S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
50-2
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 50 Configuring NASB
About NASB
Note
The media server, disk, and tape can be located anywhere in the fabric.
An example configuration is shown in
Figure 50-1
. The media server moves the data directly between
the storage disks and the tape devices during backups.
Figure 50-1
Example Configuration with Media Server as Data Mover
When the NASB is the data mover, it moves the data between the disks and the tapes. The NASB device
is a SCSI target device capable of handling SCSI Extended Copy (XCOPY) commands as well as a SCSI
initiator device capable of issuing READ/WRITE commands to disks and other backup media, such as
tapes. See
Figure 50-2
.
Figure 50-2
Example Configuration with NASB Device as Data Mover
The task of managing and preparing the source and destination targets is performed by the media server.
For example, if the destination is a tape library, the media server issues commands to load and unload
the correct tape and position of the tape write head at the correct offset within the tape.
SAN
Storage (disks)
Tape library
Client
(Application server)
Media
server
Write
Read
Logical block
list
130079
SAN
Storage (disks)
Tape library
Client
(Application server)
Media
server
Write
Read
SCSI Extended Copy
(XCOPY) commands
Logical block
list
130080
Network-Accelerated
Serverless Backup
(NASB) device