| Event Id | 858 |
| Event Source | Dell PowerVault |
| Description | Controller entered Conservative Cache mode |
| More Information | According to dell: Cause: Enclosure Management is offline. Partner controller disabled (held in reset) or failed. BBU battery is low. Expand Capacity or Add Virtual Disk operation is in progress. Out-of-limit or over temperature. Non-redundant power. Power supply failed Resolution: If Enclosure Management has been enabled, check to see whether one or more LS modules has failed. LS modules are cards installed in slots at the front of the enclosure. Each LS module has an SES processor that monitors environmental functions and a Loop Redundancy Circuit (LRC) function, which maintains the viability of the Fibre Channel loop. See the Dell PowerVault 660F and 224F Storage Systems Installation and Troubleshooting Guide for troubleshooting tips. If the controller entered Conservative Cache mode because of user's intended action, proceed per user's intent. When finished, right-click the controller and select either Enable Partner controller or Enable BBU to exit Conservative Cache mode. If the BBU battery is low, recondition the battery. If the battery needs to be replaced, see the Dell PowerVault 660F and 224F Storage Systems Service Manual. Then access the Array Manager console, and in the tree view, click to expand the Arrays storage object, right-click the PV660F Subsystem storage object to bring up the context menu, and select Rescan. This action will update the controller. If there is an Expand Capacity or Add Virtual Disk operation in progress, wait until this activity has finished. Then access the Array Manager console, and in the tree view, click to expand the Arrays storage object, right-click the PV660F Subsystem storage object to bring up the context menu, and select Rescan. This action will update the controller. |
| Reference Links | event id:858 and source: Dell PowerVault |
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