Assuming you have a 3390 (or something that looks like a 3390) then you get 12 4K blocks on a track, and 15 tracks on a cylinder. That adds up to 720K on a cylinder (12 * 4 * 15 = 720).
Note that there is some overhead for inodes and such, and you probably don't want to fill a HFS or ZFS dataset to more than 90%, so I always add about 20% to the amount of space I think I need. -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of James Melin Sent: Friday, July 22, 2005 12:14 PM To: [email protected] Subject: X EKCD DASD = Y formatted Linux space Is there a reliable formula, you can apply to EKCD formatted minidisks where you can say if application 'foo' needs 775 megs of disk space, and the inodes are 4096 bytes (or whatever size) then you need X many cylinders of minidisk space to accommodate that? I'm not all that concerned about subtleties such as what file system is in use, the granularity isn't that precise. I just want to know I'm not going to under-allocate. We're in the process of taking the first baby steps towards 64 bit SLES 9 and WebSphere 6 31 bit (Ask IBM why their 31 bit J2ee environment is only supported on SLES9 64 bit and not SLES9 31 bit - I have no idea) And I thought it would be a good point to move from tailored servers that sort of grew as needed to a identically configured cloneable images. There was way too much 'get it up and running' vs 'get it built right the first time' pressures over here, and I would prefer to take this change in OS level to do it right. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
