SharePoint folders with custom metadata

you need to create new Content Type using Folder content type. you can add custom site columns and appy to the document library or image library.
Please find the below steps

1. Go to Site Actions, Site Settings 
2. Click Site Content Types 
3. Click Create
4. Give the new content type a name such as "HLD" or "Develop"
5. Set the parent content type group as Folder Content Types
6. Set the parent content type to Folder
7. Add the new content type to a Group and put it back in the "Folder Content Types" group
8. Click OK
9. Scroll down to the columns section and click Add from new site column
10. Name the column and set all the usual column options
11. Repeat for any additional columns (Release Date, etc)
12. Click OK
13. Go to your document library
14. Click Settings and Library Settings, or in 2010 click the Library ribbon tab and then click Library Settings
15. Click Advanced and set Allow management of content types to Yes and click OK (this may already selected)
16. Scroll down to Content Types and click Add from existing site content types and add your new folder content type
17. Go to your document library and click the New dropdown, or the New button in the 2013 Document ribbon, and add your new folder also
18. Go to the View dropdown and click Modify this view and add your new folder meta data columns.

SharePoint 2013 Environment Optimization (Dev Box)

• Set the search service performance to REDUCED
• Set the AppFabric cache to a maximum of 300MB
• Set the search NodeRunner.exe to a maximum of 50MB
• Set all user databases to SIMPLE recovery mode
• Set SQL maximum server memory to 2.5GB