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Chapter 10 - Performance Tuning and Troubleshooting
Network-Layer Performance Testing
172
If the disk you are aligning is already blank (raw), go to Step 3. If the disk
1.
contains data, back up the disk before proceeding.
Delete all partitions on the disk.
2.
From the Windows 2003 Server, open a command prompt and run
3.
Diskpart.exe
At the
4.
diskpart
If the disk you want to align does not appear in the list, make sure that it
exists and is accessible using the Disk Management snap-in.
At the
5.
diskpart
Where
is the number of the disk as shown in the output of the
X
command. The
diskpart
is the selected disk.
Disk X
At the
6.
diskpart
.
Align=64
At the
7.
diskpart
Letter=<DriveLetter>
After the drive letter is assigned, type
8.
Use the Disk Management snap-in or the Format command to format the
9.
partition as an NTFS-formatted partition.
When formatting, select an Allocation Unit Size that is a multiple of
Note:
4kBs.
Reference: Microsoft Technet article
us/library/aa998219.aspx
The second step in fine tuning a Memory Array is to test the performance of the
network-layer.
Network-layer performance testing may be done in two phases. First, ensure
that all of the PCIe connections are high-bandwidth. The Memory Array is
designed to use either single PCIe x8 G1 or dual PCIe x4 G1 connections and will
not perform optimally if insufficient provisioned.
Once you have confirmed that the PCIe connections are high bandwidth, use the
utility to baseline the system by testing the read bandwidth, write
perf_test
bandwidth, and a mix of reads and writes against the expected block size of the
application.
•
Preliminary Network-Layer Checks
VMA-series Memory Array Installation and Service Guide
.
command prompt, type
command prompt, type
utility should return a message that indicates that
command prompt, type
command prompt, type
.
exit
http://technet.microsoft.com/en-
on page 173
and press ENTER.
List Disk
.
Select Disk X
List Disk
Create Partition Primary
Assign
to exit the
diskpart
HP-AM456-9002A Rev 01
utility.
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