Hitachi Dynamic Link Manager Software Users Guide for AIX

To use Tiebreaker Disk, Global Link Manager is required. Use Global Link
Manager to set Tiebreaker Disk load balancing to off.
Memory and Disk Capacity Requirements
The table below shows the memory requirements for the host.
Memory Requirements
Table 3-4 Memory Requirements for the Host on page 3-11 shows the
memory requirements for the host.
Table 3-4 Memory Requirements for the Host
OS Required memory
AIX 5000 KB + 0.256 KB × number-of-LUs + 1.28 KB × number-of-paths
Disk Capacity Requirements
The following table lists the disk capacity used by the host.
Table 3-5 Disk Capacity Occupied by the Host
Directory Disk capacity requirement
/etc
150 KB
/opt
2 MB
/usr
220 MB
/var
p MB
#1
+4MB + 2 MB + q MB
#2
+ 19 MB +
200 KB
#3
#1
This value depends on the error log file settings. The maximum is 30,000
MB.
p = (s × m) / 1024 (in MB),
where:
s is the size of the error log file (units: KB, default is 9,900), and
m is the number of error log files (default is 2). The resulting fraction will
be rounded up.
#2
This value depends on the trace file settings. The maximum is 1000 MB.
q = (t × n) / 1024 (in MB),
where:
t is the size of the trace file (units: KB, default is 1,000), and
n is the number of trace files (default is 4). The resulting fraction will be
rounded up.
Creating an HDLM Environment
3-11
Hitachi Dynamic Link Manager (for AIX) User Guide