IBM System Storage DS4000, Hardware Manual

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IBM Midrange System Storage Hardware Guide
7.8.3 Storage Manager communication problems
If Storage Manager shows the status of one of the DS4000 or DS5000 storage subsystems
as unresponsive, then there are some recovery procedures to be followed.
In-band management
To recover the storage subsystems using in-band management, perform these steps:
1. Close all Storage Manager windows.
2. Check to make sure that the Access LUN is presented to the Storage Manager station.
There is a utility provided called SMDevices, whose location and exact file name varies
depending on the operating system. In Windows, the file is called
SMDevices.bat and is
located in the Program Files\IBM DS4000\util folder by default.
Use this utility to determine whether the Access LUN is visible. The default LUN number is
31. If the Access LUN is not mapped to the Storage Manager station, then in-band
management will not be possible.
3. Restart the host agent software. On Windows 2003 and 2008 hosts, this can be done by
performing these steps:
a. Select Start

Administrative Tools

Services. The Services window opens.
b. Right-click IBM DS Storage Manager Agent.
c. Click Restart. The IBM DS Storage Manager Agent stops and then starts again.
d. Close the Services window.
4. Restart the Storage Manager client.
Out-of-band management
To recover the storage subsystems using out-of-band management, perform these steps:
1. Ping both controllers from the Storage Manager station.
a. If the controllers respond to a ping, but Storage Manager remains unresponsive, then
your firewall settings should be checked.
b. If the controllers do not respond to a ping, then there might be local network problems.
Try using another mobile computer or host with a direct cable connection to one of the
controllers. The default IP addresses for the controller A Ethernet ports 1 and 2 are
192.168.128.101 and 192.168.129.101, respectively. The default IP addresses for the
controller B Ethernet ports 1 and 2 are 192.168.128.102 and 192.168.129.102,
respectively. The default subnet mask for all four Ethernet ports is 255.255.255.0.
2. If the problem persists, then contact IBM Support for further assistance. A controller reset
might be required.