garys@hou2b.UUCP (#G.SEUBERT) (04/17/85)
In attempting to verify the numbers in the table on the 'mkfs(1m)'
manual page, I'd like a "disk guru" to check the following math:
disk size cyls blocks/cyl
RP03 81200 / 406 = 200
RM05 500384 / 823 = 608
3B20S 495520 / 815 = 608
looks good so far, right?? How about this one:
RP07 1008000 / 613 = 400?? (I get ~1600!)
We don't have many RP07s but it looks to me like 400 isn't even
close to the number to optimize performance. (The source for dcopy
agrees with me in that MAXCYL is set to 1600 with a comment stating:
"RP07 is this big".)
Am I off the wall or is it 'mkfs'? (we already hacked it once to allow
more than 1000 blocks per cylinder for 3B20 675Mb drives)
Gary Seubert - HOCC UNIX Support
HO 3D-212 x6456
[..!ihnp4!]hou2b!garys