Ons vra of stoorfasiliteite toesigkameras het al dan nie.

In this sentence, of means whether.

So Ons vra of ... = We ask whether ...

This of is used to introduce an indirect yes/no question:

• Het hulle kameras? = Do they have cameras?
• Ons vra of hulle kameras het. = We ask whether they have cameras.

Do not confuse this with Dutch-style meanings you may know from elsewhere; in Afrikaans, of very commonly introduces whether / if in this kind of sentence.

Al dan nie means or not.

So:

• of stoorfasiliteite toesigkameras het al dan nie means
• whether storage facilities have surveillance cameras or not

A useful way to understand it is:

• of ... het = whether ... have
• of ... het al dan nie = whether ... have or not

In many cases, Afrikaans can also just use of without al dan nie, and the meaning is still clear. Adding al dan nie makes the whether or not idea more explicit.

Because the clause after of is a subordinate clause, and in Afrikaans subordinate clauses the finite verb usually moves to the end.

Compare:

• Main clause: Stoorfasiliteite het toesigkameras.
• After of: ... of stoorfasiliteite toesigkameras het.

That is a very common Afrikaans pattern:

• Ek weet dat hy kom.
• Sy vra of hulle gereed is.
• Ons vra of stoorfasiliteite toesigkameras het.

In your sentence, al dan nie is added after het, so the full ending becomes:

• het al dan nie

Because al dan nie is a fixed expression that follows the verb in this kind of structure.

So the natural order is:

• of ... het al dan nie

not:

• of ... al dan nie het

Think of het al dan nie as the normal way to express have or not in this construction.

Yes. Afrikaans strongly prefers compound nouns written as one word.

So:

• stoor = storage
• fasiliteite = facilities
• stoorfasiliteite = storage facilities

This is very normal in Afrikaans, even where English would use two words. English learners often want to split these up, but Afrikaans usually joins them.

Other examples:

• huisdeur = house door / front door
• motorhuis = garage
• toesigkamera = surveillance camera

The plural endings help you:

• fasiliteit → fasiliteite
• kamera → kameras

So:

• stoorfasiliteite = storage facilities
• toesigkameras = surveillance cameras

Afrikaans plurals are formed in a few common ways, especially with -e or -s, but some words have spelling changes too.

Afrikaans does not use do-support the way English does.

English says:

• Do storage facilities have surveillance cameras?

Afrikaans simply uses the main verb:

• Het stoorfasiliteite toesigkameras?

And in the indirect version:

• Ons vra of stoorfasiliteite toesigkameras het.

So if you are translating from English, do not try to add a separate word for do.

Because the sentence is talking about storage facilities and surveillance cameras in a general sense, not specific ones.

So:

• stoorfasiliteite = storage facilities
• toesigkameras = surveillance cameras

This is similar to English in general statements:

• Cats like milk.
• Storage facilities have cameras.

If you wanted to make it specific, you could add an article or determiner:

• die stoorfasiliteite = the storage facilities
• die toesigkameras = the surveillance cameras
• sekere stoorfasiliteite = certain storage facilities

Yes. Here vra means ask in the sense of inquire or ask whether, so it can be followed directly by a clause introduced by of.

• Ons vra of ... = We ask whether ...

You use vir in different patterns, especially when asking a person for something or addressing a person:

• Ek vra vir hom. = I ask for him / I ask him (depending on context)
• Ek vra vir water. = I ask for water

But in your sentence, the structure is:

• vra + of-clause

So vir is not needed.

Yes. You could say:

• Ons vra of stoorfasiliteite toesigkameras het.

That already means:

• We ask whether storage facilities have surveillance cameras.

Adding al dan nie makes the or not idea explicit:

• Ons vra of stoorfasiliteite toesigkameras het al dan nie.

So the version with al dan nie is a little fuller and more emphatic, but both are natural.

The direct yes/no question would be:

• Het stoorfasiliteite toesigkameras?

Then, when it becomes an indirect question after of, the word order changes:

• of stoorfasiliteite toesigkameras het

That is a useful pattern to practice:

1. Direct question:
   • Het hulle wagtye?
2. Indirect question:
   • Ek wonder of hulle wagtye het.

So your sentence follows a very common transformation in Afrikaans.