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© Hitachi Data Systems Corporation 2012. All Rights Reserved.
Senior Manager Presales
Hitachi Data Systems
Realität
1.
2.
3.
4.
Sync - wait
1.
3.
4.
2.
Async – less wait
In-region
Data Center
Out of Region
Remote Data Center
JNL
Data Volumes
JNLPrimary Data Volumes
Journal data transfers
Journal read requests
1. Records are written to the primary disk. Meta data and a copy of the data placed in the journal
2. Target system issues journal reads to retrieve data that is ready to be replicated from the journal
(FIFO)
3. Primary system sends the data and metadata from the journal to the target system, including
sequence information
4. Data is committed on the target system – written to S-VOL
5. Once data is committed on the target system, the primary system is notified using the sequence
information and the journal data is released
6. If replication is interrupted and relationship suspended - replication can be restarted and continue
from the point of interruption
WRT
Hitachi
Universal
Replicator™
Asynchronous
Remote
Replication
In-region
Data Center
Primary Data Volumes
(Synchronous)
Hitachi
TrueCopy™
Synchronous
Remote
Replication
Primary Data Volumes
(Synchronous)
In-region
Recovery
Data Center
In-region
Data Center
JNLPrimary Data Volumes
(Synchronous)
Out of Region
Remote Data Center
JNL
Primary Data Volumes
(Asynchronous)JNLPrimary Data Volumes
(Synchronous)
Journal data transfers
Journal read requests
In-region
Recovery
Data Center
Hitachi
TrueCopy™
Synchronous
Remote
Replication
Hitachi
Universal
Replicator™
Asynchronous
Remote
Replication
Optional – Needed for Delta Resync
In-region
Data Center
Out of Region
Remote Data Center
JNL
Primary Data Volumes
(Asynchronous)JNLPrimary Data Volumes
(Synchronous)
Journal data transfers
Journal read requests
Out of Region
Remote Data Center
JNL
Primary Data Volumes
(Asynchronous)JNLPrimary Data Volumes
(Synchronous)
Journal data transfers
Journal read requests
In-region
Recovery
Data Center
Hitachi
TrueCopy™
Synchronous
Remote
Replication
Hitachi
Universal
Replicator™
Asynchronous
Remote
Replication
Enterprise
Technologie
zum Wohle
der
Gesellschaft
Namihei Odaira
Hitachi   snw 2012 0.4d

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Hitachi snw 2012 0.4d

  • 1. © Hitachi Data Systems Corporation 2012. All Rights Reserved. Senior Manager Presales Hitachi Data Systems
  • 3.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14. In-region Data Center Out of Region Remote Data Center JNL Data Volumes JNLPrimary Data Volumes Journal data transfers Journal read requests 1. Records are written to the primary disk. Meta data and a copy of the data placed in the journal 2. Target system issues journal reads to retrieve data that is ready to be replicated from the journal (FIFO) 3. Primary system sends the data and metadata from the journal to the target system, including sequence information 4. Data is committed on the target system – written to S-VOL 5. Once data is committed on the target system, the primary system is notified using the sequence information and the journal data is released 6. If replication is interrupted and relationship suspended - replication can be restarted and continue from the point of interruption WRT Hitachi Universal Replicator™ Asynchronous Remote Replication
  • 15.
  • 16. In-region Data Center Primary Data Volumes (Synchronous) Hitachi TrueCopy™ Synchronous Remote Replication Primary Data Volumes (Synchronous) In-region Recovery Data Center
  • 17. In-region Data Center JNLPrimary Data Volumes (Synchronous) Out of Region Remote Data Center JNL Primary Data Volumes (Asynchronous)JNLPrimary Data Volumes (Synchronous) Journal data transfers Journal read requests In-region Recovery Data Center Hitachi TrueCopy™ Synchronous Remote Replication Hitachi Universal Replicator™ Asynchronous Remote Replication Optional – Needed for Delta Resync
  • 18. In-region Data Center Out of Region Remote Data Center JNL Primary Data Volumes (Asynchronous)JNLPrimary Data Volumes (Synchronous) Journal data transfers Journal read requests Out of Region Remote Data Center JNL Primary Data Volumes (Asynchronous)JNLPrimary Data Volumes (Synchronous) Journal data transfers Journal read requests In-region Recovery Data Center Hitachi TrueCopy™ Synchronous Remote Replication Hitachi Universal Replicator™ Asynchronous Remote Replication
  • 19.
  • 20.
  • 21.
  • 23.
  • 24.