MySBfiles is a network storage option for all students, faculty, and staff. Up to 500 MB of data can be stored in your personal MySBfiles which is backed up regularly on an automated basis by University servers. You can access your MySBfiles from on or off campus using a Web browser. 

Note: Users on the UHMC domain will use their Home Directory ("U Drive") instead of MySBfiles. For information please call the UHMC Help Desk at 4-HELP.

This system is reported to be online
This service is scheduled for maintenance on: 10/18/2015 6:00 am

Advantages of MySBfiles

Files saved on your MySBfiles are accessible from any computer with Internet access.

The files are protected by anti-virus software.

The files are stored on University servers and are not affected if your machine crashes or is stolen.

You can recover previous versions of your documents by using the Snapshot feature of MySBfiles.

Leaving the University?

IMPORTANT: Since this is your personal data, please make sure you copy any files that you want to take with you before you leave the University. All of your files will be deleted once you leave (transfer, graduate, resign or retire) from the University.

Frequently Asked Questions

How do I connect to MySBfiles using Windows 8?

Unlike mapping your MySBfiles on an older Windows operating system, mapping a network drive to your MySBfiles on a Windows 8 computer is different.  In order to map your MySBfiles on a computer running Windows 8, you will need to disable "Secure Negotiate" because the MySBfiles servers do not support it.

Please note: You can only map a network drive to your MySBFiles from an on-campus computer that is physically connected to the campus network.

1. In Windows Explorer, type PowerShell in the address bar to search for PowerShell

2. In the list of search results, press Shift Right-Click "Windows PowerShell" and select "Run as Administrator"

3. Next, type the following command and press Enter

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" RequireSecureNegotiate -Value 0 -Force

4. Once you disable "Secure Negotiate," open My Computer and select Map Network Drive under Tools

5. In the Map Network Drive window, select any available Drive and enter the following under Folder:

\\\~NetID (After the tilde (~) replace "NetID" with your NetID, and be sure to use the backslash (above the Enter key).)

6. Lastly, enter the following information to authenticate:

Username:\NetID (Replace "NetID" with your NetID)

Password: Your NetID password

I deleted a file from MySBfiles or my department shared folder. How do I get it back?

"Snapshots" of MySBfiles and Department Shared Folders are saved every few hours.  You can access a document you altered or deleted from these snapshots.  

For MySBfiles users:  Staff and faculty that have MySBfiles mapped on their work computer can follow these directions as well.  

Navigate to your Department Shared folder or MySBfiles:

1.  On the Desktop, click the Start button and click (My) Computer 
or press the
Windows Logo button + E

2.  You should see your Shared Folder and MySBfiles under Computer.  

*For MySBfiles users who do not see
~NetID (\\
listed under Computer, then you do not have MySBfile mapped on your computer.  Call Client Support for help! 

3.  Navigate to the folder that contained the file you deleted or edited, but do not open it.

4.  Right-click on the folder and select Restore Previous Version--it may take a few moments to appear.


5.  Click to open the version (snapshot) of the folder that would contain the unaltered document based on the date modified.


6.  Here you can open the document and save it.


How can I FTP files to MySBfiles?

You may also access MySBfiles using any SFTP or FTPS (implicit only) client. One such example of a client would be the FileZilla FTP Client, which can be freely downloaded and installed from

Configure your SFTP (or FTPS) client to point to and log on with your NetID and NetID password.

How can I manage my file storage?

Storage Quota | Virus Protection
Backup & Recovery of MySBfiles | Versioning on MySite

Each Stony Brook student, faculty, and staff member is granted up to 600MB of file storage; 500MB on MySBfiles and 100MB on SharePoint's MySite. You can use this space to store or backup your files and host a website or two. Additionally, you can access your files on any computer with Internet access.

Printer-friendly version:  Managing Your Online File Storage

Storage Quota

Any attempt to store files beyond the quota will be denied. You can determine how much space is being used on both MySBfiles and MySite. Note: 1024 bytes = 1KB; 1024KB = 1MB



  1. Open MySBfiles.
  2. Hold down the CTRL key and press " A " to select all files and folders.
  3. Hold down the CTRL key and click on "~snap shot" to deselect it.
  4. Right-click on one of your selected files and select Properties. You can see your quota in General tab > Size :


  • When you use the Connect to Server functionyou will see the space available at the bottom of the window. For more information, you can also select your directory volume and from the File menu, select Get Info. Note: This method is only available from machines on the campus network.


Log into MySite, select Site Actions , choose Site Settings , and then Storage space allocation under the Site Collection Administrations column.

Virus Protection

All files in storage are protected by anti-virus software. Attempts to copy a file infected with a virus into the directory will most likely result in a file-copy being denied, with little indication as to why the copy failed. Although, to initially prevent your files and your computer from viruses, you can download Symantec Antivirus free of charge through Stony Brooks software distribution Web site: Softweb:

Backup & Recovery of MySBfiles

Data on MySBfiles is protected in 2 ways:

  1. Snapshots taken at regular intervals
  2. Backups to tape

Snapshots are point-in-time backups that are kept on the same disks on which the original home directories are located. Snapshots are performed on a scheduled basis and files backed up during that snapshot are retained for a limited period of time. Snapshots are accessible via a hidden directory called "~snapshot". This hidden directory can be accessed from every home directory.

Snapshot Schedule
The snapshots are performed every four hours daily from the current day, nightly for the current week, and weekly for four weeks.

WeeklySunday, 12:00 AMRetention = 4 copies
NightlyMon. - Sat., 12:00 AMRetention = 6 copies
Daily1:00 AMRetention = 6 copies
Daily5:00 AMRetention = 6 copies
Daily9:00 AMRetention = 6 copies
Daily1:00 PMRetention = 6 copies
Daily5:00 PMRetention = 6 copies
Daily9:00 PMRetention = 6 copies

Backups to tape are made for disaster recovery purposes only, so if you need to recover a file, you will need to do so from oneof your snapshots.

To locate and restore a file from a snapshot:

  • From Microsoft Windows and Mac OS 10.x, search the "~snapshot" directory located in your directory for the file you wish to restore. This directory is hidden so you'll need to be sure your options are set so that you can view hidden files and directories.
  • To set your options to view hidden files on a Windows machine: Choose the Tools Menu, then Folder Options, click on the View tab and choose Show Hidden Files.
  • Within the "~snapshot" directory you'll notice several more directories, each named for the snapshot schedule under which they were created. The names of these directories don't directly correspond to the snapshot schedule under which they were run, so you'll need to search through all of these directories for the files you want to restore.

After you have performed a search for the file you wish to restore, you'll then need to look at the timestamp of the file to determine the correct version of the file you wish to restore. Once you find the file you wish to restore, just copy that file anywhere outside of the "~snapshot" directory.

On Campus, Windows users:

If you connect to MySBfiles usingthe path: \\\~NetID, you can use the Restore Previous Versions function by:

  1. Right-clicking on MySBfiles in (My) Computer.
  2. Selecting Restore Previous Versions:
    • XP users can findthe "Previous Versions" tab by selecting Properties.
  3. In the "Previous Versons" tab you will find your files backed up according to the Snaphot schedule noted above.

Versioning in SharePoint's MySite


One of the benefits of using MySite in SharePoint is the Versioning feature. You can restore a previous version of a file or just review its version history. You can invoke versioning when you create a Library as a Web Part on your MySite.

You can apply versioning to your file library when you initially create it by logging into MySBfiles, clicking on Site Actions , choosing Create , selecting the appropriate library and then choosing Yes under Document Version History .

How do I connect to MySBfiles?

You can connect to MySBfiles anytime, from any computer using your NetID and NetID password.

On a SINC Site Computer

Simply log into the domain: SUNYSB.EDU with your NetID and NetID password. On the desktop of every SINC Site machine is the MySBfiles icon. You can drag and drop files to this icon. You can also save files to the MySBfiles directory. The operating system specific directory names are:

Windows 7 

Windows XP


From Off Campus

From On Campus 

You can connect to MySBfiles from any computer connected to a campus network. This type of connection acts more like that of a local folder. 

From Windows: \\\~NetID

From Mac: smb://

From a Computer Already on the Domain 

Windows users who log in to the domain from their campus workstation will find the following when they open (My) Computer:

~NetID on '' (X:)

This is your MySBfiles. You can easily save files to this directory by choosing MySBfiles as the folder option in the Save As dialog box. Mac users who log in to the domain will see an icon to MySBfiles on their desktop.

Read-Only Access

To quickly download files to any computer, simply type the following URL into any browser:

*You can only read and download here. To upload, follow the instructions above.

Need Assistance?

Client Support

  • (631) 632-9800