Verifying that the nodes have access to the same disk


Verifying that the nodes have access to the same disk
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Before you test the disks that you plan to use as shared data storage or as coordinator disks using the vxfentsthdw utility, you must verify that the systems see the same disk.

To verify that the nodes have access to the same disk

Verify the connection of the shared storage for data to two of the nodes on which you installed SF Oracle RAC.
Ensure that both nodes are connected to the same disk during the testing. Use the vxfenadm command to verify the disk serial number.
```
vxfenadm -i diskpath
```
Refer to the vxfenadm (1M) manual page.

For example, an EMC disk is accessible by the /dev/rdsk/c1t1d0s2 path on node A and the /dev/rdsk/c2t1d0s2 path on node B.

From node A, enter:
```
vxfenadm -i /dev/rdsk/c1t1d0s2
```
```
Vendor id : EMC 
Product id : SYMMETRIX 
Revision : 5567
Serial Number : 42031000a
```
The same serial number information should appear when you enter the equivalent command on node B using the /dev/rdsk/c2t1d0s2 path.

On a disk from another manufacturer, Hitachi Data Systems, the output is different and may resemble:
```
# vxfenadm -i /dev/rdsk/c3t1d2s2
```
```
Vendor id       : HITACHI 
Product id      : OPEN-3        -SUN
Revision        : 0117
Serial Number   : 0401EB6F0002
```

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