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Disk Drive Geometry Information

There will soon be a detailed protocol for installing drives on SUN computers. For now, use the physical cylinder numbers found below, as input to format. For Data Cylinders, feed a value 2 cylinders smaller. Add 2 Alternate Cylinders (really the 2 cylinders used for the Label) and agree to a value for Physical Cylinders that matches the value found below.

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o ST11200(N,ND,W,WD)

Values Read from Drive:
2059139 blocks = 1856 partial cylinders * 15 heads * 74 sectors
An arbitrary SUN geometry:
2059050 blocks = 1853+2 cylinders * 15 heads * 74 sectors
An arbitrary HP geometry:
1029525 (1K) blocks = 1855 cylinders * 15 heads * 37 (1K) sectors

o ST12400(N,ND,W,WD)

Values Read from Drive:
4194684 blocks = 2660 partial cylinders * 19 heads * 83 sectors
An arbitrary SUN geometry:
4194288 blocks = 2626+2 cylinders * 19 heads * 84 sectors
An arbitrary HP geometry:
2097144 (1K) blocks = 2628 cylinders * 19 heads * 42 (1K) sectors

o ST12550(N,ND,W,WD)

Values Read from Drive:
4178873 blocks = 2750 partial cylinders * 19 heads * 80 sectors
An simple arbitrary SUN geometry:
4178480 blocks = 2747+2 cylinders * 19 heads * 80 sectors
A better arbitrary SUN geometry:
4178556 blocks = 2680+2 cylinders * 19 heads * 82 sectors
An arbitrary HP geometry:
2089278 (1K) blocks = 2682 cylinders * 19 heads * 41 (1K) sectors

o ST15150(N,ND,W,WD)

Values Read from Drive:
8388314 blocks = 3734 partial cylinders * 21 heads * 107 sectors
An arbitrary SUN geometry:
8388051 blocks = 3731+2 cylinders * 21 heads * 107 sectors

o ST15230(N,ND,W,WD)

Values Read from Drive:
8386732 blocks = 4013 partial cylinders * 19 heads * 110 sectors
An arbitrary SUN geometry:
8385080 blocks = 4010+2 cylinders * 19 heads * 110 sectors
An arbitrary HP geometry:
4192540 (1K) blocks = 4012 cylinders * 19 heads * 55 (1K) sectors

o ST19171(N,ND,W,WD,WC,FC)

Values Read from Drive:
17783111 blocks = 5325 partial cylinders * 20 heads * 167 sectors
An arbitrary SUN geometry:
17782160 blocks = 5322+2 cylinders * 20 heads * 167 sectors
An arbitrary HP geometry:
8890960 (1K) blocks = 5356 cylinders * 20 heads * 83 (1K) sectors

Note: HP/UX versions earlier than 10, support ONE 4GB (or even 2GB) file system. Refer to our HP vendor information for patches.

o ST31051(N,W,WC)

Values Read from Drive:
2069859 blocks = 4140 partial cylinders * 4 heads * 125 sectors
An arbitrary SUN geometry:
2068500 blocks = 4137+2 cylinders * 4 heads * 125 sectors
An arbitrary HP geometry:
1034800 (1K) blocks = 3980 cylinders * 5 heads * 52 (1K) sectors

o ST31200(N,ND,W,WD)

Values Read from Drive:
2061107 blocks = 2727 partial cylinders * 9 heads * 84 sectors
An arbitrary SUN geometry:
2060856 blocks = 2724+2 cylinders * 9 heads * 84 sectors
An arbitrary HP geometry:
1030428 (1K) blocks = 2726 cylinders * 9 heads * 42 (1K) sectors
ST32151

o ST31230 or ST31231(N,ND,W,WD)

Values Read from Drive:
2069859 blocks = 4020 partial cylinders * 5 heads * 103 sectors
An arbitrary SUN geometry:
2069785 blocks = 4017+2 cylinders * 5 heads * 103 sectors
An arbitrary HP geometry:
1034800 (1K) blocks = 3980 cylinders * 5 heads * 52 (1K) sectors

o ST32151 or ST32155(N,W,WC)

Values Read from Drive:
4197404 blocks = 4198 partial cylinders * 8 heads * 125 sectors
An arbitrary SUN geometry:
4197000 blocks = 4195+2 cylinders * 8 heads * 125 sectors
An arbitrary HP geometry:
2098656 (1K) blocks = 4164 cylinders * 8 heads * 63 (1K) sectors

o ST32171(N,ND,W,WD,WC,FC)

Values Read from Drive:
4222639 blocks = 5150 partial cylinders * 5 heads * 164 sectors
An arbitrary SUN geometry:
4222180 blocks = 5147+2 cylinders * 5 heads * 164 sectors
An arbitrary HP geometry:
2111090 (1K) blocks = 5149 cylinders * 5 heads * 82 (1K) sectors

o ST32430(N,ND,W,WD)

Values Read from Drive:
4197404 blocks = 4021 partial cylinders * 9 heads * 116 sectors
An arbitrary SUN geometry:
4196880 blocks = 4018+2 cylinders * 9 heads * 116 sectors
An arbitrary HP geometry:
2098440 (1K) blocks = 4020 cylinders * 9 heads * 58 (1K) sectors

o ST32550(N,ND,W,WD)

Values Read from Drive:
4194057 blocks = 3531 partial cylinders * 11 heads * 108 sectors
An arbitrary SUN geometry:
4193640 blocks = 3528+2 cylinders * 11 heads * 108 sectors
An arbitrary HP geometry:
2096820 (1K) blocks = 3530 cylinders * 11 heads * 54 (1K) sectors

o ST34371(N,ND,W,WD,WC,FC)

Values Read from Drive:
8496959 blocks = 5182 partial cylinders * 10 heads * 164 sectors
An arbitrary SUN geometry:
8496840 blocks = 5179+2 cylinders * 10 heads * 164 sectors
An arbitrary HP geometry:
4248420 (1K) blocks = 5181 cylinders * 10 heads * 82 (1K) sectors

o ST34572(N,ND,W,WD,WC,FC)

An arbitrary SUN geometry:
8888704 blocks = 6311+2 cylinders * 8 heads * 176 sectors
An arbitrary HP geometry:
4443648 (1K) blocks = 3156 cylinders * 8 heads * 176 (1K) sectors

o ST39173(N,ND,W,WD,WC,FC)

Values Read from Drive:
17783240 blocks = 7502 partial cylinders * 10 heads * 237 sectors
An arbitrary SUN geometry:
17777370 blocks = 7499+2 cylinders * 10 heads * 237 sectors

o ST410800(N,ND,W,WD)

Values Read from Drive:
17755613 blocks = 4982 partial cylinders * 27 heads * 132 sectors
An arbitrary SUN geometry:
17752284 blocks = 4979+2 cylinders * 27 heads * 132 sectors
An arbitrary HP geometry:
8876142 (1K) blocks = 4981 cylinders * 27 heads * 66 (1K) sectors

Note: HP/UX versions earlier than 10, support ONE 4GB (or even 2GB) file system. Refer to our HP vendor information for patches.

o ST51080N

Values Read from Drive:
2109840 blocks = ? partial cylinders * ? heads * ? sectors
An arbitrary SUN geometry:
2109500 blocks = 4217+2 cylinders * 4 heads * 125 sectors
An arbitrary HP geometry:
1054744 (1K) blocks = 4253 cylinders * 4 heads * 62 (1K) sectors
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Hewlett-Packard Company

o 97548

Values Read from Drive:
1296511 blocks = 1474 partial cylinders * 16 heads * 55 sectors
A complete factor and arbitrary SUN geometry:
1296512 blocks = 1445+2 cylinders * 16 heads * 56 sectors
An arbitrary HP geometry:
648256 (1K) blocks = 1447 cylinders * 16 heads * 28 (1K) sectors

o 97549

Values Read from Drive:
1956863 blocks = 1911 partial cylinders * 16 heads * 64 sectors
A complete factor and arbitrary SUN geometry:
1956864 blocks = 1909+2 cylinders * 16 heads * 64 sectors
An arbitrary HP geometry:
978432 (1K) blocks = 1911 cylinders * 16 heads * 32 (1K) sectors

o 97560

Values Read from Drive:
2647079 blocks = 1963 partial cylinders * 19 heads * 71 sectors
A complete factor and arbitrary SUN geometry:
2647080 blocks = 1933+2 cylinders * 19 heads * 72 sectors
An arbitrary HP geometry:
1323540 (1K) blocks = 1935 cylinders * 19 heads * 36 (1K) sectors

o C2247

Values Read from Drive:
2054863 blocks = 1664 partial cylinders * 13 heads * 95 sectors
An arbitrary SUN geometry:
2053805 blocks = 1661+2 cylinders * 13 heads * 95 sectors
An arbitrary HP geometry:
1027104 (1K) blocks = 1646 cylinders * 13 heads * 48 (1K) sectors

o C2490

Values Read from Drive:
4165271 blocks = 2163 partial cylinders * 18 heads * 107 sectors
An arbitrary complete factoring:
4165272 blocks = 2822 cylinders * 18 heads * 82 sectors
An arbitrary SUN geometry:
4165272 blocks = 2820+2 cylinders * 18 heads * 82 sectors
An arbitrary HP geometry:
2082636 (1K) blocks = 2822 cylinders * 18 heads * 41 (1K) sectors
Another arbitrary HP geometry:
2082582 (1K) blocks = 2183 cylinders * 18 heads * 53 (1K) sectors

o C3010

Values Read from Drive:
3912171 blocks = 2168 partial cylinders * 19 heads * 95 sectors
An arbitrary SUN geometry:
3911435 blocks = 2165+2 cylinders * 19 heads * 95 sectors
An arbitrary HP geometry:
1952896 (1K) blocks = 2336 cylinders * 19 heads * 44 (1K) sectors

o C3323

Values Read from Drive:
2056007 blocks = 2469 partial cylinders * 7 heads * 119 sectors
An arbitrary SUN geometry:
2055844 blocks = 2466+2 cylinders * 7 heads * 119 sectors

o C3724

Values Read from Drive:
2354659 blocks = 3388 partial cylinders * 5 heads * 139 sectors
An arbitrary SUN geometry:
2354660 blocks = 3386+2 cylinders * 5 heads * 139 sectors
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International Business Machines

o 0662-S12

Values Read from Drive:
2055033 blocks = 3842 partial cylinders * 5 heads * 107 sectors
An arbitrary SUN geometry:
2054935 blocks = 3839+2 cylinders * 5 heads * 107 sectors

o 0664-CSH

Values Read from Drive:
7866078 blocks = 2820 partial cylinders * 30 heads * 93 sectors
An arbitrary SUN geometry:
7865010 blocks = 2817+2 cylinders * 30 heads * 93 sectors
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