DB2 places its data starting at the 512 byte offset (1024 on HP-UX) so this is where you should start copying from in the old location, and where you should start writing to in the new location.

DB 2将数据写在512字节(HP - UX上是1024)的偏移位置上，这就是开始复制或者写入数据的位置。

youdao

The chip, developed by the Memory Spot research team at HP, is 2-4mm square and current versions can hold up to 512 kilobytes of data.

BBC: NEWS | Technology | Tiny wireless memory chip debuts