H205201: Environmental Service Module (ESM) will reboot after 994 days of continuous up-time - IBM DS4000 EXP100, DS4000 EXP700, DS4000 EXP710
RETAIN tip: H205201
After 994 days of continuous up-time, an Environmental Service Module (ESM) will reboot. Depending on the specifics of your configuration, there is a very slight chance that two ESMs could reboot at the same time causing a temporary loss of access to your data.
The system is configured with one or more of the following IBM Options:
This tip is not system specific.
This tip is not software specific.
Plan a maintenance window to reboot the ESMs before they reach 994 days of continuous up-time. This can be performed in a few different ways. Here are two examples:
Due to a hardware limitation in the up-time counter of the affected storage enclosures, the ESMs must reboot after 994 days of up-time. There is no fix for this issue.
Unfortunately, there is no reliable technical method to determine exactly how long it has been since the last time the ESMs rebooted.
Applicable countries and regions
Document id: MIGR-5089599