Browse Prior Art Database

Placement of Paging Mini-disk On Real Disk

IP.com Disclosure Number: IPCOM000059815D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Miro, F: AUTHOR

Abstract

A method to minimize disk seek time between paging mini-disk and other mini-disks on the same real disk is described. A real disk storage drive can logically be directed into a group of mini- disks and the system arranged to provide paging of data between mini-disk and memory.

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Placement of Paging Mini-disk On Real Disk

A method to minimize disk seek time between paging mini-disk and other mini-disks on the same real disk is described. A real disk storage drive can logically be directed into a group of mini- disks and the system arranged to provide paging of data between mini-disk and memory.

The paging mini-disk can be the most frequently accessed area on the disk and therefore the most performance sensitive. Locating the paging mini-disk on the center of the real disk minimizes the average distance the disk-arm must travel between paging and database (non-paging) accesses. Non-paging mini- disks are allocated adjacent to the paging mini-disk. Standard procedure on a paging system is to dedicate an entire disk(s) paging (for performance), but on systems with a very limited number of disks (1 or 2) this is not practical. Enforcing a central placement policy for the paging mini-disk minimizes penalty to paging performance while maintaining the benefit of database storage capacity.

Disclosed anonymously.

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