Duplication count greater than expected

[DrParis]

Hi there,

Doing some maintenance of my folders today, I checked the duplication count of one of them.

Strangely, dpcmd told me that the actual duplication number is greater than what I configured:

D:\Applications>dpcmd get-duplication Drivers

Found 'Drivers'

  Expected number of copies: 2
  Found number of copies: 3
  Is directory: True
  Has multiple sub-duplication counts: False

  - \Device\HarddiskVolume12\PoolPart.81f030f2-2871-42ff-a4a9-3b7c96ed41f4\Applications\Drivers
  - \Device\HarddiskVolume4\PoolPart.60599e22-1e43-4c69-ae7e-4ed4c09af05e\Applications\Drivers
  - \Device\HarddiskVolume9\PoolPart.9172bfeb-6f11-448e-b90a-55627c6b31bf\Applications\Drivers

Could someone explain that? Is there a way to make DP perform some cleanup?

 

Edit: checking other folders, it gets even worst:

D:\Applications>dpcmd  get-duplication Games

Found 'Games'

  Expected number of copies: 1
  Found number of copies: 4
  Is directory: True
  Has multiple sub-duplication counts: False

  - \Device\HarddiskVolume12\PoolPart.81f030f2-2871-42ff-a4a9-3b7c96ed41f4\Applications\Games
  - \Device\HarddiskVolume1\PoolPart.e69774f6-a237-4849-b673-9349b2016df1\Applications\Games
  - \Device\HarddiskVolume4\PoolPart.60599e22-1e43-4c69-ae7e-4ed4c09af05e\Applications\Games
  - \Device\HarddiskVolume9\PoolPart.9172bfeb-6f11-448e-b90a-55627c6b31bf\Applications\Games


D:\Applications>dpcmd  get-duplication "Operating Systems"

Found 'Operating Systems'

  Expected number of copies: 1
  Found number of copies: 2
  Is directory: True
  Has multiple sub-duplication counts: False

  - \Device\HarddiskVolume12\PoolPart.81f030f2-2871-42ff-a4a9-3b7c96ed41f4\Applications\Operating Systems
  - \Device\HarddiskVolume4\PoolPart.60599e22-1e43-4c69-ae7e-4ed4c09af05e\Applications\Operating Systems


D:\Applications>dpcmd  get-duplication Tools

Found 'Tools'

  Expected number of copies: 1
  Found number of copies: 2
  Is directory: True
  Has multiple sub-duplication counts: False

  - \Device\HarddiskVolume12\PoolPart.81f030f2-2871-42ff-a4a9-3b7c96ed41f4\Applications\Tools
  - \Device\HarddiskVolume4\PoolPart.60599e22-1e43-4c69-ae7e-4ed4c09af05e\Applications\Tools

[Henrik]

It's only the directory entries that occur in many duplicates and not the files within them.

 

Example setup:

 

+Pool of 3 drives.

+Folder X has a duplication count of 2x and contains 5 files. (10 files in total across 3 drives)

 

If the folder is then balanced across the 3 drives Folder X will exist in three copies because there will be files belonging to that folder stored on all drives

(For example drive A with 3 files, Drive B with 4 files and Drive C with 3 files)

 

So getting the duplication count on folders is a bit misleading. You should look at individual files instead.

 

Hope this clears it out

[DrParis]

Hi Henrik, should have figured this out alone 

Thanks for the details

[Christopher (Drashna)]

DrParis, Don't worry, I had to look twice before I realized what was going on myself.

And there is absolutely nothing wrong with wanting to know how the software you're using works. Besides, just remember, the only stupid question is the one not asked!