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PSQN | R750 | R7525 | FAN0029:后部硬盘固定框架风扇错误

Summary: 配置有后部 4x2.5" 硬盘背板的 Dell PowerEdge R750 和 R7525 服务器可能会在系统事件和生命周期日志中报告风扇错误。

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Symptoms

配置有后部 4x2.5" 硬盘背板的 Dell PowerEdge R750 和 R7525 服务器配备三个额外的后部系统风扇(7、8、9)。在正常的系统操作下,这些风扇可能会反复报告它们被卸下并重新插入服务器。这些错误事件记录在系统事件日志 (SEL) 和 iDRAC9 生命周期日志中。

现场终端用户可以通过检查服务器背面左上三分之一处的 2.5" 驱动器插槽来直观地确定后部 4x2.5" 硬盘背板是否存在。查看下图以确定 4x2.5" 背板固定框架。 
R750-Rear-Image.png
远程终端用户可以通过 iDRAC9 Web 用户界面确定后部 4x2.5" 硬盘背板是否存在。转至 Storage > Overview > Enclosures。展开可用的机柜详细信息,检查是否存在 Enclosure Location = Rear。 
 
Storage-RearBP.png

出现此问题的系统可能会循环显示一些事件,指示后部风扇 7-9 缺失,并且在大约五秒钟后指示风扇已插入。这些 FAN0029 和 FAN0028 事件记录在 SEL 和生命周期日志中,如以下示例所示。

系统事件日志示例:
 
2022-02-15 01:32:10        3076        Fan 7A is either removed, incorrectly installed, or not present.
2022-02-15 01:32:10        3077        Fan 8A is either removed, incorrectly installed, or not present.
2022-02-15 01:32:10        3078        Fan 9A is either removed, incorrectly installed, or not present.

2022-02-1501:32:15        3079        Fan 7A inserted.
2022-02-1501:32:15        3080        Fan 8A inserted.
2022-02-1501:32:15        3081        Fan 9A inserted.
 
生命周期日志示例:
 
2022-02-15 01:32:15        3324        FAN0029        Fan 7A is either removed, incorrectly installed, or not present.
2022-02-15 01:32:28        3325        FAN0029        Fan 8A is either removed, incorrectly installed, or not present.
2022-02-15 01:32:29        3326        FAN0029        Fan 9A is either removed, incorrectly installed, or not present.

2022-02-1501:32:30        3327        FAN0028        Fan 7A is inserted.
2022-02-1501:32:31        3328        FAN0028        Fan 8A is inserted.
2022-02-1501:32:32        3329        FAN0028        Fan 9A is inserted.

此外,生命周期日志可能包含风扇 RPM 事件(FAN0000、FAN0005)和风扇冗余事件(RDU0001、RDU0002)。
 
2022-02-1501:38:55        3413        RDU0001        The fans are redundant.
2022-02-1501:38:54        3412        FAN0005        Fan 9A RPM is within range.
2022-02-15 01:38:54        3411        FAN0000        Fan 9A RPM is less than the lower warning threshold.
2022-02-1501:38:53        3410        FAN0005        Fan 8A RPM is within range.
2022-02-15 01:38:52        3409        FAN0000        Fan 8A RPM is less than the lower warning threshold.
2022-02-1501:38:52        3408        FAN0005        Fan 7A RPM is within range.
2022-02-15 01:38:51        3407        FAN0000        Fan 7A RPM is less than the lower warning threshold.
2022-02-15 01:38:51        3406        RDU0002        Fan redundancy is lost.

Cause

iDRAC9 每五秒查询一次系统风扇的 RPM 读数。当这些事件循环快速连续发生时,iDRAC 会将某些返回的数据字节误解为错误,从而导致虚假的“removed”(已卸下)错误消息。在以下出自 iDRAC 的查询中,风扇和 iDRAC 正确同步,导致日志中出现“inserted”(已插入)消息。

Resolution

Dell iDRAC9 固件版本 5.10.10.52(2022 年 4 月)解决了对这些返回的 RPM 响应的错误处理。升级到此版本应该会解决问题。

Affected Products

iDRAC9, iDRAC9 - 4.xx Series, iDRAC9 - 5.xx Series, PowerEdge R750, PowerEdge R7525