VSAM usage of 3390 DASD space

Table 1. VSAM Usage of 3390 DASD Space
CI Size	Block Size			Physical Block/ Track	CI/CA	% Track Used		Bytes/Track
CI Size	Data	Index	Data	Index	CI/CA	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.