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HP StorageWorks 1000 - Modular Smart Array Installazione

Device Manager status information

In the following example, three LUNs are being presented to the

server, but because there are two paths to the storage, the number

of listed SCSI Disk Devices is duplicated. With multipathing

support enabled, Device Manager also shows three Multi-Path

Disk Devices, one for each LUN.

This example also shows multipathing support enabled on the

HBAs.

Figure 2: Device Manager showing multipath support

Recovering from failover situations

For some failover events, sufficient information is provided in the

monitoring tools to assist the diagnosis and repair of the problem.

If information regarding the cause of the failover event is not

available, examine the following items in the failed path:

Cable connections of each device:

— Server

— HBA

— Switch

— MSA I/O module

HBA health

Switch health

MSA controller health

Schedule a system maintenace window as needed to reseat or

replace any faulty hardware.

Note:

When the MSA is restarted, controller1 (the primary, right

controller) is made the active controller. If a problem still exists on the

primary path, the system automatically fails over to the redundant

path.

Uninstalling Windows basic failover

1. Verify that only the primary path (connected to the I/O

module behind controller1) is connected between the server

and the MSA.

Only one path to the storage can be visible when uninstalling

MPIO.

If necessary, disconnect the cables to the redundant path.

2. From the server, select Start > Settings > Control Panel.

3. Select Add/Remove Programs.

4. Select HP Modular Smart Array Multi Path Software,

click Remove, and then follow any onscreen instructions.

5. Restart the server.

6. Repeat these steps on each server with access to the MSA.

Uninstalling Linux basic failover

To uninstall the components from the driver kit, use the

INSTALL script with the -u option:

# ./INSTALL -u

If you want to manually uninstall all the components, or you want

to uninstall just one of the components, use one or all of the

following commands:

# rpm -e fibreutils

# rpm -e hp_qla2x00

# rpm -e hp_qla2x00src