Prevent Time Machine from changing device icon...

When I use Time Machine on a disk, it changes the icon. In my particular circumstance, I don't want to do this as the attached device is a Drobo containing lots of other stuff, and I'd rather keep the default icon (a nice picture of the Drobo itself).
How do I do this?

Thomas A Reed wrote:
You should not be mixing Time Machine backups and other data on the same volume. TM will fill the volume, which will make it difficult to work with other files on that volume.
As I understand it, Time Machine only performs differential backups, so unless I'm regularly creating and destroying large amounts of data, it probably won't use much disk space at all?
If you wish to do this, you should partition the Drobo into two volumes, one for the TM backups and one for the other stuff.
An annoying feature of Drobo (that I discovered after purchasing) is that their website both recommends and discourages this! The Drobo software only works properly if you create one volume using Drobo dashboard. If you partition the disk, Drobo then only sees (and reports on) the first partition. Adding more disks to (or upgrading disk capacity in) the Drobo only increases the size of the second partition, so you have to make the first one your fixed-size Time Machine partition. When I tried this, it seemed to affect the blue lights on the front of the Drobo, which also only reported on the Time Machine partition - the very partition I don't care about as Time machine manages itself!
Of course, if you do that, be aware that backing up data from one partition onto the TM backup on another partition is no good... it would all still be on the same drive, and thus all gone when the drive fails.
This is only true of a single external disk. In a RAID (or RAID-like) system, when a single drive fails, your data is preserved while you source a replacement disk.
Anyway, all of this is a distraction from my original post, which remains unanswered.

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    Shadow99999 wrote:
    Hi,
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