Introduction
CP 3100 Theory of Operation
17
Figure 2.
Restore Data Flow from a CP 3100 Virtual Tape Cartridge
Restore Data Flow from Physical Tape
If the virtual tape cartridge matching the backup software's request is not available, the CP 3100
flashes the Attention LED, prompting you to consult RemoteAdmin and/or insert the physical tape
into the physical tape drive. Once the CP 3100 verifies that the correct tape has been inserted, the
file(s) are restored directly from the physical tape drive to the host.
Figure 3.
Restore Data Flow from a Physical Tape through the CP3100
To maintain compatibility with backup software, the CP 3100 ensures a 1-to-1 relationship between
a virtual tape cartridge and a physical tape cartridge. In this way, backup data written to a virtual
tape cartridge is archived (copied) to a physical tape cartridge, and the physical tape cartridge can
be used with any compatible tape drives to successfully restore data. This 1-to-1 relationship
between a virtual tape cartridge and a physical tape cartridge prevents the CP 3100 from spanning
data from a single virtual tape cartridge across multiple physical tape cartridges.
1. Host requests
tape.
2. CP 3100 returns data
from virtual tape.
1. Host requests
tape.
3. User inserts
tape.
4. CP3100 verifies tape is the
one requested by host.
2. Data for the restore does not reside
on CP3100. User prompted to insert
tape via LED and RemoteAdmin.
5. Data is restored from tape
drive to host. CP3100
acts as pass-through.
