Owners Manual
Table Of Contents
- Dell EMC PowerVault ME4 Series Storage System Owner’s Manual
- Contents
- Storage system hardware
- Troubleshooting and problem solving
- Module removal and replacement
- ESD precautions
- Dealing with hardware faults
- Firmware updates
- Continuous operation during replacement
- Shutting down attached hosts
- Shutting down a controller module
- Verifying component failure
- Customer-replaceable units (CRUs)
- Attach or remove the front bezel of a 2U enclosure
- Replacing a drive carrier module in a 2U enclosure
- Replacing a DDIC in a 5U enclosure
- Replacing a controller module or IOM in a 2U or 5U enclosure
- Replacing a power supply unit (PSU) in a 5U enclosure
- Replacing a fan cooling module (FCM) in a 5U enclosure
- Replacing a power cooling module (PCM) in a 2U enclosure
- Completing the component installation process
- Verifying component operation
- Performing updates in PowerVault Manager after replacing an FC or SAS HBA
- Events and event messages
- Connecting to the CLI port using a serial cable
- Technical specifications
- Standards and regulations
Table 27. Event descriptions and recommended actions (continued)
Number Severity Description/Recommended actions
● If the snapshot space limit policy is set to notify only, you should immediately take steps to
reduce snapshot space usage or add storage capacity.
● If the snapshot space policy is set to delete, the system will reduce snapshot space
automatically, or log event 573 if no snapshots can be deleted.
Warning Allocated snapshot space exceeded the high snapshot space threshold.
The high threshold setting indicates that the pool is nearly out of snapshot space. The threshold
settings are intended to indicate that the pool is using a significant portion of configured
snapshot space and should be monitored. If the storage usage drops below any threshold, event
572 is logged.
Recommended actions:
● Reduce the snapshot space usage by deleting snapshots that are no longer needed.
Info. Allocated snapshot space exceeded either the low or middle snapshot space threshold.
The threshold settings are intended to indicate that the pool is using a significant portion of
configured snapshot space and should be monitored. If the storage usage drops below any
threshold, event 572 is logged.
Recommended actions:
● Reduce the snapshot space usage by deleting snapshots that are no longer needed.
572 Info. The indicated virtual pool has dropped below one of its snapshot space thresholds.
This event indicates that a condition reported by event 571 is no longer applicable.
Recommended actions:
● No action is required.
573 Warning Allocated snapshot space for a virtual pool cannot be reduced because no snapshots are
deletable.
Allocated snapshots cannot be automatically deleted if their retention priority is set to never-
delete. Snapshots must also be at the leaf end of a snapshot tree in order to be considered
deletable. This event is logged when no snapshots in the pool pass these constraints.
Recommended actions:
● Manually delete snapshots to reduce allocated snapshot space.
574 Info. A peer connection was created.
Recommended actions:
● No action is required.
575 Info. A peer connection was deleted.
Recommended actions:
● No action is required.
576 Info. A replication set was created, or a replication set failed to be created.
Recommended actions:
● No action is required.
577 Error A replication set failed to be deleted.
Recommended actions:
● No action is required.
Info. A replication set was deleted.
Recommended actions:
● No action is required.
Events and event messages 137