Error Log Disk Full Starting Storage Group Exchange 2007
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Exchange 2010 Database Dismounted After Reboot
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on 13 Jan. 2005] We would like to extend a warm welcome to Microsoft MVP Erik Rozman to our team of authors exchange 2010 purge transaction logs as he presents his first article to MSExchange.org readers. In the following
Exchange 2010 Logs Filling Up
document I will describe preventive measures that should help you avoid running out of disk space and in
Exchange 2010 Database Dismounted Event Id
addition I will also describe possible remedies if this has (gasp) already happened. I find Exchange server to be a very complicated system and as in most complicated systems the https://support.microsoft.com/en-us/kb/321825 most "trivial things" may bring it to its knees. One of these "trivial things" is lack of disk space on the disk that holds the log files for a specific storage group. When the Information Store identifies lack of disk space for a storage group's logs it will dismount the stores inside the respective storage group. The last sentence http://www.msexchange.org/articles-tutorials/exchange-server-2003/planning-architecture/Exchange-log-disk-full.html I wrote may sound very calm yet when this happens on one of the Exchange servers you are responsible for you will be anything but calm. Once the stores in the storage group are dismounted, users are disconnected from their precious information (mail, calendars, contacts…) and they will come waving pitchforks… Before we delve into our main subjects I think it is important to understand the exact role that log files have. Describing the Exchange storage system A very oversimplified analysis of an Exchange server may state that that an Exchange server is nothing more then a database server that has some exotic extensions through which users can manipulate their data. This analysis (even though oversimplified) is not far from truth, and it emphasizes the importance of the database that stores the user's information on an Exchange server. Exchange server uses a database technology called ESE (Extensible Storage Engine), this database technology is based on the JET (Joint Engine Technology) database engine. The ESE engine employs several files upon which the database is built (I have on
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us http://serverfault.com/questions/85244/thousands-of-log-files-in-exchange-2007-server-folder Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can https://www.simple-talk.com/sysadmin/exchange/exchange-database-technologies/ answer The best answers are voted up and rise to the top Thousands of .log files in Exchange 2007 Server folder up vote 4 down vote favorite I'm a bit of an Exchange admin noob so I don't know if this is normal, exchange 2010 but on our Exchange 2007 server under C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\ there are 30,000 1MB .log files. I don't know if those should be there or not, but they keep multiplying like little jackrabbits. I've so far resisted deleting them as I'm sure something would break, but it's come to the point now where our 80GB disk is completely full up and Exchange has stopped receiving messages. My best guess is that these are transaction logs and would be useful in rebuilding the database should something 2010 database dismounted go awry, but 30GB of transaction logging seems a bit excessive. Is there a way to limit it or is that even a good idea? And of course did I completely miss the point? exchange-2007 share|improve this question asked Nov 16 '09 at 18:26 maik 6532721 add a comment| 3 Answers 3 active oldest votes up vote 5 down vote accepted Those logs are transaction files. Do not delete them. I'm curious here, did you install this Exchange server on your own? Placing the storage group on the same disk volume as your OS, swap file etc is absolutely not the recommended configuration for Exchange server. You should ASAP add more storage to your server, and place the Exchange storage on it. Please read the following article: Exchange log disk is full, Prevention and Remedies share|improve this answer answered Nov 16 '09 at 18:31 pauska 17.2k44272 I did indeed do that. I'm a private contractor and this is my first time using Exchange 2007. We have one server running ESXi with 4 VMs including the Exchange Server. It sounds like I should have created at least a separate partition for the log disk when I set it up. I'll give that article a read, thanks. –maik Nov 16 '09 at 18:38 1 In addition, you are either not backing up Exchange or they are not working correctly. I certainly hope this is not a production server. –Doug Luxem Nov 16 '09 at 18:54 2 Not too sound too elitist here maik, but p
Database Technologies 22 August 2008Exchange Database TechnologiesOne of the most misunderstood technologies in Exchange Server, regardless of its version, is the database technology. Most people, even Exchange administrators know it is something to do with ESE and tools like ESEUTIL, but once it's running they leave it that way for the rest of their lives. It's too difficult and you'd better not touch it in case it breaks.... 66 10 Jaap Wesselius Exchange Database Technologies In this article I'll explain some of the fundamentals of the Exchange Server database technology. The primary focus is on Exchange Server 2007, but when appropriate I'll refer to Exchange Server 2003. This article is the first in a series about Exchange database technologies, backup, restore and disaster recovery. What's on the disk? When you've installed Exchange Server 2007 you will find some database files on the C:\ drive, typically in "C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\" as can be seen in figure 1. Figure 1. Database files in a standard Exchange setup We can see several files in this directory: mailbox database.edb - this is the actual mailbox database where all the mailboxes are hosted. One or more mailbox databases can be hosted in one directory; E00.log and subsequent log files - these are log files that are used by Exchange server for transactional processing of all information; e00.chk - a checkpoint file that keeps track of the relation between the information in the log files and in the database; E00tmp.log - a temporary log file; E00res00001.jrs and E00res00002.jrs - temporary reserved log files used by Exchange server in case a disk full situation occurs. These files belong together and create a so-called "Storage Group". During the installation of Exchange Server one database is created in a Storage Group. In Exchange 2007 the Public Folder database is created in a second Storage Group. When replication technology (like LCR, CCR or SCR) in Exchange 2007 is used than only one database per Storage Group can exist. If no replication technology is used, up to five databases can be created in each Sto