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1、P550更换内置RAID硬盘更换步骤维护准备：1备件磁盘2磁盘微码：3参考指南：PCI-X SCSI RAID controller Reference Guide for AIX维护步骤：（约需4小时）1、做好rootvg备份（mksysb）和数据备份（强烈建议）。2、检查系统和硬件设备：用命令lsdevCc pdisk、errpt查询硬盘设备信息。3、用diag-Task selection - RAID Array Manager - PCI-X SCSI Disk Array Manager - List PCI-X SCSI Disk Array configuration检查rai
2、d信息和pdisk6的状态。hdisk0 0B-08-ff-0,0 Degraded RAID 5 Array 714.2GBpdisk6 0B-08-00-5,0 Failed Array Member 142.8GBpdisk8 0B-08-01-5,0 Active Array Member 142.8GBpdisk7 0B-08-00-3,0 Active Array Member 142.8GBpdisk3 0B-08-01-3,0 Active Array Member 142.8GBpdisk5 0B-08-00-4,0 Active Array Member 142.8GBpd
3、isk4 0B-08-01-4,0 Active Array Member 142.8GB4、用以下操作再次确认硬盘槽位信息：diag-Task selection - RAID Array Manager - PCI-X SCSI Disk Array Manager - Diagnostics and Recovery OptionsSCSI and SCSI RAID Hot Plug Manager Identify a Device Attached to a SCSI Hot Swap Enclosure Device选择对应的硬盘，按F7确认硬盘所在的槽位（磁盘的黄灯亮）5、进行
4、磁盘更换用hot plug把硬盘更换，操作如下：DiagTask SelectionRAID Array ManagerPCI-X SCSI Disk Array Manager Diagnostics and Recovery Options SCSI and SCSI RAID Hot Plug Manager Replace/Remove a Device Attached to an SCSI Hot Swap Enclosure Device把故障硬盘更换，然后按F3回到上一层菜单 SCSI and SCSI RAID Hot Plug Manager Configure Added
5、/Replaced Devices更换硬盘后，回到diag-Task selection - RAID Array Manager - PCI-X SCSI Disk Array Manager - List PCI-X SCSI Disk Array configuration可以看到pdisk6的状态是failed，比如下图：hdisk0 0B-08-ff-0,0 Degraded RAID 5 Array 714.2GBpdisk6 0B-08-00-5,0 Failed Array Member 142.8GBpdisk8 0B-08-01-5,0 Active Array Membe
6、r 142.8GBpdisk7 0B-08-00-3,0 Active Array Member 142.8GBpdisk3 0B-08-01-3,0 Active Array Member 142.8GBpdisk5 0B-08-00-4,0 Active Array Member 142.8GBpdisk4 0B-08-01-4,0 Active Array Member 142.8GB用lsdevCc pdisk是可以看到pdisk6是available，然后检查微码，如果磁盘微码：Version 4335304B以下的就必须升级，可更换上去的磁盘微码：Version 4335304A，
7、所以不需要升级微码。6、对RAID_5进行重建diag-Task selection - RAID Array Manager - PCI-X SCSI Disk Array Manager - Reconstruct a PCI-X SCSI Disk Array选择新产生的磁盘进行重建(对146GB HDD大概需要4-5小时)7、重建完毕后，确认RAID_5的状态为optimaldiag-Task selection - RAID Array Manager - PCI-X SCSI Disk Array Manager - List PCI-X SCSI Disk Array configuration