans at
the same time. Otherwise, the equipment might overheat.
3. Determine which drive drawer you need to replace, as follows:
• If the power is on, the blue Service Action Allowed LED indicates the cable chain you need to disconnect.
• If the power is off, you must manually determine which of the five cable chains to disconnect.
The figure shows the right side of the drive tray with the fan canister removed. With the fan canister removed, you can see
the five cable chains and the vertical and horizontal connectors for each drawer.
1 Cable chain
2 Vertical connector (connected to the midplane)
3 Horizontal connector (connected to the drive drawer)
The top cable chain is attached to drive drawer 1. The bottom cable chain is attached to drive drawer 5.
4. Follow these steps to disconnect any of the right cable chains from its corresponding vertical bracket.
Possible hardware damage — If the drive tray is powered on, the cable chain is energized until both ends are
Attention:
unplugged. To avoid shorting out the equipment, do not allow the unplugged cable chain connector to touch the metal
chassis if the other end of the cable chain is still plugged in.
a. Using a flashlight, locate the orange ring on the end of the cable chain that is connected to the vertical bracket in the
enclosure.
6 Replacing a Drive Drawer in a 60-Drive Tray