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Lenovo S3200 Setup Manual: Connecting Hosts: S3200 Switch Attach-four Servers/multiple Switches/san Fabric

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Four servers/multiple switches/SAN fabric
S3200 SAS
Server 1
Server 3
Figure 29 Connecting hosts: S3200 switch attach—four servers/multiple switches/SAN fabric
S3200/S2200 controller enclosure iSCSI considerations
When installing an S3200/S2200 iSCSI controller enclosure, use at least three ports per server—two for
the storage LAN, and one or more for the public LAN(s)—to ensure that the storage network is isolated
from the other networks. The storage LAN is the network connecting the servers—via switch attach—to the
controller enclosure (see
NOTE: These considerations apply to iSCSI and combination FC-and-iSCSI controller solutions only.
IP address scheme for the controller pair — two iSCSI ports per controller
The S3200 can use port 2 of each controller as one failover pair, and port 3 of each controller as a
second failover pair for iSCSI traffic. Port 2 of each controller must be in the same subnet, and port 3 of
each controller must be in second subnet. See
iSCSI port numbering.
For example (with a netmask of 255.255.255.0):
• Controller A port 2: 10.10.10.100
• Controller A port 3: 10.1 1.10.120
• Controller B port 2: 10.10.10.1 10
• Controller B port 3: 10.1 1.10.130
The S3200/S2200 can use port 0 of each controller as one failover pair, and port 1 of each controller as
a second failover pair. Port 0 of each controller must be in the same subnet, and port 1 of each controller
must be in second subnet. See for iSCSI port numbering.
For example (with a netmask of 255.255.255.0):
• Controller A port 0: 10.10.10.100
• Controller A port 1: 10.1 1.10.120
• Controller B port 0: 10.10.10.1 10
• Controller B port 1: 10.1 1.10.130
Figure 27
on page 38 and
Controller enclosure — rear panel layout
0A
S
A
6Gb/s
S
0B
S
6Gb/s
A
S
SAN
Figure
29).
Lenovo Storage S3200/S2200 Setup Guide
Server 2
Server 4
on page 15 for
39

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