Fujitsu Eternus DX200F, User Manual

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Appendix A Parameter List
A.7 Advanced Copy Management
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED P2X0-1270-13ENZ0
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Line Setting
• Connection Type
• Link Speed
Description Select the connection type for the remote storage system.
Input condition/
Display contents
•
Remote
Connecting the local and remote storage systems via a line.
•
Direct
Connecting the local and remote storage systems without a line.
Even in connection via a switch, select "Direct" when not using a line.
Description Specify the link speed (*1) for connection with the remote storage system. This item can
be set when the "Connection Type" is "Remote".
*1: For the "Link Speed" field, specify the WAN bandwidth (a total of multiple lines, if
used) that can be actually used for REC. For some cases such as using the
bandwidth control device, the WAN bandwidth that can be used for REC is
designated. In this case, specify the designated value. To control WAN bandwidth,
using the bandwidth control device is required.
When using a carrier equipment with the compression function, specify the
bandwidth (a total of multiple lines, if used) that can be used after compression.
In the ETERNUS Disk storage systems, data compression is unavailable. To
compress data, using a carrier equipment with the compression function is
required.
Example 1: When the bandwidth control device is not used
Line bandwidth (*2): 200Mbit/s (All available for REC)
The number of lines (*3): 4 (200Mbit/s for all)
Link speed = 200 (Mbit/s)
x
4 = 800 (Mbit/s)
Example 2: When the bandwidth control device is used
Line bandwidth with bandwidth limit (*2): 100Mbit/s (100Mbit/s out of 200Mbit/
s line bandwidth is available for REC)
The number of lines (*3): 2 (100Mbit/s for all)
Link speed = 100 (Mbit/s)
x
2 = 200 (Mbit/s)
Example 3: When the line device has no compression function
Line bandwidth (*2): 200Mbit/s (All available for REC)
The number of lines (*3): 2 (200Mbit/s for all)
Compression ratio: 0 (%) (No compression)
Link speed = 200 (Mbit/s)
x
2 / (1 - 0 (%)) = 400 (Mbit/s)
Example 4: When the line device has the compression function
Line bandwidth (*2): 200Mbit/s (All available for REC)
The number of lines (*3): 2 (200Mbit/s for all)
Compression ratio: 20 (%) (20% for all)
Link speed = 200 (Mbit/s)
x
2 / (1 - 20 (%)) = 500 (Mbit/s)
*2: The line bandwidth that the user has signed up to be used for REC
*3: The number of lines that the user has signed up to be used for REC
Input condition/
Display contents
•
Up to 5-digit decimal number
•
1- 65535 (Mbit/s)
To change the link speed, create a copy path with a new link speed by using this function, and apply the created
copy path to the related storage systems.