Figure 47 Multi-Copy (Including Snapopc+) - Fujitsu ETERNUS DX60 S4 Design Manual

1. Function
Backup (Advanced Copy)
For a SnapOPC+, the maximum number of SnapOPC+ copy session generations can be set for a single copy
source area when seven or less multi-copy sessions are already set.

Figure 47 Multi-Copy (Including SnapOPC+)

Copy
destination 7
Copy
destination 6
Copy
destination 5
Copy destination (SnapOPC+ generation data)
●
Cascade Copy
A copy destination with a copy session that is set can be used as the copy source of another copy session.
A Cascade Copy is performed by combining two copy sessions.
In Figure 48, "Copy session 1" refers to a copy session in which the copy destination area is also used as the copy
source area of another copy session and "Copy session 2" refers to a copy session in which the copy source area is
also used as the copy destination area of another copy session.
For a Cascade Copy, the copy destination area for copy session 1 and the copy source area for copy session 2
must be identical or the entire copy source area for copy session 2 must be included in the copy destination area
for copy session 1.
FUJITSU Storage ETERNUS DX60 S4, ETERNUS DX60 S3 Hybrid Storage Systems Design Guide (Basic)
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Copy
destination 1
Copy
destination 2
Copy
Copy source
destination 3
Copy
destination 4
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