Single Large Expensive Disk

SLED: Drive module of an IBM 3380

Single Large Expensive Disk (ger .: single large expensive disk ) is a term for the 90 of the mid-1950s to the z. B. with mainframe computers usual data storage solutions, from individual, from today's perspective comparatively large-format and expensive hard drives. This contrasts with the RAID concept that emerged at the end of the 80s , in which several inexpensive, small-format disks work together in a flexible and redundancy-secured network.

Individual evidence

↑ David A. Patterson, Garth Gibson, and Randy H. Katz: A Case for Redundant Arrays of Inexpensive Disks (RAID). (PDF; 1.2 MB) University of California, Berkeley , 1988, accessed on February 8, 2011 : "While the capacity of Single Large Expensive Disks (SLED) has grown rapidly, the performance improvement of SLED has been modest."
↑ 20th century disk storage chronology. IBM , accessed February 8, 2011 .

[patterson-1] David A. Patterson, Garth Gibson, and Randy H. Katz: A Case for Redundant Arrays of Inexpensive Disks (RAID). (PDF; 1.2 MB) University of California, Berkeley , 1988, accessed on February 8, 2011 : "While the capacity of Single Large Expensive Disks (SLED) has grown rapidly, the performance improvement of SLED has been modest."

[2] 20th century disk storage chronology. IBM , accessed February 8, 2011 .