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76 Configuring SAN Access
Data Mover Module
The data mover module allows you to use server-free tape backup applications that support SNIA extended
SCSI copy. Enabling this feature allows the appliance to move blocks of data directly between storage
devices attached to it.
Using Channel Zoning
Channel zoning (also called “port zoning”) configures access to an entire target channel and all the LUNs
on that channel for the exclusive use of a host or group of hosts on a single initiator channel. Each initiator
channel can connect a maximum of 64 hosts.
A LUN (Logical Unit Number) is a 3-bit identifier used on a SCSI bus to distinguish between as many as
eight devices with the same SCSI ID.
In a situation where the devices are tape devices and more than one host is connected to the initiator
channel, the tape library application typically manages host requests to the zoned channel.
1 Log on as SAN administrator, portal administrator, or power user.
2 Right-click an appliance in the navigation panel or the graphical panel.
3 Select the Access Options menu, then select Channel Zoning.
The default settings allow all SAN connections to access all target channels.
4 Select the check boxes to remove or create restricted access zones for the desired SAN connections
and target channels.
All combinations are possible.
Bear in mind that an entire channel is zoned when the box is checked.
If you make changes to the channel zoning settings you must restart the appliance for the new settings
to take effect.
5 To copy or print a text file of your channel zoning settings, select the Tools menu on the Channel
Zoning dialog box. Then select Copy Channel Zoning or Print Channel Zoning.
6 Select OK to proceed with any changes you made.
Select Cancel to leave channel zoning unchanged.
Note
Basic users are not authorized to enable the Data Mover Module. For user
privileges, refer to Table 2
on page 40.
Note
Basic users are not authorized to configure channel zoning. If the portal
administrator or power user have access to a portal with only partial access to
the channel zoning configuration, only the SAN administrator can modify
access.
CAUTION
If you create restricted access zones with channel zoning, then SFM,
eVPS, and VPM can only assign access permission within each
accessible zone. For more information refer to U
sing Scalar Firewall
Manager (SFM) on page 80, Using eVPS on page 84, or Using VPM on
page 90.
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