E-Series 写回缓存在磁盘架过温事件后被禁用

•  NetApp E 系列系统
•  NetApp SANtricity 操作系统
•  带有控制器缓存和电池备份单元 (BBU) 的系统

• SANtricity 报告严重事件 `ECRFLT:DWEF300-2`
• 控制器回写缓存显示已禁用
• 磁盘盘架报告严重温度条件
• 事件日志消息包括以下一个或多个：

B:3/7/26, 1:06:45 PM (13:06:45) 17317 212c Write-back caching fully restored - Shelf 99, Bay B

B:3/6/26, 11:46:53 PM (23:46:53) 17287 212b Write-back caching forcibly disabled - Shelf 99, Bay B - Event: BAD BBU-0,1,2,3,4,5,6 <--CRITICAL
B:3/6/26, 11:31:47 PM (23:31:47) 17286 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: BAD BBU,Battery Unusable-0
B:3/6/26, 11:31:47 PM (23:31:47) 17285 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay B
----> Sense 6/3f/c6 = Unit Attention - Temperature sensor failed
----> FRU group: Subsystem; Tray ID: 99, Type : Temp Sensor, State: Failed
A:3/6/26, 11:31:49 PM (23:31:49) 17284 281c Maximum temperature exceeded - Shelf 99 <--CRITICAL