Microsoft Directory Server
Saturday, July 9th, 2011Microsoft Directory Server
All About Exchange Server Database Corruption and EDB Recovery
Microsoft Exchange Server users transaction-based and fault-tolerant database for storing emails and directory information before this is applied to database. When a power failure or any other abnormal server failure takes place, the Exchange Server uses transaction log files for reconstructing data, which is already taken by Exchange Server but not yet written to database. But in some situations, the database failure might become very critical and can not be resolved in normal ways. At this point, your valuable data become inaccessible and data loss situations occur that lead you to Exchange Repair.
Exchange Server Database (EDB) Components
The EDB file is made up of server components, based on the standard database technique. Entire system bank on an embedded database engine, which lays out structure of disk of the Exchange Server and organizes memory. Major components of EDB file are as give below:
a) Information Store: This is the key component of Exchange Server. It has two separate database: private information store and public information store. It works with MAPI (Messaging Application Programming Interface) and database engine to make sure that all operations are stored on server hard drive.
b) JET Database Engine: Exchange databases are based upon JET format that uses log files to maintain and track information. It is a 32-bit multi-threaded database engine, which combines performance and speed with other powerful features for improving transaction-based processing abilities.
Exchange Server Database Corruption
Like other database, EDB might also experience corruption at some point, which needs the system to try to get back to consistent state. The corruption could occur due to virus infection, improper system shutdown, application malfunction, user errors and missing database objects. There are two main types of database corruption, which require Exchange Repair to be resolved:
(i) Logical Corruption: It occurs due to damaged or missing database objects such as database engine failure and Information Store corruption. This type of corruption could also occur at application level in folders, mailboxes, messages and attachments.
(ii) Physical Corruption: This type of corruption occurs when entire database gets damaged on the hard drive. It is very easy to identify.
In order to overcome the corruption situations, Exchange Server provides two repair tools- Eseutil and Isinteg. These utilities allow you to carry out Exchange Server Recovery by repairing and restoring corrupt database in some situations, but these programs does not work in case of severe database damage.
In such circumstances, Exchange Server Repair applications come for your help to scan the damaged database thoroughly and extract all of the mailboxes and data from it. These tools are quite easy and safe to use.
Stellar Phoenix Mailbox Exchange Recovery is the most advanced and powerful Exchange repair application to ensure absolute recovery of your inaccessible data from EDB file of Exchange Server 2003, 2000 and 5.5. This software is designed for Microsoft Windows 2003, XP and 2000.
About the Author
Axel Culver has passion for writing Technical article. He is right now writing articles related to Product like Exchange Repair software and Exchange Recovery. He is a professional writer.
For more information, visit: MS Exchange Repair
NetMeeting not letting me connect to Yahoo! directory?
I am trying to connect to the Yahoo! directory using Microsoft NetMeeting,but it says this message:
NetMeeting cannot find the server you are requesting. Please click Tools-Options and check the server.
I am using Version 3.0.
The address that you put in for yahoo's server is probalby incorrect. Not sure what you put in, but it should be something like $%#.yahoo.com . I don't know exactly what it is for the directory, but for emails it's SMTP.yahoo.com and POP3.yahoo.com
Microsoft Directory Server
How to install Active Directory on Microsoft Windows Server 2008 Active Directory Server 2008
New Features In Microsoft Exchange Server 2010
Exchange Server 2010 offers better performance, more reliability and security, simplified administration and achieves end users requirements. Microsoft is offering lots of new features with this new edition, but also deemphasized few features which were available in the previous versions. This article highlights these features to understand our readers these new offerings from the Microsoft Exchange Server 2010 so as to let readers to understand how this edition of Exchange server fit into their requirements.
1) New Database Availability Groups (DAG) replacing Clusters. Clusters are no longer required.(But quorum and heartbeat still being used). Local Continuous Replication is no more.
2) No Streaming files.
3) OWA/Mailbox connection, Directory Access, Public Folder connection and MAPI requests are forwarded to the RPC Client Access Services role, unlike in Exchange Server 2007, where all client connection requests except MAPI, uses the Client Access Server (CAS) role.
4) New Exchange Control Panel for users so that they can change their personal information from OWA like, contact details etc.
5) 64-bit version with improved IOPS.
6) Shadow Redundancy feature where message deleted from mail.que will be delayed until Exchange Server 2010 verify that message has completed all the hops and then message will be deleted. If any of the hop is failed, message will be resubmitted for delivery.
7) Exchange Server 2010 can be managed remotely across the network by using PowerShell V2.
8) Legal Hold feature which keeps users' deleted and edited items from their mailbox and Personal Archives. It also notifies users that hold has been placed on mailboxes. Hold on public folders is not supported till now.
9) MailTips feature notify the senders while he is composing the message that recipient is out of the office.
10) End-to-end message tracking.
11) Support of disabling TLS for WAN topologies.
12) Fully integration with Active Directory Right Management System.
13) Message throttling ensures that message rate is not exceeded that it is allowed to the users, regardless of the IP address.
14) Voice recognization support.
15) Support to send mails from Exchange Management Console.
16) Sharing of Calendar with users in different organization.
17) Support of multi-mailbox search.
18) Single Instance Storage(SIS) removed. New Message Retention Management feature introduced.
About the Author
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Microsoft Directory Server
