Mapped Drive Storage Size Matches my Windows Drive?

4

I have a couple of drives mapped to a SharePoint site. When I open Windows 10 Explorer and look at the details of my Windows (C:) drive, it tells be there are "4.77 GB free of 66.7 GB".

When I look at the details of any of the drives I have mapped to SharePoint, I see the exact same storage information as I do when I look at my C: drive (4.77 GB free of 66.7 GB).

Is there something funky going on, or am I just misunderstanding how mapped drives really work?

Stupid Clown

Posted 2016-01-08T15:38:23.157

Reputation: 73

I’m not that familiar with SharePoint – how exactly do you map a drive? – Daniel B – 2016-01-08T15:40:16.987

a drive mapping is a sort of shortcut, so there is nothing funky going on. You just made a shortcut of your C:\ drive to your sharepoint site. The actual size of the disk will be the same on the mapped item. – Smeerpijp – 2016-01-08T15:42:43.393

You map it as you would any other drive, except you would paste the SharePoint document library URL in the folder field. – Stupid Clown – 2016-01-08T15:44:15.400

OK. I see. So the info about the available storage has nothing to do with the mapped drives. Right? – Stupid Clown – 2016-01-08T15:53:22.117

Answers

2

It's because WebDAV ("Web Distributed Authoring and Versioning") is used to create the drive mapped to the SharePoint URL.

From Microsoft's KB2386902: WebDav mapped drive reports incorrect drive capacity:

Cause:

...WebDAV protocol doesn’t support querying server’s disk capacity. With this constrain of WebDAV protocol, Windows client sets WebDAV mapping drive’s capacity the same as its System Drive.

Resolution:

This is by design. A WebDAV mapped drive's capacity is set to match the client machine's System drive capacity. This means that the capacity you get from a WebDAV mapped drive is the same as your local System drive. System drive is where Windows is installed.

Example:

On a Windows client:

System drive C:\

Free disk space: 39.9 GB

Used Disk Space: 11.2 GB

WebDAV mapped drive Y:\

Free disk space: 39.9 GB

Used Disk Space: 11.2 GB

Ƭᴇcʜιᴇ007

Posted 2016-01-08T15:38:23.157

Reputation: 103 763

This is funny when C: drive has 3GB left, your mapped drive has 90GB left, and Windows won't let you copy a 3.1GB file to the mapped drive because there is not enough space – golimar – 2019-12-05T10:48:59.320

Asked: 2016-01-08T15:38:23.157

Viewed: 2 129 times

Active: 2016-01-08T18:44:28.553