Product guide
Table Of Contents
- Introduction
- Arbitrated Loop Configurations
- Fabric Configurations
- UnixWare 7 Fabric Environment
- Setup Checklist
- Verifying Symmetrix Configuration
- Verifying and Updating HBA BIOS-Level Configurations
- Scanning for the Symmetrix on an HBA BIOS Level
- Install the HBA Driver
- Changing System Configuration File Settings
- UnixWare 7 Conventions and Persistent Binding Information
- Beware of Ghost Names
- Configuring and Enabling Persistent Binding
- Troubleshooting
14
Symmetrix Fibre Channel with Qlogic HBAs on UnixWare 7
Arbitrated Loop Configurations
Understanding Disk
Device File Names
Setup Checklist step 7b
To better understand setting up a Symmetrix device, review the SCSI
disk naming conventions. Raw disk device filenames take two forms:
•/dev/rdsk/cCbBtTdDsS
• /dev/rdsk/cCbBtTdDpP
where:
• C is the occurrence of the host adapter board.
• B is the port designation for the specific HBA. (For a single-port
HBA, this value is 0.)
• T is the SCSI target ID. The Qlogic driver supports up to 32
targets per channel.
• D is the logical unit number (LUN) of the disk device. For a Fibre
Channel HBA, there can be up to 32 LUNs per target.
• S is the disk slice number. For any SCSI or Fibre Channel device, S
is in the range 0 through 184. The default number of slices is in
the range 0 through 15. Slice 0 always denotes the entire disk.
Never write data to disk 0.
• P is the fdisk partition number. P can range from 0 through 4. The
p0 node corresponds to the whole disk, and the p1 to p4 nodes
correspond to partitions displayed by the fdisk command.
During boot time, or if the command /sbin/sdiconfig -l is issued,
disks under UnixWare 7 are represented as shown in the following
example.