单选题A system administrator notices that one of the mirrored disks, hdisk7 on datavg, has had a hardware failure. What is the best method of recover without causing additional problems?（）A unmirrorvg datavg hdisk7 reducevg datavg hdisk7 replace the physical
题目
单选题
A system administrator notices that one of the mirrored disks, hdisk7 on datavg, has had a hardware failure. What is the best method of recover without causing additional problems?（）
A
unmirrorvg datavg hdisk7 reducevg datavg hdisk7 replace the physical volume, run cfgmgr extendvg datavg hdisk7 mirrovg datavg hdisk7
B
varyoffvg datavg Rmdev -l hdisk7 -d Replace the physical volu,e run cfgmgr The system will automatically remirror when the disk is replaced
C
unmirrorvg datavg hdisk7 rmdev -l hdisk7 - d replace the physical volume, run cfgmgr extendvg datavg hdisk7 The system will automatically remirror when the disk is replaced.
D
unmirrorvg datavg hdisk7 reducevg data hdisk7 rmdev -l hdisk7 -d replace the physical volume, run cfgmgr extendvg datavg hdisk7 mirrovg datavg