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EAV (Extended Address Volume)

This concept can be thought of as like treating all or a subset of the disk and SSD drives installed on your PC as one disk.

  • This is a mechanism for creating a logical disk volume made up of multiple physical disk volumes.

EBCDIC (Extended Binary Coded Decimal Interchange Code)

EBCDIC is analogous to ASCII and UTF-8.

  • This is the encoding scheme that data is often encoded in on z/OS. This is a precursor to the ASCII standard.

ESDS (Entry Sequence Data Set)

  • A VSAM data set that is organized sequentially, which means that each record must be accessed one at a time starting with the first record.

ESM (External Security Manager)

  • These are the security products that maintain the security policies for the system (RACF/ACF2/TOP SECRET).