We added new Hard disk. need add it to existing DG

take sdb as newly added disk

Step1: Format new disk and label as LVM disk
fdisk /dev/sdb
n -> p -> 1 -> return twice -> t -> 8e -> w

Step2: Create FS on new disk
mkfs.ext3 /dev/sdb1

Step3: Create as PV
pvcreate /dev/sdb1
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