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MediaVault 4440 User Manual
1:1 Relational Create eight zones:
•Zone 1 contains ports 1 and 5
•Zone 2 contains ports 2 and 6
•Zone 3 contains ports 1 and 7
•Zone 4 contains ports 2 and 8
•Zone 5 contains ports 3 and 5
•Zone 6 contains ports 4 and 6
•Zone 7 contains ports 3 and 7
•Zone 8 contains ports 4 and 8
In the Plain and Simple configuration, the setting works, though occasionally one channel of the array might test the corresponding channel of the other array and/or the other computer, causing a very slight amount of extra traffic on the line. The
SAN Software Examples
Example 1
Here is a simple SAN software example, using two
At first, everything seems OK, until one computer formats the array. The other computer thinks the array is unformatted and tries to erase the array whenever possible. If one computer writes files to the array, the directory will be in that computers' cache and the other computer might not see it. If the other computer writes to the array, the first computer might destroy those files, thinking that part of the array is blank.
To avoid this, SAN software is required. In it's simplest form, SAN software sends information to both computers that it is updating the array. This information is usually passed through Ethernet, rather than Fibre Channel.
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