HP Z220, Z420, Z620, and Z820 Workstations Microsoft® Windows® XP Installation Reference Guide

3
Logical Core Limit
OS Version : Microsoft
®
Windows
®
XP Pro (32 bit)
Workstation Model: Z620, Z820
Observation: Microsoft
®
Windows
®
XP Pro (32 bit) does not function properly with more than 24 logical cores.
Solution: Disable Hyper Threading for all Dual Processor configurations with 8 or more Physical Cores per processor.
Availability of RAM
OS Version: Microsoft
®
Windows
®
XP Pro (32 bit)
HP Workstation Models: Z220, Z420, Z620, Z820
Observation: Memory available to the user/applications after system set up may be less than on earlier HP Workstations.
Solution: None. This behavior is expected and is not an indication of a technical issue.
Missing PCI Device Driver - VEN_8086&DEV_1D6B
OS Versions: Microsoft
®
Windows
®
XP Pro x64
HP Workstation Models: Z420, Z620, Z820
Observation: Device Manager shows a driver missing for the device named VEN_8086&DEV_1D6B
Comments: The behavior is expected. This device (SCU HDD Controller) is not supported under Microsoft
®
Windows
®
XP Pro x64.
Solution: During system startup, hit the F10 key to enter BIOS Setup and disable the SCU. Path: F10 > Security > Device Security > SCU
Controller (Change to Hidden)
Slower than expected HDD and/or system performance
OS Version: Microsoft
®
Windows
®
XP Pro (32 bit)
HP Workstation Models: Z220, Z420, Z620, Z820 equipped with 512e HDDs.
Observation: Hard Disk Drive (HDD) and/or Overall system performance slower than expected.
Comments: A recent industry change in HDD sector sizing may cause reduced hard disk performance and therefore a reduction in system
performance for Hard Disk Drive focused applications, etc. Microsoft
®
Windows
®
XP Pro (32 bit) does not support the new standard directly.
Resolution: Determine if the image applied to the HDDs is properly aligned. Align the image if necessary. Additional information can be found in
an HP White Paper titled “Preparing Advanced Format hard drives for Microsoft Windows installations on HP Business Notebook PCs,
Workstations, and Desktop PCs”
This document is located at: www.hp.com/support/workstation_manuals
Intel® vPro™/AMT manageability features unavailable
OS Version: Microsoft
®
Windows
®
XP Pro (32 bit) and Microsoft
®
Windows
®
XP Pro x64
HP Workstation Models: Z220, Z420, Z620, Z820 equipped with 512e HDDs.
Observation: When running Windows® XP, Intel® vPro™/AMT, OS centric manageability features are missing.
Comments: This behavior is expected. When running Windows® XP, Intel® vPro™/AMT manageability features are limited to those available
independent of the Operating System (“out-of-band” features).
Resolution: None. The behavior is expected.