Improve naming of persistent data storage accounts

[dsj976]

:white_check_mark: Checklist

• [x] I have searched open and closed issues for duplicates.
• [x] This is a request for a new feature in the Data Safe Haven or an upgrade to an existing feature.
• [x] The feature is still missing in the latest version.
• [x] I have read through the documentation.
• [x] This isn't an open-ended question (open a discussion if it is).

:strawberry: Suggested change

The naming convention of persistent data storage accounts (which follows the pattern <SHM ID><SRE ID>data<random letters>), is not very user friendly and can make it easy to confuse storage accounts for SREs with similar IDs. Can the naming convention be improved to make it easier to read?

For example, could the storage account name start with the SRE ID, i.e. could it follow the pattern <SRE ID><SHM ID>data<random letters>?

[dsj976]

Tagging @cptanalatriste and @helendduncan for more ideas

[JimMadge]

Do you only have a problem with the names in v4.*?

They do not follow the same format in >v5

[jemrobinson]

They're also bad in v5 though. For example: SHM blue, SRE ultramarine -> shblusreultsensitivedata

[JimMadge]

We are also working with a fair few restrictions on what is a valid storage account name.

I think it is only alphanumeric, no spaces, no hyphens or underscores (?) and globally unique.