Chapter 8 Advanced Copy Management
8.2 Functions in the Action Area for Advanced Copy
ETERNUS Web GUI User’s Guide
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Copyright 2011 FUJITSU LIMITED
P2X0-1090-02ENZ0
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The table size for OPC/QuickOPC/SnapOPC/ with OPC Restoration (S2)
M
*1:
For EC, OPC, QuickOPC, SnapOPC, and REC copy sources, the copy capacity is the total
capacity of all volumes (slices or partitions) in the ETERNUS DX Disk storage system that are
defined as copy sources. For REC copy destinations, the copy capacity is the total capacity of all
the volumes (slices or partitions) in the ETERNUS DX Disk storage system that are defined as
copy destinations.
If the ETERNUS DX Disk storage system is used for both the " EC, OPC, QuickOPC, SnapOPC or
REC copy source" and the " REC copy source", the copy capacity is the total capacity of both.
For multi-copy sessions, the copy capacity is the total capacity of multi-copy source volumes
(slices or partitions), multiplied by the number of multi-copy destinations for each copy source.
Example:
Copy area in the copy source logical volume A: 200M, Number of multi-copy destinations: 4
Copy area in the copy source logical volume B: 500MB, Number of multi-copy destinations: 8
Add 200
×
4 + 500
×
8 = 4800MB to the copy capacity (C1).
The number of sessions (N1) for multi-copy is 4 + 8 = 12.
When executing OPC Restoration from a copy destination with multi-copy and multi-
generation enabled, select one copy destination and apply the above formula. Other copy
destinations are calculated as being normal multi-copy and multi-generation.
8.2.7
Modify Copy Parameters
This function sets the parameters to enable automatic reporting when the SDP capacity is
insufficient during a session and specifies the unit of the area allocation to the SDV
(SDPE). If the copy source data exceeds the physical capacity of copy destination (and when the
free SDP does not exist), an error occurs in the relevant copy session and other older copy
sessions. This function prevents stopping copy session when the capacity shortage occurs.
There are three methods for notification; E-mail, SNMP Trap, and syslog. The ETERNUS DX
Disk storage system reports the notification using the method specified in
. When reporting, select the notification method in advance.
M:
Resolution (The same value is used in the ETERNUS DX Disk storage system. Set
"
×
1" if possible.)
C2:
The total copy capacity (GB) for OPC/QuickOPC/SnapOPC/ with OPC
Restoration in the volume (*1)
N2:
The number of sessions for OPC/QuickOPC/SnapOPC/ with OPC
Restoration
S2 [MB] = ((2
×
C2 / M) + N2)
×
2
×
8 [KB] / 1024 (Round up decimal point)
B
A
