Hitachi Dynamic Link Manager Software Users Guide for Windows (7.6)

Setting Range of the iSCSI Software and iSCSI HBA
The following describes the ranges that can be used for the iSCSI software
and iSCSI HBA settings. For notes on how to set these values, see the
corresponding documentation for your particular iSCSI software and iSCSI
HBA.
• IP addresses
Use the same network address for both an HBA and a CHA port connected
via a common path.
• Other settings
¢
An IP-SAN can be used for multiple hosts.
¢
A single HBA can connect to multiple CHA ports.
When using the iSCSI software together with multiple NICs, be sure to
connect each NIC to a different IP network. Also, be sure to connect to the
storage system by using a different CHA port for each IP network. To view an
example of the configuration described above, see
Figure 2-3 Configuration of
an IP-SAN System When Using iSCSI Software and an NIC on page 2-6.
Storage systems Supported by HDLM
The following storage systems can be used with an IP-SAN: the Lightning
9900V series, Hitachi AMS/WMS series, Hitachi Universal Storage Platform
100, Hitachi Universal Storage Platform 600, Hitachi Universal Storage
Platform 1100, Hitachi NSC 55, and Hitachi SMS series.
LU Configuration
After you have properly installed HDLM, the LU configuration will change as
follows:
Before the installation of HDLM:
In the Windows' Disk Management window of a host, one SCSI device is
displayed as multiple LUs, each of which corresponds to one path.
In other words, the number of LUs in a storage system appeared to be
the same as the number of paths connected to the various SCSI devices.
After the installation of HDLM:
The MPIO driver combines what was once viewed as multiple LUs (each
with one path) into one LU containing multiple paths. In the Windows'
Disk Management window of a host, only the disks that have a one-to-
one correspondence with an LU in the storage system are displayed.
This means that each LU in the storage system is always recognized as
only one LU, regardless of the number of paths that are connected to
SCSI devices.
You can display all the various SCSI devices from the Windows' Device
Manager window.
HDLM Functions
2-7
Hitachi Dynamic Link Manager User Guide for Windows
®