Jump to content

Linear data set

From Wikipedia, the free encyclopedia
This is an old revision of this page, as edited by AnomieBOT (talk | contribs) at 05:38, 7 April 2021 (Dating maintenance tags: {{Fact}}). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

A linear data set (LDS) is a type of data set organization used by IBM's VSAM computer data storage system.[1]: 5 

The LDS has a control interval size of 4096 bytes to 32768 bytes[citation needed] in increments of 4096.[1]: 31  A LDS does not have embedded control information, because it does not contain control information, the LDS cannot be accessed as if it contained individual records.[2]

This data set allows for physical addressing, which allows it to be used by systems such as that Operating systems. The benefit of this is that systems such as the OS can access multiple disk spindles and view it as a single storage implementation. The limitations of this, though, is that this does not make this particularly useful to higher level abstraction levels.

See also

References

  1. ^ a b Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (March 2013). "Chapter 1. VSAM basics". VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
  2. ^ "IBM Knowledge Center". www.ibm.com. Retrieved 2021-02-07.