Operation and maintenance problems caused by automatic charging and discharging of array cards

Operation and maintenance problems caused by the automatic charging and discharging of the array card? 1. The battery life is limited, and the replacement cycle is generally 2-3 years. Replacement requires shutdown operation and operation and maintenance workload; 2. When the battery is automatically charged and discharged, the cache will be forcibly closed, which will affect the array function, greatly affect the business, and put pressure on operation and maintenance; 3. Due to battery problems A large number of problems and failures have increased the workload of the operation and maintenance team. Why discard the automatic charging and discharging function of the array card? 1. The Xiaomi server adopts the dual power supply method, and the replacement operation can be completed online after a single power failure; 2. The wiring specification makes the connection between the power supply and the plug not loose, and further reduces the power loss 3. The monthly failure rate of a single power supply is much lower than that of disks, memory and array cards, and the probability of simultaneous failures of dual power supplies is extremely low (about 1.5552 parts per million); Solution: 1. The cache unit The power supply method is changed to flash capacitor; 2. The cache is set to WT (write cache open) and CachedBadBBU (force open write cache). AutoLearn is still running, but the cache will not be closed during this process. (Recommended) 3. If the battery data protection time during AutoLearn is not good, I can also choose not to forcibly flip the write cache, and only manually perform battery relearning operations through MegaCli during the low peak period of the business; Disclaimer: Articles published on this site The pictures and content are from the Internet, if there is any infringement, please contact to delete