HP Surestore Disk Array 12h SGI IRIX Configuration Guide - Page 46

Notes for Table 1 Through Table 5 1. The value of pc is calculated as follows: pc = nc * nt * ns The nc of OPEN-K/3/8/9/E CVS corresponds to the capacity specified by SVP or remote console. The CVS size of OPEN-K/3/8/9/E is specified by capacity (megabyte), not by number of cylinders. The number of cylinders of an OPEN-K/3/8/9/E CVS volume can be obtained by the following calculation (↑↑ means round up to integer). Number of cylinders = ↑(specified capacity in megabytes from SVP or remote console) × 1,024 / 720↑ Example When 37 MB is specified for an OPEN-3 CVS volume from SVP, the number of cylinders of the OPEN-3 CVS can be calculated as follows: 37 × 1,024 / 720 = 52.62 ↑52.62↑ = 53 The OPEN-3 CVS volume has 53 cylinders. 2. The value of pa must be equal to or more than 131,072. 3. The number of cylinders of a Logical Unit Size Expansion (LUSE) composed of OPEN-K/3/8/9/E CVS volumes corresponds to the capacity specified by the SVP or the remote console. CVS size of OPEN-K/3/8/9/E is specified by the capacity (megabyte), not by the number of cylinders. The number of cylinders of the OPEN-K/3/8/9/E CVS volume can be obtained by the following calculation (↑↑ means round up to integer): Number of cylinders = ↑(specified capacity in megabytes from SVP or remote console) × 1,024 / 720↑ × n where n is the number of concatenated volumes for LUSE. Example When 37 MB is specified for the OPEN-3 CVS volume and the four volumes are concatenated, the number of cylinders of the OPEN-3 CVS can be calculated as follows: ↑37 × 1,024 / 720↑ × 4 = ↑52.62↑ × 4 = 53 × 4 = 212 The LUSE for the OPEN-3 CVS volume has 212 cylinders. 46 hp surestore disk array xp operating system configuration guide: SGI IRIX