Linux disks and partition names may be different from other operating systems. You need to know the names that Linux uses when you create and mount partitions. Here's the basic naming scheme:

After dasdz, the naming starts over with dasdaa, dasdab, ... up to dasdzz.

The partitions on each disk are represented by appending a decimal number to the disk name: dasda1 and dasda2 represent the first and second partitions of the first DASD device in your system.

From a Linux operating system point of view a SCSI/FCP disk looks like and behaves just like a normal SCSI disk. However they are almost always setup in a highly available way using multipath. The partitions on each SCSI disk are represented by appending a decimal number to the disk name: sda1 and sda2 represent the first and second partitions of the first SCSI disk drive in your system.

Note that if you have two SCSI host bus adapters (i.e., controllers), the order of the drives can get confusing. The best solution in this case is to watch the boot messages, assuming you know the drive models and/or capacities.