Remote data shadowing using a multimode interface to dynamically

Details Remote data shadowing using a multimode interface to dynamically Remote data shadowing using a multimode interface to dynamically

1994-03-01

1996-11-12

Lee, Thomas C.

Boots, shoes, and leggings

39520009, 3642222, 36424294, 3642425, 364DIG1, G06F 1502

Patent

active

055749500

ABSTRACT:
A remote copy system incorporates dynamically modifiable ports on the storage controllers such that those ports can operate either as a control unit link-level facility or as a channel link-level facility. When configured as a channel link-level facility, a primary storage controller can appear as a host processor to a secondary storage controller. Using dynamic switches coupled between primary and secondary sites, fewer ESCON communication links are required since the ESCON communication links can function either as a channel or as storage controller communication link.

REFERENCES:
patent: 5058056 (1991-10-01), Hammer et al.
patent: 5089958 (1992-02-01), Horton et al.
patent: 5155845 (1992-10-01), Beal et al.
patent: 5404508 (1995-04-01), Konrad et al.
patent: 5420988 (1995-05-01), Elliott
patent: 5446871 (1995-08-01), Shomler et al.
"Escon I/U Interface" SA22-7202-01 Enterprise Systems Architecture/390.

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