Dot Hill Systems II 200 FC - Manual (Page 79)

Chapter 4 Connecting Your Array 4-31
6. Verify the SES/PLD (programmable logic device) version of the expansion unit and the
RAID array.
To review the version information, using the SANscape CLI, type show
ses
. Or,
using SANscape, open the View Enclosure window.
7. If the SES/PLD version is not the same for the RAID array and the expansion unit,
download the latest SES/PLD firmware from the Dot Hill web site:
http://www.dothill.com .
a. Choose Support → Downloads.
b. Click Firmware Downloads.
c. Enter the required information, and click Submit.
d. Choose and download the appropriate SES/PLD firmware.
4.15 Connecting Ports to Hosts
In a default array configuration, channels 0, 1, 4, and 5 are host channels, so you can
directly connect an array to four host computers. SFP connectors are plugged into
channels 0 and 4 on the upper controller and channels 1 and 5 on the lower controller
for this purpose.
You can connect two additional host computers to channels 0 and 1 of a SANnet II 200
SATA array or SATA SE array. To support six host computers, however, you need to
insert SFPs in the four unpopulated host ports. Except for some clustering
configurations, when you connect two hosts to channel 0 or channel 1 on a SANnet II
200 SATA or SATA SE array, you must use host filtering if you want to control host
access in this configuration. Refer to the user documentation for your clustering
software to determine whether the clustering software can manage host access in this
configuration.
If you want to connect a SANnet II 200 FC array to more than four host computers, or
connect a SATA or SATA SE array to more than six host computers, without changing
the default configuration, you can connect these four host channels to ports on storage
switches in a storage area network (SAN) configuration.
When a fabric switch is connected to one port of channel 0 or channel 1 of a SATA or
SATA SE array, no connections can be made with the other three ports of that channel.
If channel 0 (port FC0) is connected to a fabric switch, for example, the second port of
channel 0 on that controller and the FC0 ports on a redundant controller cannot be
used.