User`s guide

Figure 5–6 SBB Warm Swap
CXO-3611B-PH
While the OCP LEDs are flashing their alternating pattern, the shelf SBB
LEDs for all disk SBBs on that port also flash. (Although tape drives do not
always have LEDs, remove them at this time if you are using warm swap
to remove a tape drive. Some tape drives cannot be warm swapped.) The
interval between the quiesce request and the actual halting of I/O can vary
from zero seconds to 1 minute, depending on the load, device type, and cache
status.
After the device is removed, its port LED remains solidly lit until it is either
replaced or deleted from the controller’s configuration.
5.9.1.2 Disk SBB Warm Swap Replacement
Use a replacement device of the same type as the removed device. Otherwise,
subsystem failures may occur. Disk SBBs can be safely replaced (inserted) using
the following process:
1. Press and hold the port button for the disk drive you wish to replace.
Continue holding the button in until all amber OCP LEDs light. This action
starts the quiesce process.
Note
Only one port may be quiesced at a time.
If the button is not held in long enough, or multiple buttons are pushed
in quick succession, all button pushes are ignored and the port is not
quiesced. You must press the button again to quiesce the port.
The selected port LED flashes for 10 seconds. All other port LEDs turn off.
2. Wait until the chosen port LED flashes alternately with the other port
LEDs (this indicates I/O has stopped). This alternating pattern flashes
for approximately 30 seconds. The interval between the quiesce request and
the actual halting of I/O can vary from zero seconds to 1 minute, depending
on the load and the type or device.
3. Replace (insert) the disk SBB during this 30 second interval. Use both hands
to push it into the shelf. You should hear the mounting tabs snap into place.
Controller Operations 5–29