Sun StorageTek[TM] 99XX: Host Modes

Asset ID:	1-71-1008808.1
Update Date:	2012-07-30
Keywords:

Solution Type Technical Instruction Sure

Solution 1008808.1 : Sun StorageTek[TM] 99XX: Host Modes

Applies to:

Sun Storage 9910 System - Version: Not Applicable and later   [Release: N/A and later ]
Sun Storage 9960 System - Version: Not Applicable and later    [Release: N/A and later]
Sun Storage 9970 System - Version: Not Applicable and later    [Release: N/A and later]
Sun Storage 9980 System - Version: Not Applicable and later    [Release: N/A and later]
Sun Storage 9985 System - Version: Not Applicable and later    [Release: N/A and later]
All Platforms

Goal

Description

On the StorEdge[TM] 99x0 series storage arrays, host modes are defined depending on the operating system that will be accessing the LUNs.

On the 9910 and 9960 arrays, the host mode is defined per port. For the 9970, 9980, 9985, 9990, 9985V and 9990V, the host mode is defined per host group on the port.

WARNING: Changing host modes on USP V systems that are already installed and configured is disruptive and requires the server to be rebooted.

The path from the host needs to be offline (no I/O activity), so, generally, you need to shutdown the host before you change Host Mode. Host modes cause host reserves to be handled differently, implement special host functions, or support host commands differently. And since it cannot be known what operations the host is performing during the change, it was designed to be performed when the host is not accessing the LUNs.

Solution

Steps to Follow

Sun StorEdge[TM] 99x0: Host Modes

00 Standard
03 New HP 
04 Sequent
05 Open VMS
07 HP Tru64 UNIX
08 Old HP 
09 Solaris[TM] & VxVM - DMP
0A Netware
0C Windows NT/2000
0F AIX
All Others Reserved

Host mode 00 will be used for Linux (Red Hat, SuSE) , SGI IRIX, and NetApp Gateway Filers (gFiler).
The difference between 03 and 08 is that 03 allows for more than 8 luns per target on the HP-UX host.
Mode 08 is not applicable to the 9970 and 9980 series arrays, mode 03 would be used for HP-UX hosts.
VMWare ESX requires host mode 0A. ( 9990V - 9985V arrays has host mode 01 for VMware )
Host Mode 21 is for VMware Extension to create LUSE volumes
0C is required for support of MSCS (cluster) failover and to recognize more than 8 luns.
Host Mode 2C is for WindowsNT/2000 host expansion mode (Online LUSE)

The host mode can be set from the Remote Console, HiCommand and in Storage Navigator.

Storage Navigator (9970 - 9980 - 9990 - 9985 - 9990V - 9985V): click on the second icon down on the left of the screen which will be LUN Management / LUN Security. In the LUN Manager tab, expand the view of the fibre ports to see host group(s) in it, click on the desired group to change the host group to the correct host mode.

Remote Console (9910 - 9960): choose the LUN Manager button from the main window, then in the SCSI PATH tab, you will see s 'Host Mode' button.

HiCommand: in the Physical View tab, select the desired array then port to open the 'Port Information' panel where the Host Mode field will be available for modification.

For more information refer to Host Configuration Guides delivered with array documentation.

Internal Comments
You can also find Host Configuration Guides on TSC-Storage page on Oracle internal network
http://tsc-storage.us.oracle.com/products/T99x0/documentation.html
The following is strictly for the use of Sun employees:
These host modes are defined, but not for customer use:
0D IO Trace mode
@ 0E HI-UX (Hitachi HP-UX) mode

@ 0E and 1E are Internal Hitachi modes and shouldn't be confused
with standard HP-UX. This host mode wouldn't be used outside
Hitachi and should not be implemented at customer sites.

@ The host modes can also be changed from the SVP (Modify
Mode->Install->Change Configuration->SCSI I/F
Configuration->Host Mode button).
Since the SVP is a tool reserved for onsite engineers, customers should always use one of the above methods.
Previously Published As
52101

Change History
Date: 2004-10-22
User Name: 7058
Action: Approved
Comment: Added trademark to first instance of Sun StorEdge 99x0 in text.
Reformatted doc. It had a weird format carried over from migration from kmscreator. Looks better now.
changed instances of lun to LUN for consistency.

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