Product guide

21
Symmetrix Fibre Channel with Qlogic HBAs on UnixWare 7
Fabric Configurations
Verifying Symmetrix
Configuration
Setup Checklist step 3
Symmetrix configuration is performed by an EMC Customer
Engineer (CE) through the Symmetrix service processor. The CE will
configure your Symmetrix with the following settings for each Fibre
Channel port:
a. If Disk Array Mode and Volume Set Addressing are disabled, the Symmetrix
defaults to Peripheral Address Mode for that port. (There is no bit setting for
peripheral mode.)
Proper Symmetrix LUN configuration is essental for SCO UnixWare 7
and the QLA2200. Unixware 7 will allow only 0 to 31 luns per target,
so to find 128 LUNs the OS scans four groups of 32 LUNs each. At
boot time the driver scans for LUN 0. If LUN 0 is not found, the
driver scans for LUN 32. If LUN 32 is not found, the driver scans for
LUN 64, and if LUN 64 is not found, the driver scans for LUN 96. If
Symmetrix LUN ranges do not start with 0, 32, 64 or 96, the host
cannot detect all LUNs.
Volume Logix LUN masking ranges must also begin with 0, 32 ,64, 96.
Extreme care must be taken when LUN masking with Volume Logix.
Variable Setting
Disk Array Mode (A-bit) Disabled
a
Volume Set Addressing (V-bit) Disabled
a
Hard Addressing (H-bit) Disabled
Loop ID N/A
Non-participating Mode (NP-bit) Disabled—accept soft- assigned address if
hard address is not available
Tag Command Queuing (T-bit) Enabled
Common Serial Number (C-bit) Disabled
Disable Queue Reset on Unit
Attention (D-bit)
Disabled
Point-to-Point Mode (PP-bit) Enabled