<div>
If you want to check from EMC.<br />
<br />
Recipient Configuration =&gt;&gt; Mailbox. <br />
<br />
Then go to the View menu &gt;&gt;&nbsp;Add/Remove Columns.<br />
<br />
Add the &quot;Database&quot; column. Click Ok. You can then sort this column alphabetically.
</div>


If you want to check from EMC.

Recipient Configuration =>> Mailbox.

Then go to the View menu >> Add/Remove Columns.

Add the "Database" column. Click Ok. You can then sort this column alphabetically.

<div>
I did do that and saw no mailbox associated with that database. &nbsp;<br />
<br />
Should I un-mount the database first to see if that causes any issues? &nbsp;I know that you can name a DB anything, however this setup was a port over from Exchange 2003 and the database of concern is called Archive1. &nbsp;We do not do any archiving here.
</div>


I did do that and saw no mailbox associated with that database.  

Should I un-mount the database first to see if that causes any issues?  I know that you can name a DB anything, however this setup was a port over from Exchange 2003 and the database of concern is called Archive1.  We do not do any archiving here.

<div>
Ran the command<br />
<br />
and it appears that all my Arbitration Mailboxes are located on a database that I am keeping.<br />
<br />
Si I feel confident to proceed<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/04_w17/846286/Capture123.PNG" target="_blank" class="file-inline" title="Output (6 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Capture123.PNG</a>
</div>


Ran the command

and it appears that all my Arbitration Mailboxes are located on a database that I am keeping.

Si I feel confident to proceed
Capture123.PNG [https://filedb.experts-exchange.com/incoming/2014/04_w17/846286/Capture123.PNG]

Capture123.PNG

<div>
Yes, I would say you are good to dismount.
</div>


Yes, I would say you are good to dismount.

<div>
I dismounted it - and all is well in IT Land. &nbsp;Thank you for your help.
</div>


I dismounted it - and all is well in IT Land.  Thank you for your help.

<div>
<div class="content wysiwyg-content">
I would like to confirm that there are NO mailboxes associated with a datastore/database before I unmount it. &nbsp;I am trying to cleanup what an old admin did.
</div>
</div>


I would like to confirm that there are NO mailboxes associated with a datastore/database before I unmount it.  I am trying to cleanup what an old admin did.

Confirm there are no mailboxes associated with a Database Exchange 2010

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

Windows OS

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.