
	Home > Windows Server Tips > > Increase memory with 'Physical Address Extension'

Windows Server Tips:

EMAIL THIS

TIPS & NEWSLETTERS TOPICS

Increase memory with 'Physical Address Extension'

Doug Drewry
02.04.2003
Rating: -4.29- (out of 5) Hall of fame tip of the month winner

Digg This!

StumbleUpon

Del.icio.us

This tip was submitted to the SearchWin2000.com Tip Exchange by member Douglas Drewry. Let other users know how useful it is by rating the tip below.

Have you ever examined your Windows 2000 Advanced Server machine and wondered why it only reports 3.4 GB of RAM as being installed? Curious, especially since Advanced Server is capable of utilizing up to 8 GB of memory! Check your 'boot.ini' file for the /PAE switch in the ARC path as defined in the 'operating systems' section.

If the entry is not present, follow this procedure to add the switch: Windows 2000 Physical Address Extension (PAE) enables the operating system to utilize memory beyond normal 32-bit virtual addressing. It also allows the use of greater than 4 GB installed memory by the OS, and any applications written to use the Address Windowing Extensions API set.

Digg This!

StumbleUpon

Del.icio.us

RELATED CONTENT

	Computer Hardware Memory Management for Windows
	Simple tools and techniques for finding Windows memory leaks
	Give your system memory a boost with x64
	Virtualization and 64-bit: A match made in Windows heaven
	AMD claims memory controller breakthrough
	A guide to troubleshooting computer memory problems
	FAQ: Troubleshooting Windows hardware
	Computer memory for your Windows environment
	ECC memory: A must for servers, not for desktop PCs
	Diagnosing non-maskable interrupt signals
	How to detect a memory leak in Microsoft Windows

Microsoft Windows 2000 Server Administration

Best tools for probing LSA Secrets area of Windows Registry

Unable to view webpage inside LAN

Update the entire user property sheet in Active Directory

Optimize Windows virtual memory in Windows 2000 Server

DNS on workgroup servers vs DNS on domain servers

Mocbot update targets MS06-040 flaw

Utility helps you view ActiveX component information

Unregistered Microsoft Search .DLLs can cause problems

Domain controller management

Locking down SMTP in Win2K and Server 2003

Microsoft Windows 2000 Server Administration Research

Windows Storage Management

File classification the automated way with Windows Server 2008 R2

Using DFS to create file system virtualization in Windows Server 2008

File server migration tips for Windows Server 2008

Planning a file server migration to Windows 2008

Self-healing NTFS keeps admins one step ahead of data corruption

The efficacy of backup-as-a-service solutions

Server Message Block 2.0: A new protocol for the millennium

Using WBAdmin to create backups in Windows Server 2008

Breaking down the Windows Server Backup tool for Windows 2008

Keeping an eye on network disk space with Windows Server 2008

RELATED GLOSSARY TERMS

Terms from Whatis.com − the technology online dictionary

EDRAM (SearchWindowsServer.com)

RELATED RESOURCES

2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems

Search Bitpipe.com for the latest white papers and business webcasts

Whatis.com, the online computer dictionary

Even applications not using the AWE API benefit from using now-available lower memory space while the Windows operating system utilizes virtual address space mapped to the greater physical memory. Windows normally limits applications up to 2 GB of memory space. With PAE enabled, 3 GB of memory can be allocated to applications, while the last 1 GB of 32-bit memory space is used by the OS.

Virtual memory mapped above 4 GB is available for data caching or paging and reduces the need for disk access by keeping the data in memory. Microsoft recommends enabling PAE for applications that move large amounts of data into memory such as SQL Server. Use of PAE is available on Intel Pentium Pro or greater systems running Windows operating systems capable of using greater than 4 GB of RAM such as Windows 2000 Advanced Server and Datacenter Server.

Rate this Tip

To rate tips, you must be a member of SearchWindowsServer.com.
Register now to start rating these tips. Log in if you are already a member.

Submit a Tip

DISCLAIMER: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.

Server Room Design - Planning, Cooling, Maintenance

SEARCH

TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.


TechTarget Corporate Web Site \| Media Kits \| Site Map All Rights Reserved, Copyright 2004 - 2009, TechTarget \| Read our Privacy Policy