- Notes, cautions, and warnings
- Preface
- Prepare for hardware replacement
- DM5500 customer replaceable unit procedures
- Expansion enclosure customer replaceable unit procedures
The expansion enclosure supports two redundant EMMs. If an EMM fails, the enclosure will run on a single EMM until the redundancy is restored. You can replace one EMM without powering off the enclosure.
EMM replacement may be required if the Data Manager Appliance UI or the EMM LED status shows a failure. EMM replacement is also required to replace a failed fan.