05/25/87 This file lists some of the characteristics of various hard disks made by Seagate. I got this information from a small sales pamplet that came to my office. The explanation of the contents of the columns is below: Column 1 - The name of the type of drive Column 2 - The unformatted size in megabytes. Column 3 - The unformatted number of bytes per cylinder Column 4 - The unformatted number of bytes per track Column 5 - The formatted size in megabytes Column 6 - The formatted number of bytes per cylinder Column 7 - The formatted number of bytes per track Column 8 - The number of bytes per sector Column 9 - The number of sectors per track Column 10 - The total number of tracks on the disk Column 11 - The total number of cylinders on the disk Column 12 - The number of read/write heads Column 13 - The number of discs (platters) -----------------+-------+-------+------+------+------+------+------+------+-----+-----+--+--+ Columns | | | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |12|13| -----------------+-------+-------+------+------+------+------+------+------+-----+-----+--+--+ ST138R 38.40 62496 15624 32.70 53248 13312 512 26 2460 615 4 2 ST157R 57.70 93744 15624 49.10 79872 13312 512 26 3690 615 6 3 ST238R 38.40 62496 15624 32.70 53248 13312 512 26 2460 615 4 2 ST251R 51.20 62496 15624 43.60 53248 13312 512 26 3280 820 4 2 ST227R 76.90 93744 15624 65.50 79872 13312 512 26 4920 820 6 3 ST4077R 80.00 78120 15624 68.20 66560 13312 512 26 5120 1024 5 3 ST4144R 144.00 140616 15624 122.71 119808 13312 512 26 9216 1024 9 5 ST138N N/A N/A N/A 32.30 52736 13312 512 26 2452 613 4 2 ST157N N/A N/A N/A 48.60 79360 13312 512 26 3678 613 6 3 ST225N N/A N/A N/A 21.40 34816 8704 512 17 2460 615 4 2 ST251N N/A N/A N/A 43.10 52736 13312 512 26 3272 818 4 2 ST277N N/A N/A N/A 64.90 79360 13312 512 26 4908 818 6 3 ST4077N N/A N/A N/A 67.60 66048 13312 512 26 5120 1024 5 3 ST4096N N/A N/A N/A 83.90 73216 18432 512 36 4588 1147 4 3 ST4144N N/A N/A N/A 122.10 119296 13312 512 26 9216 1024 9 5 ST4192N N/A N/A N/A 168.50 146944 18432 512 36 9176 1147 8 5 ST125 25.60 41664 10416 21.40 34816 8704 512 17 2460 615 4 2 ST138 38.40 62496 10416 32.10 52224 8704 512 17 3690 615 6 3 ST213 12.80 20832 10416 10.70 17408 8704 512 17 1230 615 2 1 ST225 25.60 41664 10416 21.40 34816 8704 512 17 2460 615 4 2 ST251 51.20 62496 10416 42.80 52224 8704 512 17 4920 820 6 3 ST4026 25.60 41664 10416 21.40 34816 8704 512 17 2460 615 4 3 ST4038 38.20 52080 10416 31.90 43520 8704 512 17 3665 733 5 3 ST4051 50.90 52080 10416 42.50 43520 8704 512 17 4885 977 5 3 ST4096 96.00 93744 10416 80.20 78336 8704 512 17 9216 1024 9 5 Perhaps somebody with information about other manufacturers' hard disks could add their information to this file and upload it again. John McKown [72325,1705]