Configuring Third-Party Storage Devices: Disabling Devices

Multipathing can be disabled for all devices of a certain vendor ID/product ID combination. This exclusion is specified in the scsi_vhci.conf file.

How to Disable Third-Party Devices

1. Become an administrator.
2. Copy the /kernel/drv/scsi_vhci.conf file to the /etc/driver/drv/scsi_vhci.conf file.
3. Add the vendor ID and product ID entries to the /etc/driver/drv/scsi_vhci.conf file.

   The vendor ID and product ID are the vendor and product identification strings that the device returns in SCSI INQUIRY data. The vendor ID must be eight characters long. You must specify all eight characters even if the trailing characters are spaces. The product ID can be up to 16 characters long.

   scsi-vhci-failover-override =
   "VendorID1ProductID1", "NONE",
   "VendorID2ProductID2", "NONE",
   ...
   "VendorIDnProductIDn", "NONE";

   The entries in the preceding example are separated by the ’,’ character (a comma) and the last vendor/product entry is terminated by the ’;’ character (a semicolon). For example, to add a device from vendor “ACME” with a product ID of “MSU,” and a vendor device from vendor “XYZ” with product ID “ABC,” you would add the following lines to the file /etc/driver/drv/scsi_vhci.conf:

   scsi-vhci-failover-override =
   "ACME    MSU", "NONE",
   "XYZ     ABC", "NONE";

4. Save and exit the scsi_vhci.conf file.
5. Start the reboot and configuration process.

   # stmsboot -u

   You are prompted to reboot. During the reboot, the /etc/vfstab file and the dump configuration are updated to reflect the device name changes.

6. If necessary, perform the device name updates as described in Enabling and Disabling Multipathing.