IBM System storage DS6000 Series, Attachment Manual

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v
Description
4. From the Define host ports screen, specify the host ports for this host. Click
Add to add each host port to the defined host ports table.
5. From the Define host WWPN screen, specify the world-wide port names for the
selected hosts. When finished, click Next .
6. From the Select storage images screen, specify the storage image for
attachment. Click Add to add the storage image to the selected storage images
table. When finished, click Next .
7. From the Specify storage image parameters screen, specify the following
parameters for each storage image.
v Host attachment identifier
v Volume Group for host attachment
v
Type of I/O port (any valid storage image I/O port or a specific I/O port)
8. Click the Apply assignment button to apply the current attachment assignment.
Use this button to go through this page repeatedly for each host attachment
identifier that you want to assign to the storage image. When finished, click OK .
9. From the Verification screen, verify the data that represents the new host
attachments. When finished, click Finish .
Configuring fibre-channel host adapter ports for OpenVMS
To configure the host adapter ports, use the IBM TotalStorage DS Storage Manager.
OpenVMS fibre-channel considerations
When you assign an OpenVMS host to a specific storage unit adapter port, ensure
that you do not assign any other host type to the same storage unit adapter. Do not
allow any other host that is not assigned to that adapter to access the
OpenVMS-specific storage unit adapter port.
Using fabric zoning, you must create a zone strictly for OpenVMS hosts. The
storage unit fibre-channel adapter port to which you assigned a storage unit host
must reside exclusively within this OpenVMS zone. Failure to ensure this exclusivity
might cause an OpenVMS host to hang. If this occurs, you must reboot the
OpenVMS host.
OpenVMS UDID Support
Each OpenVMS fibre-attached volume requires a user-defined identifier or unit
device identifier (UDID). This is a nonnegative integer that is used in the creation of
the OpenVMS device name. All fibre-attached volumes have an allocation class of
$1 , followed by the letters, DGA , followed by the UDID. All storage unit LUNs that you
assign to an OpenVMS system must have a UDID so that the operating system can
detect and name the device. LUN 0 also must have a UDID; however, the system
displays LUN 0 as
$1GGA<UDID>
, not as
$1DGA<UDID>
. See the HP document,
Guidelines for OpenVMS Cluster Configurations for more information about
fibre-attached storage devices.
You can use the IBM TotalStorage DS Storage Manager or the DS6000 command
line interface (DS CLI) to set a value in a storage unit volume name field that is
used by AlphaServer systems as the UDID for the volume. (In this document, we
provide DS CLI examples.) You can find the DS CLI on the CD that you receive
with the storage unit. See the IBM TotalStorage DS6000 Command-Line Interface
User’s Guide for more information.
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DS6000 Host Systems Attachment Guide