Table of Contents
Advertisement
Chapter 8 Advanced Copy Management
8.2 Functions in the Action Area for Advanced Copy
•
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 DX 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 DX 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): 200 Mbit/s (All available for REC)
The number of lines (*3): 4 (200 Mbit/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): 100 Mbit/s (100 Mbit/s out of 200 Mbit/s line
bandwidth is available for REC)
The number of lines (*3): 2 (100 Mbit/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): 200 Mbit/s (All available for REC)
The number of lines (*3): 2 (200 Mbit/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): 200 Mbit/s (All available for REC)
The number of lines (*3): 2 (200 Mbit/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
→ The [Copy Path Creation Device Selection] screen appears.
ETERNUS Web GUI User's Guide
Copyright 2011 FUJITSU LIMITED
230
P2X0-1090-02ENZ0
Advertisement
Table of Contents
