HP StorageWorks XP10000 - Disk Array Podręcznik konfiguracji - Strona 29

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HP StorageWorks XP10000 - Disk Array Podręcznik konfiguracji

Note 4:

This capacity is the maximum size which can be entered using the lvcreate command. 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) × (# of heads) × (# of sectors per track)

The number of sectors per track is 128 for OPEN-V and 96 for the other emulation types.

Example

For an OPEN-3 CVS volume with capacity = 37 MB:

# of blocks = (53 cylinders–see Note 5) × (15 heads) ×

(96 sectors per track) = 76320

Example

For an OPEN-V CVS volume with capacity = 49 MB:

# of blocks = (53 cylinders–see Note 5) × (15 heads) ×

(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) × 1024/720

Example

For an OPEN-3 CVS volume with capacity = 37 MB:

# of cylinders =

(rounded up to next integer) = 53 cylinders

OPEN-V: The number of cylinders for a CVS volume = # of cylinders = (capacity (MB) specified by

user) × 16/15

Example

For an OPEN-V CVS volume with capacity = 49 MB:

# of cylinders =

(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) × 1024/720 × n

Example

For a CVS LUSE volume with capacity = 37 MB and n = 4:

# of cylinders =

OPEN-V: The number of cylinders for a CVS LUSE volume = # of cylinders = (capacity (MB) specified

by user) × 16/15 × n

Example

For an OPEN-V CVS LUSE volume with capacity = 49 MB and n = 4:

# of cylinders =

37 × 1024/720

49 × 16/15

52.26

37 × 1024/720

× 4 =

49 × 16/15

× 4 =

XP Disk Array Configuration Guide: OpenVMS

52.62

× 4 = 53 × 4 = 212

52.26

× 4 = 53 × 4 = 212