0611 Direct Attach 2 Gigabit Fibre Channel PCI
0625 Direct Attach 2 Gigabit Fibre Channel
It is also possible for the AIX partition to have its storage virtualized, whereby a partition running OS/400 hosts the AIX partition's storage requirements. In this case, if using DS6000, it would be attached to the OS/400 partition using either of the following I/O adapters:
2766 2 Gigabit Fibre Channel Disk Controller PCI
2787 2 Gigabit Fibre Channel Disk Controller
For more information on OS/400 support for DS6000, see Appendix B, “Using the DS6000 with iSeries” on page 329.
For more information on running AIX in an i5 partition, refer to the i5 Information Center at:
http://publib.boulder.ibm.com/infocenter/iseries/v1r2s/en_US/index.htm?info/iphat/iphatlpar kickoff.htm
Note: AIX will not run in a partition on earlier 8xx and prior iSeries systems.
Monitoring I/O performance
iostat
The iostat command is used to monitor system input/output device loading by observing the time the physical disks are active in relation to their average transfer rates. It also reports on CPU use. It provides data on the activity of physical volumes, not for file systems or logical volumes. Refer to “UNIX performance monitoring tools” on page 301 for more information.
filemon
The filemon command monitors the performance of the file system, and reports the I/O activity with regard to files, virtual memory segments, logical volumes, and physical volumes.
Normally, filemon runs in the background while one or more applications are being executed and monitored. It automatically starts and monitors a trace of the program's file system and I/O events in real time. By default, the trace is started immediately, but it can be deferred until the user issues a trcon command. Tracing can be turned on and off with tron and troff as desired, while filemon is running. After stopping with trcstop, filemon generates an I/O activity report and exits. It writes its report to standard output or to a specified file. The report begins with a summary of the I/O activity for each of the levels being monitored and ends with detailed I/O activity statistics for each of the levels being monitored.
Example
filemon
This monitors the activity at all file system levels for 30 seconds and writes a verbose report to the file fmon.out.
Example: A-9 Filemon output file
Wed Nov 17 16:59:43 2004
System: AIX part1 Node: 5 Machine: 00CFC02D4C00
Cpu utilization: 50.5%
Most Active Files
