Compaq ProLiant 6400R Compaq Parallel Database Cluster Model PDC/05000 for Ora - Page 203

Devices on One I/O Connection Path Cannot Be Seen by the Cluster Nodes

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7-16 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide To determine whether or not the storagesets can be viewed by a KGPSA-BC device driver, do the following: 1. From the Device Manager, select SCSI Adapters. 2. View the list of installed Hard Drives and manually count them. The total number of drives, excluding the system drives, should be equal to the number of paths associated with each storageset multiplied by the total number of storagesets configured. For example, if there are 12 LUNs configured with no offsets for an MA8000/EMA12000 Storage Subsystem, then Windows 2000 Advanced Server will have 4 I/O paths to each LUN. The Device Manager should display 48 Hard Drive entries (4*12 = 48). If one or more of the storage subsystem's storagesets is not displayed, then check the integrity of the I/O path from the host adapter to its Fibre Channel SAN Switch or Storage Hub and out to its array controllers. Do the following: I Confirm that the KGPSA-BC device driver was properly installed. Refer to "Installing Secure Path Software for Windows 2000" in Chapter 5, "Installation and Configuration." I From the Secure Path Manager GUI, confirm that all of the I/O paths are visible for each storageset (LUN). I Check the status LEDs on the host adapter for error indications. I Use CLI to obtain status information about the array controller. Verify that both port 1 and port 2 are active (for example, that connections are online and that each port was negotiated with its designated FC-AL or Fibre Channel Fabric device ID). Devices on One I/O Connection Path Cannot Be Seen by the Cluster Nodes For a Redundant Fibre Channel Fabric If the cluster node cannot see all of the storagesets that are configured to the Fibre Channel Fabric paths, do the following: I Verify that the array controllers on the unseen path are set for Multibus_Failover mode. If an array controller has not been set to Multibus_Failover mode, then the cluster nodes will only see the storagesets that are configured to the other array controller in the storage subsystem.

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7-16
Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide
To determine whether or not the storagesets can be viewed by a KGPSA-BC
device driver, do the following:
1.
From the Device Manager, select
SCSI Adapters.
2.
View the list of installed Hard Drives and manually count them. The
total number of drives,
excluding the system drives,
should be equal to
the number of paths associated with each storageset multiplied by the
total number of storagesets configured. For example, if there are 12
LUNs configured with no offsets for an MA8000/EMA12000 Storage
Subsystem, then Windows 2000 Advanced Server will have 4 I/O paths
to each LUN. The Device Manager should display 48 Hard Drive entries
(4*12 = 48).
If one or more of the storage subsystem
’
s storagesets is not displayed, then
check the integrity of the I/O path from the host adapter to its Fibre Channel
SAN Switch or Storage Hub and out to its array controllers. Do the following:
■
Confirm that the KGPSA-BC device driver was properly installed. Refer
to
“
Installing Secure Path Software for Windows 2000
”
in Chapter 5,
“
Installation and Configuration.
”
■
From the Secure Path Manager GUI, confirm that all of the I/O paths are
visible for each storageset (LUN).
■
Check the status LEDs on the host adapter for error indications.
■
Use CLI to obtain status information about the array controller. Verify
that both port 1 and port 2 are active (for example, that connections are
online and that each port was negotiated with its designated FC-AL or
Fibre Channel Fabric device ID).
Devices on One I/O Connection Path Cannot Be
Seen by the Cluster Nodes
For a Redundant Fibre Channel Fabric
If the cluster node cannot see all of the storagesets that are configured to the
Fibre Channel Fabric paths, do the following:
■
Verify that the array controllers on the unseen path are set for
Multibus_Failover mode. If an array controller has not been set to
Multibus_Failover mode, then the cluster nodes will only see the
storagesets that are configured to the other array controller in the storage
subsystem.