Available Advanced Copy Combinations; Figure 6.5 Restore Opc - Fujitsu ETERNUS DX80 S2 Overview
Disk storage system
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Also See for ETERNUS DX80 S2:
- Cli user's manual (756 pages) ,
- User manual (186 pages) ,
- User's manual & installation instructions (147 pages)
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Chapter 6 Optional Functions
6.2 Backup (Advanced Copy)
•
When REC is performed over a WAN, a bandwidth of at least 50Mbit/s is required if data is not compressed
on the line. When data is compressed, a 50Mbit/s or less bandwidth is sufficient.
•
When REC is performed over a WAN, the round-trip time of data transmission must be 50ms or less for the
synchronous transmission mode and 100ms or less for the asynchronous transmission mode. A setup in
which the round-trip time is 10ms or less is recommended for the synchronous transmission mode.
•
When a concurrent firmware update is performed, copy sessions must be suspended.
•
When the REC Consistency mode is used between different storage system models, an equal or larger
number of controllers than the copy source storage system is recommended for the copy destination
storage system.
•
When the number of controllers in the copy source storage system is eight (*1) and the number of
controllers in the copy destination storage system is two or less, the REC Consistency mode cannot be
used.
•
The ETERNUS DX90 S2, the ETERNUS DX410 S2/DX440 S2, the ETERNUS DX410/DX440, the ETERNUS
DX8100 S2/DX8700 S2, and the ETERNUS DX8100/DX8400/DX8700 support REC disk buffers.
•
When an older ETERNUS Disk storage system is used as the copy destination, REC cannot be performed
between encrypted volumes and unencrypted volumes.
*1:
The maximum number of controllers that can be installed in the ETERNUS DX8700/DX8700 S2 and the
ETERNUS8000 models 2100 and 2200
6.2.3
Available Advanced Copy Combinations
Different Advanced Copy types can be combined and used together.
●
Restore OPC
For OPC, QuickOPC, SnapOPC, and SnapOPC+, restoration of the copy source from the copy destination is
complete immediately upon request.
Figure 6.5 Restore OPC
OPC, QuickOPC,
SnapOPC, or SnapOPC+
Copy source
Restoration from the copy destination
to the copy source (Restore OPC)
Copy destination
85
ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED
P3AM-4812-11ENZ0
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