![]() An analysis of a user's mailbox properties should be taken up prior to that migration. As an Administrator or consultant who is conducting a migration, making for the best user experience should also play into the conversation. Sometimes, these migrations go smoothly, sometimes there are bumps, but many times the migrations can be made smoother for administrators the more they are aware of the data they are migrating. $Mailboxes | Sort-Object MailboxSizeMB -Desc | Select PrimarySMTPAddress, MailboxSizeMB | Export-Csv -NoType “C:tempMailboxessize.Organizations are and have been migrating their Exchange Server on-premises mailboxes to Exchange Online for quite some time now. #REM – to export this out - do the following ? enjoy (see the part where it says “Select” you can add additional fields like ALIAS etc to this) $Mailboxes | Sort-Object MailboxSizeMB -Desc | Select PrimarySMTPAddress, MailboxSizeMB $Mailbox | Add-Member -MemberType “NoteProperty” -Name “MailboxSizeMB” -Value ((Get-MailboxStatistics $Mailbox).()) $Mailboxes = Get-Mailbox -ResultSize Unlimited i didnt come up with this, i just found it ***if this is what you were looking for, please click this link and give the guy some credit. once you have the data on all your mailboxes, and the output can be IMPORTED into excel you can do all your sorting etc and delete whatever you dont want The other half of the information you need is in Get-Mailbox :- found answer in following link. Problem is, Get-MailboxStatistics output just a display name – not unique and cant really be used as such. Hopefully that answers your question Faisal, but once again you’re welcome to download and use the Get-MailboxReport.ps1 script for this type of mailbox size reporting. Sue Andress 1.153 MB (1,209,401 bytes) Example #2 – Select top 100 mailboxes by totalitemsize and export to CSV file C:\>Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | Select-Object DisplayName,TotalItemSize -First 100 | Export-CSV top100mailboxes.csv Select-Object to return only the desired number of results, and optionally to return only the specific properties we want to see in our final outputĮxample #1 – Select top 30 mailboxes by totalitemsize C:\>Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | Select-Object DisplayName,TotalItemSize -First 30.The output from Get-MailboxStatistics piped into Sort-Object.The output from either of the above cmdlets piped into Get-MailboxStatistics.A Get-Mailbox or Get-MailboxDatabase depending on the scope of our investigation.We can sort on that property using Sort-Object, and then use Select-Object to only return the top X number of results.Īs a one-liner this breaks down as follows: Of particular interest if we want to find the largest mailboxes is the TotalItemSize property. StorageLimitStatus Property System.Nullable`1[[.StorageLimitStatus, Microsoft.E. RunspaceId NoteProperty System.Guid RunspaceId=8da06b60-9483-4d24-9930-13567c0fd94eĪssociatedItemCount Property System.Nullable`1[[System.UInt32, mscorlib, Version=2.0.0.0, Culture=neutral, P.ĭatabase Property Database PSComputerName NoteProperty System.String PSComputerName= SuppressDisposeTracker Method System.Void SuppressDisposeTracker() GetProperties Method System.Object GetProperties([Microsoft. GetDisposeTracker Method GetDisposeTracker() ![]() TypeName: .MailboxStatisticsĮquals Method bool Equals(System.Object obj) C:\>Get-Mailbox Alan.Reid | Get-MailboxStatistics | Get-Member We can take a closer look at these properties using Get-Member. Get-MailboxStatistics returns an object made up of various properties that describe the mailbox statistics for the mailbox. ![]() You might already be familiar with the Get-MailboxStatistics cmdlet, for example: C:\>Get-Mailbox Alan.Reid | Get-MailboxStatisticsĭisplayName ItemCount StorageLimitStatus LastLogonTime In fact, it is why I wrote the Get-MailboxReport.ps1 script, which I recommend you download.īut, in the interests of learning about PowerShell, let’s also take a look at doing it manually. Fortunately this is quite a simple report to generate using PowerShell. I’m often asked to produce such lists by managers when issues of server capacity get raised. Reader Faisal asks about retrieving a list of the top 30 mailboxes in order of size.įinding the top (or largest) mailboxes in the Exchange Server organization is a fairly common requirement. ![]()
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