更换SSA RAID阵列中硬盘的步骤(官方)
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内容提要:建了RAID的磁盘阵列在使用过程中可能会发生硬盘出现故障需要更换的情况，本文介绍了安全更换硬盘而不破坏数据的详细步骤。
说明:1. 首先需要从RAID定义中逻辑上删除故障硬盘。
执行下面的命令：# smit ssaraid-> Change Member Disks in an SSA RAID Array-> Remove a Disk from an SSA RAID Array2. 屏幕显示出如下的阵列列表：Change Member Disks in an SSA RAID ArrayMove cursor to desired item and press Enter.Remove a Disk From an SSA RAID ArrayAdd a Disk to an SSA RAID ArraySwap Members of an SSA RAID Array--------------------------------------------------------------------------------------------SSA RAID ArrayMove cursor to desired item and press Enter. Use arrow keys to scroll.hdisk6 6010337B163E30K good 2.3GB RAID-5 arrayhdisk5 09523173A02137K good 2.3GB RAID-5 arrayF1=Help F2=Refresh F3=CancelF8=Image F10=Exit Enter=Do/=Find n=Find Next--------------------------------------------------------------------------------------------选择要删除的硬盘所在的阵列的名称，在本例中选择hdisk6。
3. 屏幕显示如下的信息：Remove a Disk From an SSA RAID ArrayType or select values in entry fields.Press Enter AFTER making all desired changes.[Entry Fields]SSA RAID Manager ssa1SSA RAID Array hdisk6Connection Address / Array Name 6010337B163E30K* Disk to Remove +F1=Help F2=Refresh F3=Cancel F4=ListF5=Reset F6=Command F7=Edit F8=ImageF9=Shell F10=Exit Enter=Do按下F4键，列出属于该RAID阵列中的硬盘。
4. 硬盘列表显示如下：Remove a Disk From an SSA RAID ArrayType or select values in entry fields.Press Enter AFTER making all desired changes.[Entry Fields]SSA RAID Manager ssa1SSA RAID Array hdisk6Connection Address / Array Name 6010337B163E30K* Disk to Remove +----------------------------------------------------------------------------| Disk to Remove || || Move cursor to desired item and press Enter. Use arrow keys to scroll. || || pdisk4 0004AC50374D00D member present 1.1GB Physical || pdisk5 0004AC510D9100D member present 1.1GB Physical || pdisk7 0004AC510D9900D member present 1.1GB Physical || || F1=Help F2=Refresh F3=Cancel || F8=Image F10=Exit Enter=Do| /=Find n=Find Next |-----------------------------------------------------------------------------从上面显示的列表中选择需要删除的硬盘。
5. 使用“Set service Mode”服务帮助将需要删除的硬盘设置为维护模式。
命令如下：# diag-> Task Selection (Service Aids )-> SSA Service Aids-> Set Service Mode -- (选择硬盘)-> Set or Reset Service ModeThis will set the drive to service so the drive canbe replaced. You will see a > prompt displayed nextto the drive listing when service is set.例:pdisk0 AC503429 00-03-P 1GB SSA C Physical Disk Drivepdisk1 AC510D98 00-03-P 1GB SSA C Physical Disk Drivepdisk2 AC510D91 00-03-P 1GB SSA C Physical Disk Drivepdisk3 AC510D96 00-03-P 1GB SSA C Physical Disk Drivepdisk4 AC50374D 00-03-P 1GB SSA C Physical Disk Drive> pdisk5 AC510D91 00-03-P 1GB SSA C Physical Disk Drivepdisk6 AC510DBB 00-03-P 1GB SSA C Physical Disk Drivepdisk7 AC510D99 00-03-P 1GB SSA C Physical Disk Drive6. 物理上拿掉故障硬盘。
若不确定是那一块，可以看到故障硬盘的电源灯旁的黄色检查灯是亮的。
7. 物理上安装好替换的硬盘。
8. 按照步骤5的方法将硬盘从维护模式设置回普通模式。
9. 逻辑上从系统中删除旧的硬盘信息，再将新更换的硬盘配置起来：# rmdev -dl pdisk* (其中，pdisk* 为具体的硬盘号，本例中为pdisk5。
)# cfgmgr10. 下面需要将新更换的硬盘设置为阵列的候选盘：# smitty ssaraid-> Change/Show Use of an SSA Physical Disk-> 选择正确的SSA Raid卡。
从列表中选择正确的硬盘(屏幕显示如下)----------------------------------------------------------------------------------------------------------------------| SSA Physical Disk || Move cursor to desired item and press Enter. Use arrow keys to scroll. || || ################################################# || # SSA physical disks that are members of arrays. || pdisk4 0004AC50374D00D member n/a 1.1GB Physical || pdisk7 0004AC510D9900D member n/a 1.1GB Physical || ################################################# || # SSA physical disks that are AIX system disks. || pdisk5 0004AC510D9300D system n/a 1.1GB Physical || || F1=Help F2=Refresh F3=Cancel || F8=Image F10=Exit Enter=Do || /=Find n=Find Next |----------------------------------------------------------------------------------------------------------------------Make sure the Current Use Parameter is set to Array Candidate Disk onthe next screen (listed below). Press Tab on Current Use to changeand then Enter to execute.Change/Show Use of an SSA Physical DiskType or select values in entry fields.Press Enter AFTER making all desired changes.[Entry Fields]SSA RAID Manager ssa1SSA Physical Disk pdisk5CONNECTION address 0004AC510D9300DCurrent Use Array Candidate Disk11. 将新更换的硬盘添加回RAID阵列中:# smit ssaraid-> Change Member Disks in an SSA RAID Array-> Add a Disk to an SSA RAID Array选择正确的RAID名称，按F4选择硬盘按回车后，选择的硬盘被加入到RAID阵列中，系统在该硬盘上自动重建信息。
