HP StorageWorks XP24000 Continuous Access Software User and Reference Guide, v01 (T5278-96002, June 2007)

following values: the initial copy pace, the maximum number of maximum initial copy VOLs, the speed
of the line between the MCU and RCU, and the number of lines.
Initial Copy response time (ms) = (1[MB] / “Speed of line between MCU-RCU[MB/ms]
(*1)
”)
x (“initial co
py
pace”
(*2)
/ 15)
x (“max number of maximum initial copy VOLs
(*3)
”/
“Number of lines between MCU-RCU”
(*4)
)
(*1)
When you c onnect the MCU with the RCU without lines and so on, specify 0 .1 7 [MB/m s] in “Speed
of
line between MCU-RCU”.
(*2)
For “initial copy pace” in the formula above, see Table 17 on page 77.
(*3)
For “max number of maximum initial copy volumes”, use the value set up per storage system (see
“Changing the Option Settings of Storage System” on page 93). The default is 64.
(*4)
Even if “max number of maximum initial copy VOLs” / “Number of lines between MCU-RCU” is
larger than 16, specify “max number of maximum initial copy VO Ls” / “Number of lines bet ween
MCU-RCU” as 16.
Table 17 Initial Copy Pace for Calcul ating The Initial C opy Response Time
Operation
Perform Initial Copy Only
Pe rform Initial Copy and Update Copy at a Time
Initial Copy Pace
Specified at the Time
of
Pa ir Creation is 1 to 8
Initial Copy Pace
Specified at the Time
of
Pa ir Creation is 9 to 15
RAID
Manager
Initial copy pace specified
at
the time of pair creation
Initial copy pace specified
at
the time of pair creation
8
Remote
Web
Console
Initial copy pace specified
at
the time of pair creation
Initial copy pace specified
at
the time of pair creation
8
Table 18 Example setting
Round Trip
Time [ms]
Line Speed
b/w
MCU/
RCU [MB/ms]
Number of
Lines b/w
MCU/RCU
Initial Copy
Pace
Max.
Number of
Maximum
Initial Copy
VOLs
Round
Trip Time
Specified [ms]
0 0.1
4
15
64
160
30 0.1 4
15
64 220
100 0.1
4
15
64
360
To users who use t h e HP XP12000 Disk Array: To set the following parameters, use the System Option
window .
•
Maximum Initial Copy Activity (see “Changing the Option Settings of Storage System” on page 93)
•
Path Blockade Watch (see “Changing the Option Settings of Storage System”onpage93)
To change the RCU options:
1. Click the RCU Operation tab, and c lick the MCU&RCU display button.
2. Select and right-click the desired RCU in the list, click RCU Operation,and click Change RCU
Option to open the RCU Option dialog box (see Figure 28 on page 76).
3. O n the RCU Option dialog b ox, change the RCU o ptions as desired, and click Set to close the
RCU Option dialog box (or click Cancel to cancel the RCU option operation). The preview list
displays the requested change RCU option operation.
4. Verify the requested operation(s) displayed in the preview list.
To change the change RCU option operation, select the operation from the preview list,
right-click, and click Modify. To remove the operation, select it, right-click, and click Delete.
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