Installing The Storage Subsystem Configuration; Connecting Sas Hosts To The Ds3500; Direct (Out-Of-Band) Managed Storage - IBM DS3500 Installation, User's, And Maintenance Manual

Figure 3-30. Direct (out-of-band) managed storage subsystems

Installing the storage subsystem configuration

Before attempting to attach hosts to the storage subsystem, make sure that the host systems and host bus
adapters (HBAs) are installed correctly and updated with the latest firmware and drivers.
Note:
1. See the documentation that comes with the HBA for installation requirements and procedures.
2. Use the correct HBA firmware and device driver. For the latest supported HBAs and device drivers,
consult the readme that comes with the DS3500 controller firmware.
For a SAS attached host, attach a SAS cable to each HBA. Continue with "Connecting SAS hosts to the
DS3500" to connect the other end of each cable to a controller.
For a Fibre Channel attached host, attach a fibre channel cable to each HBA. Continue with "Connecting
Fibre Channel hosts to the DS3500" on page 3-34 to connect the other end of each cable to the controller.
For an iSCSI attached host, attach an Ethernet cable to each host. Continue with "Connecting iSCSI hosts
to the DS3500" on page 3-39 to connect the other end of each cable to the controller.

Connecting SAS hosts to the DS3500

The DS3500 can support up to 28 hosts when attached to the SAS Connectivity Module for IBM
BladeCenter and up to four hosts in a direct attached host environment. The number of supported hosts
depends on the number of host ports installed on the controller. To protect against the loss of any one
path from the host servers to the DS3500 storage subsystem, use redundant host connections.
Note:
3-28
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide