Browse Prior Art Database

GDPS/PPRC Split Freeze policy

IP.com Disclosure Number: IPCOM000202381D
Publication Date: 2010-Dec-14
Document File: 6 page(s) / 374K

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention allows a different action to be taken subsequent to a FREEZE for a primary disk failure as opposed to a secondary disk failure. The GDPS/PPRC FREEZE policy is divided into two separate keywords - PPRCFAILURE for secondary disk failure and PRIMARYFAILURE for primary disk failure. This allows customers that do not have the cross-site infrastructure requirements or cannot tolerate the performance impact to implement GDPS/PPRC HyperSwap to have an effective FREEZE policy of GO for a secondary disk failure and STOP for a primary disk failure.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 25% of the total text.

Page 01 of 6

GDPS/PPRC Split Freeze policy

There are multiple GDPS products under the GDPS solution umbrella (refer to the below What are customers doing today ? figure). These include:

o GDPS/PPRC HyperSwap Manager (HM) - this provides single site disk storage continuous

availability and this provides an entry level continuous availability / disaster recovery solution between two separated by up to 200 fiber KM. This provides a RPO of zero (based upon policy) and RTO of a couple hours since recovery procedures must be executed manually.

o GDPS/PPRC - this provides a continuous availability / disaster recovery solution between two

sites separated by up to 200 fiber KM. Two configurations are supported: active/active and active/standby. This provides a RPO of zero (based upon policy) and RTO of zero; however, the workload in the failed site must be restarted to release shared resources (e.g., DBMS retained locks in a data sharing environment).

o GDPS/XRC - this provides an unlimited distance disaster recovery solution for system z servers

and data. This provides a RPO of a few seconds and RTO of an hour or less.

o GDPS/GM - this provides an unlimited distance disaster recovery solution for system z and

distributed servers and data. This provides a RPO of a few seconds and RTO of an hour or less

o GDPS/MzGM (combination of GDPS/PPRC and GDPS/XRC) - this provides a continuous

availability / disaster recovery solution between two sites separated by up to 200 fiber KM and an unlimited distance disaster recovery solution for system z servers and data. This will achieve the GDPS/PPRC and GDPS/XRC RPOs and RTOs described above.

o GDPS/MGM (MzGM (combination of GDPS/PPRC and GDPS/GM) - this provides a continuous

availability / disaster recovery solution between two sites separated by up to 200 fiber KM and an unlimited distance disaster recovery solution for system z and distributed servers and data. This will achieve the GDPS/PPRC and GDPS/XRC RPOs and RTOs described above.

1


Page 02 of 6

(This page contains 00 pictures or other non-text object)

(This page contains 22 pictures or other non-text object)

(This page contains 23 pictures or other non-text object)

What are customers doing today ?

Continuous Availability of

Data within a Data Center

Continuous Availability / Disaster Recovery within a Metropolitan Region

Disaster Recovery at

Extended Distance

Continuous Availability Regionally and Disaster

Recovery Extended Distance

  Two Data Centers Rapid Systems Disaster Recovery with "seconds"of

     Data Loss Disaster recovery for out of region interruptions

  Single Data Center Applications remain active

(This page contains 03 pictures or other non-text object)

(This page contains 01 pictures or other non-text object)

(This page contains 04 pictures or other non-text object)

(This page contains 02 pictures or other non-text object)

(This page contains 05 pictures or other non-text object)

GDPS/HyperSwap Mgr RPO=0 & RTO=0

 Two Data Centers Systems remain active

Contin...