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Chapter 6 Settings Menu
> 6.3 Advanced Copy Settings
ETERNUS DX400/DX8000 series ETERNUSmgr User Guide Settings/Maintenance
470
Copyright 2010 FUJITSU LIMITED
P2X0-0760-02ENZ0
■ How to calculate the Advanced Copy Table Size
The size of Advanced Copy table and resolution are decided by the amount of copy data and the
number of simultaneous active sessions (number of volumes).
● Open Volume EC/REC and Open Volume OPC/SnapOPC not for OPC Restoration cases
(S1)
M:Resolution
(The same value as used in the device. Set to "1" if possible.)
C1:Copy capacity for EC/REC and OPC/SnapOPC on Open Volumes (*1) [GB]
(where OPC/SnapOPC is not used for OPC Restoration)
N1:Number of sessions for EC/REC and OPC/SnapOPC on Open Volumes
(where OPC/SnapOPC is not used for OPC Restoration)
S1 [MB] = ((2 × C1 /M) + N1) × 8 [KB] / 1024 (Round up decimal point)
● Open Volume OPC/SnapOPC for OPC Restoration case (S2)
M:Resolution
(The same value as used in the device. Set to "1" if possible.)
C2:Copy capacity for OPC/SnapOPC on Open Volumes (*1) [GB]
(where OPC/SnapOPC is used for OPC Restoration)
N2:Number of sessions for OPC/SnapOPC on Open Volumes
(where OPC/SnapOPC is used for OPC Restoration)
S2 [MB] = ((2 × C2 /M) + N2) × 2 × 8 [KB] / 1024 (Round up decimal point)
Advanced Copy table size (S) [MB] =
Open Volume EC/REC and Open Volume OPC/SnapOPC table size not for OPC Restoration
(S1) [MB]
+ Open Volume OPC/SnapOPC table size for OPC Restoration (S2) [MB]
+ Open Volume QuickOPC table size not for OPC Restoration (S3) [MB]
+ Open Volume QuickOPC table size for OPC Restoration (S4) [MB]
+ Open Volume SnapOPC+ table size (S5) [MB]
+ Mainframe Volume EC/OPC/REC table size (S6) [MB]
• The required Advanced Copy table size setting is derived by rounding
the value (S) obtained using the above equation up to the next multiple
of eight.
• The above Advanced Copy table size formula should be applied to each
CM.
• If the derived Advanced Copy table size value (S) exceeds the
maximum allowed, use the Resolution (M) that produces the largest
allowed Advanced Copy table size. Set the resol u t i o n ( M ) a s s m a l l a s
possible.
• The maximum allowed Advanced Copy table sizes are as follows.
- ETERNUS DX410/DX440:136MB
- ETERNUS DX8100:136MB
- ETERNUS DX8400/DX8700:528MB
• It is recommended to make allowance for possible future increases in
the copy capacity when calculating the table size.