System Administration Guide

Choosing a Tape Device

Table 33-2 shows typical tape devices used for storing file systems during the backup process. For more detailed information on tape devices, see Chapter 38, Managing Tape Drives (Tasks).

Table 33-2 Typical Media for Backing Up File Systems

Media 

Capacity 

Tape Length 

1/2-inch reel tape 

40-45 Mbytes 

2300 feet 

60-Mbyte 1/4-inch streaming cartridge tape 

60 Mbytes 

425 feet 

150-Mbyte 1/4-inch streaming cartridge tape 

150 Mbytes 

700 feet 

2.3-Gbyte 8-mm cartridge tape 

2.3 Gbytes 

6000 feet 

5.0-Gbyte 8-mm cartridge tape 

5.0 Gbytes 

13000 feet 

4-mm cartridge tape (DAT) [Capacity depends on the type of drive and the data being written to the tape.]

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3.5-inch diskette [You can back up file systems using diskettes, but this is time-consuming and cumbersome.]

1422 blocks (1.44 Mbytes) 

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