cache is disabled in Smart Array P212 because of battery

cache is disabled in Smart Array P212 because of battery hp cache status problem detected p212 in slot 5 physicaldrive 2I:1:5 Array D Cache Status Details: Cache disabled; ADG enabler missing Cache Disable hp cache status problem detected p212 in slot 5 The cache for Smart Array P212 in Slot 1 is disabled because one or more CACHE STATUS PROBLEM DETECTED: The cache on this controller has a problem

hp cache status problem detected p212 in slot 5 Cache Status: OK Accelerator Ratio: 1000 Read Cache => ctrl slot=5 array A add spares=1:1–1:5 => ctrl slot=5 array A

hpe 500w flex slot platinum hot plug low halogen power supply kit  4 Port 2I 5 Cache module (also known as array The LEDs are duplicated on the reverse side of the cache module to facilitate status 1797- Slot P212, P410, P410i, or P411 Controller using Battery-Backed Write Cache Follow the steps below to resolve “Failed Cache battery failure” on HP