Question { 9262 }

What is the difference between Vxdmp and EMC powerpath?

Answer

vxdmp means dynamic multipathig, here it set attributes to the disk arrays , and it monitor the connections to the server by hba ports and load balancing b/w the ports like active-active
and active-passive

Question { HP, 5651 }

After installing kernal patch if system crashed,then how to
recover?

Answer

b4 installing patch,we must maintain the /etc/vfstab, /etc/system back ups and if our system root in mirror means
if we have mirrored os disks first we break it.
so if our system crashed after installing patch then we can easily up our system