Compaq 307560-001 Novell GroupWise Performance Management on Compaq Servers - Page 18

Reviewing Migration Results

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ECG007.0897 WHITE PAPER (cont.) 1...8 The advantages of upgrading a server to a 100-Mb/s NIC while accommodating existing LAN clients with a bandwidth of 10 Mb/s are as follows. • Cost effectiveness: upgrading is not as expensive as converting all clients at the same time • Better throughput: aggregate network throughput is improved because the transmission speed is faster from the server to the hub • Ease of upgrade: replacing your 10-Mb/s NIC with a 100-Mb/s NIC is not a difficult process • No complex cable requirements: you can use your existing 10Mb/s cable The disadvantages of upgrading the server NIC to 100 Mb/s while leaving clients at 10 Mb/s are: • Replacing existing 10-Mb/s NICs with the more expensive 100Mb/s NICs might be cost-prohibitive, depending on the number of NICs being replaced. • Re-routing all existing clients to a switching hub is required. Depending on the number of clients, this can be an inconvenience to an administrator. Reviewing Migration Results NOTE: The testing tool NetBench used for network subsystem analysis, is not the same as and should not be confused with the test program mentioned previously in this paper. To compare and evaluate 10-Mb/s Ethernet and 100-Mb/s Ethernet, parallel test environments were set up in the integration testing labs at Compaq. The results, shown in Table 3, compare a 10-Mb/s Ethernet LAN with that of a 100-Mb/s Ethernet LAN. IntranetWare Performance Monitor indicates the total throughput for the NetFlex-3/P controller installed in the server. Compare the throughput of the 10-Mb/s NIC to that of the 100-Mb/s NIC. Theoretically, the maximum data transmission rate should increase by a factor of 10 when migrating from the 10Mb/s NIC to the 100-Mb/s NIC. Table 3 shows the NetBench 4.0 throughput results for a maximum of 10 clients running at 10-Mb/s and 100-Mb/s Ethernet. Table 3. Single Segment LAN Throughput Number of Clients Ethernet Bandwidth 4 10 Mb/s Total Throughput (Mb/s) 9.3 10 10 Mb/s 9.4 4 100 Mb/s 69.3 10 100 Mb/s 90.1

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W
HITE
P
APER
(cont.)
18
ECG007.0897
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The advantages of upgrading a server to a 100-Mb/s NIC while accommodating existing LAN
clients with a bandwidth of 10 Mb/s are as follows.
•
Cost effectiveness: upgrading is not as expensive as converting all
clients at the same time
•
Better throughput: aggregate network throughput is improved
because the transmission speed is faster from the server to the hub
•
Ease of upgrade: replacing your 10-Mb/s NIC with a 100-Mb/s
NIC is not a difficult process
•
No complex cable requirements: you can use your existing 10-
Mb/s cable
The disadvantages of upgrading the server NIC to 100 Mb/s while leaving clients at 10 Mb/s are:
•
Replacing existing 10-Mb/s NICs with the more expensive 100-
Mb/s NICs might be cost-prohibitive, depending on the number of
NICs being replaced.
•
Re-routing all existing clients to a switching hub is required.
Depending on the number of clients, this can be an inconvenience
to an administrator.
Reviewing Migration Results
NOTE
: The testing tool NetBench used for network subsystem analysis, is not the same as and
should not be confused with the test program mentioned previously in this paper.
To compare and evaluate 10-Mb/s Ethernet and 100-Mb/s Ethernet, parallel test environments
were set up in the integration testing labs at Compaq. The results, shown in Table 3, compare a
10-Mb/s Ethernet LAN with that of a 100-Mb/s Ethernet LAN. IntranetWare Performance
Monitor indicates the total throughput for the NetFlex-3/P controller installed in the server.
Compare the throughput of the 10-Mb/s NIC to that of the 100-Mb/s NIC. Theoretically, the
maximum data transmission rate should increase by a factor of 10 when migrating from the 10-
Mb/s NIC to the 100-Mb/s NIC. Table 3 shows the NetBench 4.0 throughput results for a
maximum of 10 clients running at 10-Mb/s and 100-Mb/s Ethernet.
Table 3. Single Segment LAN Throughput
Number of Clients
Ethernet Bandwidth
Total Throughput
(Mb/s)
4
10 Mb/s
9.3
10
10 Mb/s
9.4
4
100 Mb/s
69.3
10
100 Mb/s
90.1