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Chapter 8 Advanced Copy Management
8.2 Functions in the Action Area for Advanced Copy
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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● Line Setting
• Connection Type
Select the connection type for the remote device.
- Remote
Connecting the local and remote devices via a line.
- Direct
Connecting the local and remote devices without a line.
Even in connection via a switch, select "Direct" when not using a line.
• Link Speed
Specify the link speed (*1) for connection with the remote device. This item can be set when the
"Connection Type" is "Remote".
The following input conditions apply:
- Up to 5-digit decimal number
- 1- 65535 (Mbit/s)
*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. In the ETERNUS Disk
storage systems, the WAN bandwidth control is unavailable. To control WAN bandwidth, using the
bandwidth control device is required.
When using a line device 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 line device 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
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.