Store and ESE Tuning, Online Store Maintenance | Microsoft 1

26Microsoft Exchange 2000 Operations — Version 1.0

reduced to 10,000, SMTP will refuse any inbound mail after the queue reaches 10,000 messages.

You may need to alter the following registry entry if the Exchange 2000 computer is running out of memory because the number of incoming messages is too great for the server to process:

◆Location. HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Mailmsg

◆Parameter. MaxMessageObjects (REG_DWORD)

◆Default setting. Not present but defaults to 0x186a0

Store and ESE Tuning

Due to advances in the store process, the Exchange information store requires very little manual tuning. However, better performance can be achieved with good implementation and configuration.

Online Store Maintenance

The store requires periodic online maintenance to be run against each database. By default, each database is set to run online maintenance between the times of 1:00 A.M. and 5:00 A.M. Online maintenance performs a variety of tasks necessary to keep the store in good health. These include, but are not limited to, the following:

◆Checking Active Directory to determine if there are any deleted mailboxes.

◆Removing any messages and mailboxes that are older than the configured retention policy.

◆Performing online defragmentation of the data within the database.

All of the operations performed by online maintenance have specific performance costs and should be understood in detail before implementing an online maintenance strategy.

Active Directory Checking

This consists of a Windows 2000 Active Directory service lookup for each user in the database. The more users you have in each database, the more Active Directory searches (using Lightweight Directory Access Protocol [LDAP]) will be made. These searches are used to keep the store in sync with any Active Directory changes (specifically to check for deleted mailboxes). The performance cost of this task is negligible on the server running Exchange but can be significant for domain controllers, depending on the number of users, number of databases, and the online maintenance times of each database. In a corporate

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Microsoft 1 manual Store and ESE Tuning, Online Store Maintenance, Active Directory Checking

Contents

Exchange 2000 Operations Guide Version Isbn Contents Change and Configuration Management Enterprise Monitoring Support ProtectionGlossary Page Reviewers Content LeadKey Authors ViiPage Introduction Microsoft Operations Framework MOF SLA How to Use This Guide Efficiency, Continuity, and Security Efficiency Continuity Chapter Outlines Capacity and Availability Management Planning and Deployment Protection Service Level Agreements Features Recovery Performance Summary Related TopicsPage Capacity and Availability Management Capacity Management Chapter Sections Capacity and Availability Management Microsoft Exchange 2000 Operations Version Service Hours Availability Management Service Availability Minimizing System Failures Decreasing Single Points of Failure Increasing the Reliability of Exchange Performance Tuning Minimizing System Recovery Time Making Changes to the Registry Optimizable Features No Performance Optimizer Tuning the Message Transfer Agent MTA Tuning ConsiderationsUpgrading from Exchange 5.5 to Exchange Tuning Smtp Transport Mailroot Directory Location Smtp File Handles Hkeylocal Online Store Maintenance Store and ESE TuningActive Directory Checking Online Backups Message Deletion and Online Defragmentation Choosing the Correct Maintenance Strategy First Storage Group Extensible Storage Engine ESE Heaps Store-Database Cache Size Microsoft Exchange 2000 Operations Version Tuning Active Directory Integration Log Buffers Type SET Maxactivequeries to 40 and press Enter Tuning Outlook Web Access OWA Setting OWA Properties Hardware Upgrades Page Change and Configuration Management Prerequisites Change ManagementDefining Change Type Request for Change Is Submitted to Change Manager Change Manager Assesses the RFC Change Is Passed to IT Executive Committee for Approval Change Is Passed to the Change Owner Change Process Evaluation Minor and Standard Changes Scripting Minor and Standard Changes Software Control and Distribution SecurityDocumentation Configuration Management Configuration Management and Change Management Tools for Configuration ManagementConfiguration Items Microsoft Exchange 2000 Operations Guide Version Configuration Management Relationships Hardware Server Printer Software Exchange Hotfix Nine Configuration Items with Relationships Between Them Defining Configuration Items Maintaining the Configuration Management DatabaseConfiguration Management and Exchange Change Management Ownership Exchange System Policies BackupAdministering System Policies Security Summary Enterprise Monitoring Performance Monitoring System Monitor Exchange 2000 Objects and Counters to Monitor Exipc Service or Resource Performance Object Smtp MSExchangeIS Information Store CountersSmtp Server MSExchangeIS Mailbox and MSExchangeIS Public MSExchangeMTA and MSExchangeMTAConnections MSExchangeIM Virtual Servers Windows 2000 Objects and Counters to MonitorMSExchangeAL Subsystem Object Counter Exchange Comments Subsystem Object Counter Exchange Comments Centralized Monitoring Event Monitoring Event Viewer Log Files Centralized Event Monitoring Availability Monitoring Adding Services to the Default ConfigurationMonitoring and Status Tool Monitoring Resources Notifications Status Centralized Availability MonitoringDisabling Server Monitoring Client Monitoring Summary Page Chapter Start Point Chapter End Point Protection Against Hacking Firewall Operations Maintaining Firewall Availability Monitoring Against Hacker Intrusion Source Destination Service Protocol and portAnti-Virus Measures Dealing With Security Breaches Staying Current Dealing With Virus Infection Blocking Attachments at the Client File Extensions and File Types File Extension File Type Disaster Recovery Procedures Backing Up Protection Offline Backup Disk Imaging Restoring Recovering Individual MessagesRecovering Lost Mailboxes To connect an Exchange 2000 mailbox to another user Recovering Exchange Stores and Storage Groups Full Exchange Server Recovery Recovering Exchange After Active Directory Failure Recovery Testing Alternate Server Recovery Summary Page Support Providing Support for End Users Reducing End User Support Costs Support Problem Reporting Dealing with User Problems Notifying Users Exchange Problem Management Support Summary Active Directory Connector ADC Access Control Entry ACEAccess Control List ACL Active Directory Services Interfaces Adsi Adsi Edit Administration groupActiveX Data Objects ADO Asymmetric Cipher Collaboration Data Objects CDO for Windows CiphersClear item Collaboration Data Objects Conference Technology Provider CTP Conferencing Management Service CMSConfiguration Connection Agreement ConfigCA Connection Agreement CA Domain tree DSAccess Domain modeDomain Name Services DNS Domain controller Encryption Exchange Conferencing Services ECSEnterprise Epoxy Extensible Storage Engine ESE also known as JET Event ServiceExipc formerly known as Epoxy Forest also known as enterprise Hash Functions Installable File System IFSGroup Instant Messaging IM Joint Engine Technology JET Internet Messaging Access Protocol version 4 IMAP4Lightweight Directory Access Protocol Ldap Link State Algorithm LSA Messaging Application Programming Interface Mapi Metabase update serviceName Service Provider Interface Nspi Metabase Policy Outlook Web AccessOpaque item Post Office Protocol version 3 POP3 Resource Recipient Update Service RUSRemote Procedure Calls RPC Resource mailbox Routing group Routing Group Connector RGCRouting service Routing Engine Security principal SchemaSecure Hash Algorithm version Simple Message Transfer Protocol Smtp Storage group Site Replication Service SRSSite Consistency Checker SCC also known as the Skcc Store User System attendant120 User Principal Name UPN Web Storage System Web-DAV509