deetayouryou ga ookii.

big

Breakdown of deetayouryou ga ookii.

• が: subject particle
• データ容量ようりょう: a data allowance

Questions & Answers about deetayouryou ga ookii.

Why is が used here instead of は?

が marks データ容量 as the grammatical subject of 大きい.

So the structure is basically:

• データ容量 = data capacity / storage size
• が = subject marker
• 大きい = is large

This is a very normal pattern in Japanese:
[noun] が [i-adjective]

For example:

• 音が大きい。 = The sound is loud.
• 部屋が広い。 = The room is spacious.
• データ容量が大きい。 = The data capacity / data size is large.

If you used は instead, the nuance would shift more toward topic or contrast:

• データ容量は大きい。

This can sound like:

• “As for the data capacity, it’s large.”
• “The data capacity is large, though maybe something else is not.”

So が is the more neutral choice if you are simply stating that the data capacity is large.

What exactly does データ容量 mean?