HP XP Business Copy Software - Manual (Page 113)

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Figure 59 Copying Data in Two Extents that Overlap (Two T-VOLs)
Figure 60 Copying One Extent to Another in the Same Volume
Table 48 provides the calculation examples of the required resources according to the patterns of copying.
Table 48 Referential Examples for Calculating the Number of Resources Required for FlashCopy Mirror Pairs
Copy
Patterns
Required number of resources
3380-3, 3390-1,
3390-2,
3390-3,3390-3R
3390-9 3390-L 3390-M
S-VOL T-VOL Total S-VOL T-VOL Total S-VOL T-VOL Total S-VOL T-VOL Total
Copying Data
in Two Extents
that do not
Overlap (One
T-VOL)
See
Figure 55
1 1 2 3 3 6 9 9 18 17 17 34
Copying Data
in Two Extents
that do not
Overlap (Two
T-VOLs)
See
Figure 56
1 2
(1 + 1)
3 3 6
(3 + 3)
9 9 18
(9 + 9)
27 17 34
(17 + 17)
51
Copying Data
in Two Extents
that do not
Overlap (Two
S-VOLs)
See
Figure 57
2
(1 + 1)
1 3 6
(3 + 3)
3 9 18
(9 + 9)
9 27 34
(17 + 17)
17 51
Copying Data
in Three
Extents that
Overlap (One
T-VOL)
See
Figure 58
3
(1 x 3)
1 4 9
(3 x 3)
3 12 27
(9 x 3)
9 36 51
(17 x 3)
17 68