HP LeftHand SAN Solutions Support Document - Application Notes - Best Practices for Enabling Microsoft Windows with SAN/iQ®

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Setting up Windows Performance Monitor
1 Open Windows Performance Monitor (Start Menu>Accessories>System
Tools>Performance Monitor, or run the perfmon.exe program).
2 Click the X icon several times to remove any existing counters.
3 Click the + icon or right-click on the graph area to open the Add Counters
function.
4 Configure the Add Counters window as shown below. Make sure to include
all counters listed above. (To simplify the process, choose “All counters”
from the column on the left to avoid having to individually select
counters). Add the PhysicalDisk counters listed in the table above, and
then click the Add button
5 Make sure to choose the proper physical disks from the section on the
right. Unless directed to do otherwise, select all disk instances and do not
choose the _Total. Selecting all the individual disks allows for a more
detailed analysis of the performance data.
Disk Bytes/sec Total data throughput
for the volume
Measured in Bytes/sec. Typical
values are in Megabytes/sec.
Disk Read Bytes/
sec
Read data throughput
for the volume
Measured in Bytes/sec. Typical
values are in Megabytes/sec.
Disk Write
Bytes/sec
Write data
throughput for
the volume
Measured in Bytes/sec. Typical
values are in Megabytes/sec.
Disk Reads/sec Read IOPS (I/Os / sec)
for the volume
Measured as the raw number.
Disk Writes/sec Write IOPS (I/Os /
sec) for the volume
Measured as the raw number.
Disk Transfers/
sec
Total IOPS (I/Os / sec)
for the volume
Measured as the raw number.
Windows
Performance
Counter SAN Measurement Notes