Solution: Convert $2 \frac{1}{2}$ to an improper fraction: $\frac{5}{2}$. Subtract $\frac{3}{4}$: $\frac{5}{2} - \frac{3}{4} = \frac{10}{4} - \frac{3}{4} = \frac{7}{4}$. The remaining storage is $\frac{7}{4}$ terabytes, which is $\boxed{\dfrac{7}{4}}$ of the total.

Sun, 19 Apr 2026 15:02:50 +0000

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