If your installation is going to use optical, tape, or both types of storage, you must estimate the amount of optical disk and tape cartridge storage that you need for your OAM implementation. Factors to consider should include the number of the following:

• Optical libraries required per day
• Optical disks, tape cartridges, or both required per year
• Shelf-resident optical disks, tape cartridges, or both
• Optical, tape, or both types of libraries
• Operator-accessible optical disk drives
• Tape stand-alone drives, ATLDSs, and MTLs, or a combination of these devices