7065DS3KIntro.fm Draft Document for Review August 30, 2007 12:59 am
20 IBM System Storage DS3000: Introduction and Implementation Guide
premium feature will enable the drive side SAS ports on the controllers and allow for
EXP3000 connectivity. You can attach up to three EXP3000 enclosures to a particular
DS3000.
2.3 DS3000 Storage Manager
DS3000 Storage Manager is used to manage the DS3200, DS3300, and DS3400 storage
subsystems. You can perform tasks like creating arrays and logical drives, assigning logical
drives to the host servers, setting up FlashCopy and VolumeCopy, capturing logs for
troubleshooting and so on. When discussing the DS3000 Storage Manager, it is important to
differentiate the following two terms:
Host server
This is a server attached to the DS3000 storage subsystem through the I/O path (SAS,
iSCSI or Fibre Channel). The host server has access to certain logical drives defined on
the DS3000.
Management station
Management station is a system used for DS3000 management. The DS3000 Storage
Manager GUI runs on the management station. You need to establish a management
connection between the management station and the DS3000 storage subsystem. This
can be done in two ways:
– Out-of-band
When using out-of-band management, the management station is connected to the
Ethernet management port in each DS3000 RAID controller. All management
communication flows across the TCP/IP connection between the management station
and the DS3000. We also call this method
direct-attached management. The
management station in this case only requires an Ethernet connection to the DS3000.
– Iin-band
This method utilizes the I/O path between a host server and the DS3000. In this case,
the management station does not have direct TCP/IP connection to the DS3000, but
rather communicates with the host server, (via an HBA) which acts as a gateway to the
DS3000 storage subsystem. Communication between the management station and
the host server is across a TCP/IP link, and communication between the host server
and DS3000 goes through the I/O path.
We also call this method
host-attached management.
We discuss both management methods in more details in 2.3.2, “Management methods”.
2.3.1 DS3000 Storage Manager components
The DS3000 Storage Manager package consists of the following components:
Storage Manager Client (SMclient/SMcli)
Storage Manager Agent (SMagent)
Storage Manager Utility (SMutil)
Storage Manager multipath support
Java access bridge (for Windows only)
The following sections contain more details on these components.
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