Best practice on mailbox database size & we need how many server for deployment exchange server 2013
Dear all,
We have an server that runs Microsoft exchange server 2007 with the following specification:
4 servers: Hub&CAS1 & Hub&CAS2 & Mailbox1 & Mailbox2
Operating System : Microsoft Windows Server 2003 R2 Enterprise x64
6 mailbox databases
1500 Mailboxes
We need to upgrade our exchange server from 2007 to 2013 to fulfill the following requirment:
I want to upgrade the exchange server 2007 to exchange server 2013 and implement the following details:
1500 mailboxes
10GB or 15GB mailbox quota for each user
How many
servers and databases are
required for this migration<ins cite="mailto:Mohammad%20Ashouri" datetime="2014-05-18T22:41"></ins>?
Number of the servers:
Number of the databases:
Size of each database:
Many thanks.
You will also need to check server role requirement in exchange 2013. Please go through this link to calculate the server role requirement : http://blogs.technet.com/b/exchange/archive/2013/05/14/released-exchange-2013-server-role-requirements-calculator.aspx
2TB is recommended maximum database size for Exchange 2013 databases.
Here is the complete checklist to upgrade from exchange 2007 to 2013 : http://technet.microsoft.com/en-us/library/ff805032%28v=exchg.150%29.aspx
Meanwhile, to reduce the risks and time consumed during the completion of migration process, you can have a look at this proficient application(http://www.exchangemigrationtool.com/) that would also be
a good approach for 1500 users. It will help you to ensure the data security during the migration between exchange 2007 and 2013.
Similar Messages
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What is the best practice on mailbox database size in exchange 2013
Hi,
does anybody have any links to good sites that gives some pros/cons when it comes to the mailbox database sizes in exchange 2013? I've tried to google it - but hasn't found any good answers. I would like to know if I really need more than 5 mailbox databases
or not on my exchange environment.Hi
As far as I know, 2TB is recommended maximum database size for Exchange 2013 databases.
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Terence Yu
TechNet Community Support -
Hi,
I have DAG enabled Exchange Server 2010 installed with three mailbox databases having sizes 282GB,162GB and 129GB respectively. I have started with a total of 250GB in 2010 and now it has reached a size more than 650GB.
It has become very difficult to take the backup of such huge database files now and restoring it in case of a DR.
Presently I have not enabled online archiving in any of these mailboxes mainly because most of the PCs are installed with outlook 2007 which doesn't show online archive.Of course OWA is another candidate to see those mails.
Please suggest a best practice to reduce the size of these mailbox databases without losing any of the mails.
Thanks
ThomasAs mentioned above, Exchange database files do not shrink.
If you do a defrag, then since you have copies of this DB in the DAG then you have to reseed. take a look at this
http://blogs.technet.com/b/rmilne/archive/2013/08/23/offline-defrag-and-dag-databases_2c00_-oh-my_2100_.aspx
Cheers,
Rhoderick
Microsoft Senior Exchange PFE
Blog:
http://blogs.technet.com/rmilne
Twitter: LinkedIn:
Facebook:
XING:
Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose. -
Mailbox database size before & after backup
Hi there
i recently made a similar thread and someone told me that i should do it here so here is my issue :
i've been assigned to do a specific report related to exchange and its backup
so what we want is a report that would give us the global size of all our mailbox databases before and after the backup ( even the size of the logs before and after)
(example : we have a mailbox database X: , we need to go inside the data folder, and retrieve the size of the .edb
then do the same thing with the logs, go inside the logs folder, and retrieve the logs size )
i was wondering if anyone ever managed to pull a script that does similar things, given the fact that i ve never worked with powershell and my knowledge is kinda limited in that area
ThanksHi Amassuo,
for finished scripts that do things, check out the
gallery. If you want to learn powershell (I might be biased, but I highly recommend it), check out the
learning center.
Regarding your specific issue, you can check the free space on a specific disk by running this powershell command:
Get-WmiObject win32_logicaldisk -Filter "DeviceID = 'C:'" | Select -ExpandProperty FreeSpace
Comparing before/after will get you the space differential (adapt drive letter in filter as needed).
Cheers and good luck with your script,
Fred
There's no place like 127.0.0.1 -
Moving the mailbox database copy from one exchange server to another exchange server 2010 DAG
Hello Team
is it possible to the move the passive copy of database and logs from one server to another exchange server in the same DAG with out removing and deleting the mailbox database copies in exchange 2010
normaly procedure is
Remove the mailbox database copies and manually delete the .edb files and logs from the physical location and re-add the mailbox database copy to the new server in the DAG.
is that any way to achieve to move the passive database copy to another exchange 2010 server in the same DAG ?From your note, you appear to have a two-member DAG (with a server hosting your active database, and a second hosting the passive copy), and you want to move your passive database copy from the current passive server to another. Your note
about what "the normal procedure is" isn't 100% correct - there are many ways to handle this task, and all can be considered "normal". Why not just add the third server to the DAG and
add a database copy on that third server? Once it is fully seeded, you can remove the current passive copy. This way, you never lose your redundancy.
Yes i can add the third and fourth serve in DAG , but i cannot add the mailbox database copies to the 3rd and 4th mailbox server in DAG as am using RTM version of exchange 2010 which is allowing to have only 5 database inclding mailbox datbase copies
and also currently my lab setup is two member dag (with a server hosting your active database,
and a second hosting the passive copy) in the same site named SITE A
and recently i have created new SITE B and included the 3rd and 4th DAG members in the same DAG
i want the mailbox database copies from the mailbox server database in SITE A to
Mailbox server database in SITE B as passive copy
That is why i want to move the mailbox database without deleting / removing it manually
Hope you understand my situation! -
How To Setup A Local Exchange Server Integrated With Office365 For A Single Mailbox
Hello,
We recently migrated to Office365 but had an issue since we need more than 16 simultaneous connections to a single mailbox. Because of this, we need to deploy a local Exchange Server that will be used to host a single mailbox that requires up to 500 simultaneous
connections for a Contact Center application. I'm looking for information on how to setup the local Exchange Server to basically create a local instance of a mailbox hosted on Office 365. So we can have our application open the numerous simultaneous connections
to our local server which will then connection to Office 365 to send/receive email through the mailbox hosted on Office365.
Please let me know if you have any information or resources you can direct me toward.
Thanks,
ChrisHi,
To deploy local Exchange server integrated with Office 365, we can depend on Exchange Server Deployment Assistant:
http://technet.microsoft.com/en-us/exdeploy2013/Checklist?state=2419-W-AAAAAAAAQAAAAAEAAAAAAAA%7e
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Is there a size limit to how many emails in Mail?
Is there a size limit to how many emails in Mail?
I have recently converted from MS Outlook 2007, where the maximum storage is 20 GB.
Is there any such limit in Mail?
In other words, I currently have 30,000 inbox emails and 20,000 sent emails. Together, my Outlook PST file is 2 GB. Would Mail prevent me in any way, or could I keep as many emails as my hard drive will permit?
I thank you all in advance for any thoughts and/or suggestions.Harold,
Have you checked this in Synchronization Preview? Did you see any error?
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how many attempts ( for passcode) is needed to disable iPad air? it is stolen and I have important information in it.
If the iPad was running iOS 7, the thief/finder will not ever be able to use it.
iCloud: Find My iPhone Activation Lock in iOS 7
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Report to police along with serial number. Change all your passwords.
These links may be helpful.
How to Track and Report Stolen iPad
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HT1222 need how many time to updates 6.1
need how many time to updates 6.1
It depends entirely on how you do the update, and what you're updating from. By the way, the latest version is 6.0.1, not 6.1.
I would say given no additional information it might take anywhere from 10 minutes to 2 hours. -
Hello,
is there any limit for size of mailbox database file (.edb)? I found in some articles, that limit is 2TB. What happen, if this limit is reached?
Thanks
Br,
JanThe maximum supported size for a database is 16 TB. However, it's best practice to keep it around 2TB assuming your going with a DAG. I like to start out with 1 TB, and grow it from there if i really need to.
https://technet.microsoft.com/en-us/library/ee832792(v=exchg.150).aspx#Best
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread -
My Exchange setup:
Exchange 2010 Enterprise
2 mailbox servers
2 CAS, 2 HT
12 mailbox databases. The total of all databases combine is about 2TB. The largest mailbox databases are 530GB, 250GB, and 196GB. Are this over the supported recommendations?
bl2TB, look at the second article but best practice 200GB or less
http://social.technet.microsoft.com/Forums/exchange/en-US/48431bab-4049-47db-9a84-359d5123d247/what-is-the-maximum-supported-database-size-in-exchange-2010-
http://social.technet.microsoft.com/Forums/exchange/en-US/f96892b3-8e2d-4eef-b64a-4cbc0097396d/ideal-size-for-exchange-mailbox-database -
Best practice of expanding partition size
Hi,
I am just wondering what's the best practice of expanding a partition. Currently the server I am working in has the partitions configure as below:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup01-LogVol00
5046848 4630796 155548 97% /
/dev/sda1 101086 50293 45574 53% /boot
tmpfs 4087296 2388360 1698936 59% /dev/shm
/dev/sda3 5162828 141544 4759024 3% /tmp
/dev/sdb1 1923068 734956 1090424 41% /fs0
/dev/sdb2 1923084 70908 1754488 4% /fs1
/dev/sdc1 89406276 68095788 16768916 81% /fs2
/dev/sdc2 13804204 7061912 6041056 54% /fs3
/dev/sdb3 6474880 4509556 1636416 74% /fs4
Let's say I want to increase /fs2 which is /dev/sdc1 by another 15GB. I can go into the VMware and increase the disk size by 20GB but how will I go about increasing the partition size without affecting other partitions?
Most of the instructions I see online basically creates a new partition but I want to avoid creating a new partition. So is it possible to do it?
Thanks.You cannot increase a partition on a disk without affecting other partitions on the same disk unless it is the last partition. You will have to completely re-organize your partitions and restore from backup. You can however extend partitions that are under LVM control by adding a free LVM controlled partition or disk and assign it to any existing LVM volume in order to increase it's capacity. There is plenty of documentation and info available on the web. If you plan to increase your LVM root volume you need to boot form external media.
Since you are using VMware there is actually no need to create multiple partitions on any disk. You can simply put each partition on it's own virtual disk. Then after you increase the underlying virtual disk, you can use "lvextend" for devices under LVM, or "gparted" to modify the partition, and use the "resize2fs" command to adjust the file system, even while the mounted volume is online. -
Mailbox Database Size/White Space Reduction in a DAG
I have several large databases in which I'm moving mailboxes off of in an attempt to prevent my LUNs from running out of disk space. As well, I have several mailboxes of users who have left the company. My questions are as follows:
1. When I run remove-mailbox -id "some mailbox" -permanent $true, the mailbox is deleted from Exchange relatively instantly. Will Exchange recoup the white space that is left behind after the mailbox has been deleted so that the
database shrinks in size? Or will it just start writing over the white space rather than growing the size of the database?
2. Perataining to mailboxes that have been moved, if "Keep Deleted Mailboxes for" is set to 4 days on the database that holds mailboxes that I'm moving off, will the database hold onto the mailbox (even though it has successfully been moved to
another database) for the duration of the "Keep Deleted Mailboxes for" setting? Or will the mailbox be hard deleted after the move completes successfully?
3. As part of Online Maintenance, will Exchange defrag a databse and decrease the white space, thereby shrinking the database size or will I have to take it offline to do that?
4. What are the procedures to perform an Offline Defrag of an Exchange Databse? How risky is this?Hello,
To answer your questions:
1. When and online database defrag completes a pass on the database it will reclaim this as whitespace in the database. It will not however reclaim space on the disk by shrinking the .edb file. An offline defrag is required for that.
2. Moved mailbox will not be hard deleted until the 4 day retention period has past, unless you manually purge them using Remove-StoreMailbox.
3. Related to the answer for number 1. Exchange will fill whitespace as mailboxes grow, but it will not reclaim disk space.
4. In a DAG you will you need to dismount the mailbox database and run eseutil /d against the active database copy. This is a relatively low risk procedure, but requires databases to be offline thus interrupting mailbox access. It can also
take quite along time depending on the database size. The rate of defrag estimated by MS is 9 GB/hr. Here is a reference:
http://support.microsoft.com/kb/192185/en-us
For these types of situations my preference (If disk space allows) is to move all mailboxes to a fresh database then delete the database with excessive white space -
What is the best practice to get database connection?
What are best best practices in database connection to follow?
式 可 以 采 用Class.forName 方 法 显 示 加 载, 如 下 面 的 语 句 加 载Sun 公 司 的JDBC-ODBCbridge 驱 动 程 序:
Class.forName(�sun.jdbc.odbc.JdbcOdbcDriver�);
然 后 运 用DriverManager 类 的getConnection 方 法 建 立 与 数 据 源 的 连 接:
Connectioncon=DrivenManagerget-
Connection(url);
该 语 句 与url 对 象 指 定 的 数 据 源 建 立 连 接。 若 连 接 成 功, 则 返 回 一 个Connection 类 的 对 象con。 以 后 对 这 个 数 据 源 的 操 作 都 是 基 于con 对 象 的。
执 行 查 询 语 句。 本 文 介 绍 基 于Statement 对 象 的 查 询 方 法。 执 行SQL 查 询 语 句 需 要 先 建 立 一 个Statement 对 象。 下 面 的 语 句 建 立 名 为guo 的Statement 对 象:
Statement guo=con.creatStatement();
在Statement 对 象 上, 可 以 使 用execQuery 方 法 执 行 查 询 语 句。execQuery 的 参 数 是 一 个String 对 象, 即 一 个SQL 的Select 语 句。 它 的 返 回 值 是 一 个ResultSet 类 的 对 象。
ResultSet result=guo.execQuery(�SELECT*FROM A�)
该 语 句 将 在result 中 返 回A 中 的 所 有 行。
对Result 对 象 进 行( 下 转76 页)( 上 接73 页) 处 理 后, 才 能 将 查 询 结 果 显 示 给 用 户。Result 对 象 包 括 一 个 由 查 询 语 句 返 回 的 一 个 表, 这 个 表 中 包 含 所 有 的 查 询 结 果。 对Result 对 象 的 处 理 必 须 逐 行, 而 对 每 一 行 中 的 各 个 列, 可 以 按 任 何 顺 序 进 行 处 理。Result 类 的getXXX 方 法 可 将 结 果 集 中 的SQL 数 据 类 型 转 换 为Java 数 据 类 型 -
Hi,
VS2013, SQL Server 2012 Express LocalDB, EF 6.0, VB, desktop application with an end user database
What is a reliable method to follow when there is a schema change for an end user database used by a deployed application? In other words, each end user has their own private data, but the database needs to be expanded for additional features, etc.
I list here the steps it seems I must consider. If I've missed any, please also inform:
(1) From the first time the application is installed, it should have already moved all downloaded database files to a separate known location, most likely some sub-folder in <user>\App Data.
(2) When there's a schema change, the new database file(s) must also be moved into the location in item (1) above.
(3) The application must check to see if the new database file(s) have been loaded, and if not, transfer the data from the old database file(s) to the new database file(s).
(4) Then the application can operate using the new schema.
This may seem basic, but for those of us who haven't done it, it seems pretty complicated. Item (3) seems to be the operative issue for database schema changes. Existing user data needs to be preserved, but using the new schema. I'd like
to understand the various ways it can be done, if there are specific tools created to handle this process, and which method is considered best practice.
(1) Should we handle the transfer in a 'one-time use' application method, i.e. do it in application code.
(2) Should we handle the transfer using some type of 'one-time use' SQL query. If this is the best way, can you provide some guidance if there are different alternatives for how to perform this in SQL, and where to learn/see examples?
(3) Some other method?
Thanks.
Best Regards,
AlanHi Uri,
Thank you kindly for your response. Also thanks to Kalman Toth for showing the right forum for such questions.
To clarify the scenario, I did not mean to imply the end user 'owns' the schema. I was trying to communicate that in my scenario, an end user will have loaded their own private data into the database file originally delivered with the application.
If the schema needs to be updated for new application features, the end user's data will of course need to be preserved during the application upgrade if that upgrade includes a database schema change.
Although I listed step 3 as transferring the data, I should have made more clear I was trying to express my limited understanding of how this process "might work", since at the present time I am not an expert with this. I suspected my thinking
is limited and someone would correct me.
This is basically the reason for my post; I am hoping an expert can point me to what I need to learn about to handle database schema changes when application upgrades are deployed. For example, if an SQL script needs to be created and deployed
then I need to learn how to do that. What's the best practice, or most reliable/efficient way to make sure the end user's database is changed to the new schema after the upgraded application is deployed? Correct me if I'm wrong on this,
but updating the end user database will have to be handled totally within the deployment tool or the upgraded application when it first starts up.
If it makes a difference, I'll be deploying application upgrades initially using Click Once from Visual Studio, and eventually I may also use Windows Installer or Wix.
Again, thanks for your help.
Best Regards,
Alan
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