If it takes a very short time to recover even for an enormous amount data, you then verify if the checksums can match the original data.

即便恢复大量数据所需的时间很短，也要验证校验和能否与原始数据匹配。

youdao

You can work out default expectations by looking at the spreads on speculative bonds and making an assumption about the amount investors will recover from companies that fail to pay up in full.

ECONOMIST: Buttonwood