Auto Assigned Maps; Scc Maps; Buffered Tape Writes - HP M2402 User Manual

Auto Assigned Maps

An Auto Assigned map is built dynamically and contains all of the devices found
during discovery. This map will change automatically any time the discovery
process finds a change in the devices attached. This map cannot be modified by
the user.

SCC Maps

An SCC map is only available on Fibre Channel ports and contains only a single
entry for LUN 0. This LUN is a router controller LUN. Access to attached devices
is managed using SCC logical unit addressing.

Buffered Tape Writes

This option is designed to enhance system performance by returning status on
consecutive write commands prior to the tape device receiving data. In the event
that data does not transfer correctly, the router will return a check condition on a
subsequent command.
Commands other than Write are not issued until status is received for any pending
write, and status is not returned until the device completes the command. This
sequence is appropriate for tasks such as file backup or restore.
Some applications require confirmation of individual blocks being written to the
medium, such as for audit trail tapes or log tapes. In these instances, the Buffered
Tape Writes option must be disabled.
Network Storage Router M2402 User Guide
Configuration Overview
41