HP Hitachi Dynamic Link Manager Software - Manual (Page 36)

Table 2-5 Example of Using the Logical Device File Name of the Device
Used When the Application Accesses the LU
Host status Device file name that the application uses
Before installing HDLM The application uses the logical device file name for the
SCSI device.
Example:
sda
sdb
After installing HDLM The application uses the logical device file name for the
HDLM device.
Example:
sddlmaa
The logical device file name of an HDLM device has the following format:
/dev/sddlm[aa-pop][1-15]
About alphabetic letters used in the logical device file name:
¢
For the first 256 LUs, two alphabetic letters are assigned. The
specifiable values for the first two characters are in the range from a
to p.
¢
For the 257th and subsequent LUs, three alphabetic letters are
assigned. The specifiable values for the first and third characters are
in the range from a to p. The specifiable range of values for the
second character is from a to o.
¢
A major number is required for each of the first characters.
The following figure shows information about alphabetic letters used in the
logical device file name.
2-12
HDLM Functions
Hitachi Dynamic Link Manager User Guide for Linux ®