Replication port host mode options

Open-Systems Host Attachment Guide

Version
9.8.7
Audience
anonymous
Part Number
MK-90RD7037-31

The following host mode options should only be set on the host group configured on ports designated for replication. When applied to the host group of ports designated for replication, these HMOs will cause a link down and up event. Therefore, it is recommended to apply these HMOs prior to putting the link in production. Furthermore, all supported VSP 5000 series operating systems can send traffic through the designated replication link when these HMOs are enabled on the host group of the designated replication ports. Ensure that the desired HMOs are set on the host group of both the source and the destination designated replication group.

To keep the configuration simple, administrators are advised to simply set these HMOs on the default host group of the ports designated for replication and to keep LUN security turned off. If you must enable LUN security, then you must create an arbitrary host group on the designated replication port, register the WWPN of the desired remote array replication port to the host group, apply the desired host mode options to this host group, and turn LUN security on. To delete this arbitrary host group, first set the disable the host mode option on the host group.

HMO Function Host mode Description
49 16GFC CHA Any Set this HMO only on your 16GFC CHA ports. Do not set this HMO on your 32GFC CHA ports.
50 16GFC CHA Any Set this HMO only on your 16GFC CHA ports. Do not set this HMO on your 32GFC CHA ports.
51 Round Trip Set Up Option Any Use this HMO if you want to adjust the response time of the host I/O, for example when the distance between the primary and secondary storage systems in the TrueCopy or global-active device pair is long (approximately 100 km) and point-to-point topology is used.