Question: how to create sdb in linux?
Answer: Verify the partitions available on the server: fdisk -l.
Choose which device you wish to use (such as /dev/sda or /dev/sdb)
Run fdisk /dev/sdX (where X is the device you would like to add the partition to)
Type 'n' to create a new partition.
Specify where you would like the partition to end and start.