Concurrent maintenance is the ability to process I/O operations
to a controller while simultaneously doing maintenance on it.
Important: An EMC field engineer must complete
all maintenance procedures.
The EMC CLARiiON FC series and thesystem allow concurrent replacement of the following components:
- Disk drives
- Controller fans (fans must be replaced within 2 minutes or controllers are shut down)
- Disk enclosure fans (fans must be replaced within 2 minutes or controllers are shut down)
- Controller (you must first disable the service processor cache)
- Fibre Channel Bypass cards (LCC)
- Power supplies (you must first remove
fans)
- Uninterruptible power supply battery (SPS)
EMC CLARiiON FC devices require that the I/O is quiesced during code update. Therefore, the
system does not support
concurrent update of the FC controller
code.
The EMC CLARiiON CX series and thesystem
allow concurrent replacement of the following components:
- Disk drives
- Controller (service processor or drawer controller)
- Power/cooling modules (modules must be replaced within 2 minutes or controllers are shut
down)
- Uninterruptible power supply battery (SPS)
The system and EMC CLARiiON CX devices support concurrent code update of the CX controllers.
Notes: - EMC CLARiiON procedures for concurrent update must be followed in all cases.
- Use the Data In Place Update feature in the
CX series to update from one model to another
(for example, from the CX200 to the CX600) with no data loss or migration required. This operation
is not a concurrent operation.