HP StorageWorks XP12000 HP StorageWorks XP Disk Array Configuration Guide: IBM - Page 35
Note 2, Open-3/8/9/e, Open-v
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Note 2: The devices are defined to the host as SCSI disk devices, even though the interface is Fibre Channel. Note 3: The command device (used for XP Raid Manager) is distinguished by -CM on the product name (for example, OPEN-3-CM, OPEN-3-CVS-CM). Note 4: The device capacity can sometimes be changed by the BIOS or host adapter board. This may make actual capacity different from that listed in the table. Note 5: The number of blocks for a CVS volume is calculated as follows: # of blocks = (# of cylinders) x (# of heads) x (# of sectors per track) Example For an OPEN-3 CVS volume with capacity = 37 MB: # of blocks = (53 cylinders-see Note 5) x (15 heads) x (96 sectors per track) = 76320 Example For an OPEN-V CVS volume with capacity = 49 MB: # of blocks = (53 cylinders-see Note 5) x (15 heads) x (128 sectors per track) = 101760 Note 6: The number of cylinders for a CVS volume is calculated as follows ( ... means that the value should be rounded up to the next integer): OPEN-3/8/9/E: The number of cylinders for a CVS volume = # of cylinders = (capacity (MB) specified by user) x 1024/720 Example For an OPEN-3 CVS volume with capacity = 37 MB: # of cylinders = 37 x 1024/720 = 52.62 (rounded up to next integer) = 53 cylinders OPEN-V: The number of cylinders for a CVS volume = # of cylinders = (capacity (MB) specified by user) x 16/15 Example For an OPEN-V CVS volume with capacity = 49 MB: # of cylinders = 49 x 16/15 = 52.26 (rounded up to next integer) = 53 cylinders OPEN-3/8/9/E: The number of cylinders for a CVS LUSE volume = # of cylinders = (capacity (MB) specified by user) x 1024/720 x n Example For a CVS LUSE volume with capacity = 37 MB and n = 4: # of cylinders = 37 x 1024/720 x 4 = 52.62 x 4 = 53 x 4 = 212 XP Disk Array Configuration Guide for IBM AIX 35