Chapter 2. Introduction to IBM System Storage DS3500 25
Draft Document for Review March 28, 2011 12:24 pm 7914DS3KIntro_081410alw.fm
Access logical drive
The access logical drive exists in each storage partition by default (no manual configuration is
required). This is not actually a real logical drive, although it is presented to the operating
system as a drive on LUN 31. In order to allow for in-band management communication
across the I/O path, we need a target device for SCSI commands. The SCSI commands to
this target are used as a vehicle for Storage Management communication along the I/O path.
The access logical drive is that target device. The access logical drive is also sometimes
referred to as the
Universal Transport Mechanism (UTM) device or the Universal XPort
device.
Out-of-band management
Out-of-band management requires that the management IP addresses are configured on
both controllers and that the controllers’ management ports are connected to the
management network. This should be a separate LAN or a VLAN, as we do not recommend
using the production LAN or VLAN for the management network traffic.
A separate management workstation is another requirement; typically, the system
administrator uses their own workstation for this purpose. Figure 2-13 shows the
management workstation and the DS3500 subsystem, connected on the Ethernet
management network.
Figure 2-13 Out-of-band management
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