|
Table 1. VSAM Usage of 3390 DASD SpaceCI Size |
Block
Size |
Physical
Block/
Track
|
CI/CA |
% Track Used |
|
Bytes/Track |
---|
Data |
Index |
Data |
Index |
Data |
Index |
Data |
Index |
---|
512 |
512 |
512 |
49 |
49 |
735 |
44.28 |
43 |
25,088 |
25,088 |
1,024 |
1,024 |
1,024 |
33 |
33 |
495 |
59.64 |
58 |
33,792 |
33,792 |
1,536 |
1,536 |
1,536 |
26 |
26 |
390 |
70.48 |
69 |
39,936 |
39,936 |
2,048 |
2,048 |
2,048 |
21 |
21 |
315 |
75.90 |
74 |
43,008 |
43,008 |
2,560 |
2,560 |
2,560 |
17 |
17 |
255 |
76.80 |
75 |
43,520 |
43,520 |
3,072 |
3,072 |
3,072 |
15 |
15 |
225 |
81.32 |
79 |
46,080 |
46,080 |
3,584 |
3,584 |
3,584 |
13 |
13 |
195 |
82.22 |
80 |
46,592 |
46,592 |
4,096 |
4,096 |
4,096 |
12 |
12 |
180 |
86.74 |
85 |
49,152 |
49,152 |
4,608 |
4,608 |
4,608 |
10 |
10 |
150 |
81.32 |
79 |
46,080 |
46,080 |
5,120 |
5,120 |
5,120 |
9 |
9 |
135 |
81.32 |
79 |
46,080 |
46,080 |
5,632 |
5,632 |
5,632 |
9 |
9 |
135 |
89.45 |
87 |
50,688 |
50,688 |
6,144 |
6,144 |
6,144 |
8 |
8 |
120 |
86.74 |
85 |
49,152 |
49,152 |
6,656 |
6,656 |
6,656 |
7 |
7 |
105 |
82.22 |
80 |
46,592 |
46,592 |
7,168 |
7,168 |
7,168 |
7 |
7 |
105 |
89.50 |
86 |
50,176 |
50,176 |
7,680 |
7,680 |
7,680 |
6 |
6 |
90 |
81.32 |
79 |
46,080 |
46,080 |
8,192 |
8,192 |
8,192 |
6 |
6 |
90 |
86.74 |
85 |
49,152 |
49,152 |
10,240 |
10,240 |
10,240 |
5 |
5 |
75 |
90.36 |
88 |
51,200 |
51,200 |
12,288 |
12,288 |
12,288 |
4 |
4 |
60 |
86.74 |
85 |
49,152 |
49,152 |
14,336 |
7,168 |
14,336 |
7 |
3 |
52 |
89.50 |
74 |
50,176 |
43,008 |
16,384 |
16,384 |
16,384 |
3 |
3 |
45 |
86.74 |
85 |
49,152 |
49,152 |
18,432 |
18,432 |
18,432 |
3 |
3 |
45 |
97.59 |
95 |
55,296 |
55,296 |
20,480 |
10,240 |
20,480 |
5 |
2 |
37 |
90.36 |
70 |
51,200 |
40,960 |
22,528 |
5,632 |
22,528 |
9 |
2 |
33 |
89.45 |
77 |
50,688 |
45,056 |
24,576 |
24,576 |
24,576 |
2 |
2 |
30 |
86.74 |
85 |
49,152 |
49,152 |
26,624 |
26,624 |
26,624 |
2 |
2 |
30 |
93.97 |
92 |
53,248 |
53,248 |
28,672 |
7,168 |
28,672 |
7 |
1 |
26 |
89.50 |
49 |
50,176 |
28,672 |
30,720 |
10,240 |
30,720 |
5 |
1 |
25 |
90.36 |
53 |
51,200 |
30,720 |
32,768 |
16,384 |
32,768 |
3 |
1 |
22 |
86.74 |
56 |
49,152 |
32,768 |
Note:
For extended-format VSAM data sets, each block has
a 32-byte suffix which is added by the system. You will need to take
this into account when you calculate disk space requirements. For
more information, see the information about extended-format
VSAM data sets in z/OS DFSMS Using Data Sets.
|