HP XP Array Manager Software - Manual (Page 13)

Setting value of starting address (LBA) is the value which is input in the Cache
Residency window.
•
Ending value = (
↓Setting value of ending address (LBA) ÷ 512↓)
Round down the value that is calculated from the formula between the two downward
arrows (
↓) after the decimal point.
Setting value of ending address (LBA) is the value which is input in the Cache
Residency window.
•
Converted value of starting address = Starting value x 512
•
Converted value of ending address = ((Ending value + 1) x 512) - 1
b. For emulation types other than OPEN-V:
•
Starting value = (
↓Setting value of starting address (LBA) ÷ 96↓)
Round down the value that is calculated from the formula between the two downward
arrows (
↓) after the decimal point.
Setting value of starting address (LBA) is the value which is input in the Cache
Residency window.
•
Ending value = (
↓Setting value of ending address (LBA) ÷ 96↓)
Round down the value that is calculated from the formula between the two downward
arrows (
↓) after the decimal point.
Setting value of ending address (LBA) is the value which is input in the Cache
Residency window.
•
Converted value of starting address = Starting value x 96
•
Converted value of ending address = ((Ending value + 1) x 96) - 1
2. Calculate the number of addresses between the starting address and the ending address
calculated in procedure 1.
a.
For OPEN-V:
•
Number of addresses
= Converted value of ending address - Converted value of starting address + 1
Calculate the number of LBAs that are used by the user data.
b. For emulation types other than OPEN-V:
•
Number of LBAs
= Converted value of ending address - Converted value of starting address + 1
Calculate the number of LBAs that are used by the user data.
•
Number of slots = Number of LBAs ÷ 96
Convert the number of LBAs to the number of slots.
•
Number of addresses = Number of slots x 128
Convert the number of slots with 128 LBA.
3. Calculate the required cache size according to the operation modes, or the RAID levels to use
Cache Residency.
Required Cache Size for Cache Residency 13