Identifying Drive Logical Device Names And Physical Locations - Sun Oracle Netra SPARC T4-1B Product Notes

■
■
■
To search using a patch number without the revision number (two last digits), use
% in place of the revision numbers. For example:
14159-%
4. Once you locate the patch, you can access the README and download the patch
from the site.
The patch README provides the patch installation instructions.
Identifying Drive Logical Device Names
and Physical Locations
The Oracle Solaris OS now uses the worldwide number (WWN) in place of the target
ID field (tn) in drive logical device names for SAS-2 storage controllers.
This change affects how you correlate a drive's logical name with the drive's physical
location. These points are key to understanding the impact of this change:
Before the change to using WWNs, drives were known to the OS by a logical name
■
such as c0t0d0. This logical name mapped to the drive's physical location.
With the change, the device identifier for drives now has this form: cntWWNdn,
where WWN is a unique hexadecimal value.
An example of the logical device name is:
c0t5000C50033438DBBd0
This WWN value does not map in a predictable way to the physical location of the
drive.
The OBP and the OS use different WWN numbers to identify a drive. This is
■
explained further in
(diskinfo Command)" on page
Here are some examples of situations when you must correlate a logical device
■
name with a drive's physical location:
■
8 Netra SPARC T4-1B Server Module Product Notes • February 2013
Solaris 10 8/11 Patch Bundle
13058415
147159-03
"Correlate WWN Device Names With Physical Locations
When downloading the OS over a network, you must specify the logical device
name of the drive in slot 0 (the default boot device). In addition, if you use
Oracle Solaris Jumpstart, you must use a certain WWN syntax. See
Solaris Jumpstart WWN Syntax" on page
9.
11.
"Oracle