HP XP P9500 Storage User Manual
Page 38
Table 22 Reference examples for calculating the number of resources required to create the Compatible
FlashCopy relationships
Copy patterns
Emulation type
Copying one
extent to
Copying data in
two extents that
Copying data
in three extents
Copying data in
two extents that
Copying data in
two extents that
Copying
data in two
another in
overlap (Two
T-VOLs)
that overlap
(One T-VOL)
do not overlap
(Two S-VOLs)
do not overlap
(Two T-VOLs)
extents that
do not
the same
volume
overlap
(One T-VOL)
6*5
(3 x 2) = 6
(3 x 3) = 9
(3 + 3) = 6
3) =
3
S-VOL
3380-3 or
3390-3
N/A
(3 +3) = 6
3
3
(3 + 3) = 6
3
T-VOL
3390-3
6
12
12
9
9
6
Total
*1
2 *5
(1 x 2) = 2
(1 x 3) = 3
(1 + 1) = 2
1
1
S-VOL
3390-1
N/A
(1 + 1) = 2
1
1
(1 + 1) = 2
1
T-VOL
2
4
4
3
3
2
Total
4 *5
(2 x 2) = 4
(2 x 3) = 6
(2 + 2) = 4
2
2
S-VOL
3390-2
N/A
(2 + 2) = 4
2
2
(2 + 2) = 4
2
T-VOL
4
8
8
6
6
4
Total
16 *5
(8 x 2) = 16
(8 x 3) = 24
(8 + 8) = 16
8
8
S-VOL
3390-9 *2
N/A
(8 + 8) = 16
8
8
(8 + 8) = 16
8
T-VOL
16
32
32
24
24
16
Total
50 *5
(25 x 2) = 50
(25 x 3) = 75
(25+25) = 50
25
25
S-VOL
3390-L
*3
N/A
(25+25) = 50
25
25
(25+25) = 50
25
T-VOL
50
100
100
75
75
50
Total
98 *5
(49 x 2) = 98
(49 x3) = 147
(49+49) = 98
49
49
S-VOL
3390-M *4
N/A
(49+49) = 98
49
49
(49+49) = 98
49
T-VOL
98
196
196
147
147
98
Total
130
5
(65 X 2 = 130)
(65 X 3 = 195)
(65 + 65 =
130)
65
65
S-VOL
3390-A
(maximum
size:
N/A
(65 + 65 =
130)
65
65
(65 + 65 =
130)
65
T-VOL
223.2GB, the
number of user
cylinder:
262,668)
6
130
260
260
195
195
130
Total
*1 The maximum number of resources that can be used as S-VOL is 48. You cannot establish any relationship if 48 resources
are already used in the S-VOL, and if the copy data range of relationships that are already established overlap with all the
resources.
*2 The maximum number of resources that can be used as S-VOL is 128.
*3 The maximum number of resources that can be used as S-VOL is 400.
*4 The maximum number of resources that can be used as S-VOL is 784.
*5 Half is for the copy source extent, and the other half is for the copy target extent.
*6 The maximum number of resources that can be used as S-VOL is 1,040.
The number of pairs that can be created is determined according to the following condition:
The maximum number of relations that can be established is the largest number that meets the
equations, Σ(α) ≤ (β) and Σ(γ) ≤ 1,048,575, where:
38
Preparing for Compatible FlashCopy operations