Host mode options

The following table lists host mode options that are available to use for configuring hosts on your storage system.

No.

Host mode options

When to select this option

2

VERITAS Database Edition/ Advanced Cluster

Select this option when VERITAS Database Edition/Advanced Cluster for Real Application Clusters or VERITAS Cluster Server 4.0 or later (I/O fencing function) is used.

6

TPRLO

Select this option when all of the following conditions are satisfied:

  • The host mode 0C Windows or 2C Windows Extension is used.

  • The Emulex host bus adapter is used.

  • The mini-port driver is used.

  • TPRLO=2 is specified for the mini-port driver parameter of the host bus adapter.

7

Automatic recognition function of LUN

Select this option when all of the following conditions are satisfied:

  • The host mode 00 Standard or 09 Solaris is used.

  • SUN StorEdge SAN Foundation Software Version 4.2 or higher is used.

  • You want to automate recognition of increase and decrease of devices when genuine SUN HBA is connected.

12

No display for ghost LUN

Select this option when all of the following conditions are satisfied:

  • The host mode 03 HP is used.

  • You want to suppress creation of device files for devices to which paths are not defined.

13

SIM report at link failure1

Select this option when you want to be informed by SIM (service information message) that the number of link failures detected between ports exceeds the threshold.

14

HP TruCluster with TrueCopy function

Select this option when all of the following conditions are satisfied:

  • The host mode 07 Tru64 is used.

  • You want to use TruCluster to set a cluster to each of primary volume and secondary volume for TrueCopy or Universal Replicator.

15

HACMP

Select this option when all of the following conditions are satisfied:

  • The host mode 0F AIX is used.

  • HACMP 5.1 Version 5.1.0.4 or later, HACMP4.5 Version 4.5.0.13 or later, or HACMP5.2 or later is used.

22

Veritas Cluster Server

Select this option when Veritas Cluster Server is used.

23

REC Command Support 1

Select this option when you want to shorten the recovery time on the host side if the data transfer failed.

25

Support SPC-3 behavior on Persistent Reservation

Select this option when one of the following conditions are satisfied:

  • Using Windows Server Failover Clustering (WSFC)

  • Using Microsoft Failover Cluster (MSFC)

  • Using Symantec Cluster Server, also known as Veritas Cluster Server (VCS)

  • Using a configuration other than above with the PERSISTENT RESERVE OUT (Service Action=REGISTER AND IGNORE EXISTING KEY) command, change the status response from Reservation-Conflict to Good-Status when there is no registered key to be deleted.

33

Set/Report Device Identifier enable

Select this option when all of the following conditions are satisfied:

  • Host mode 03 HP or 05 OpenVMS2 is used.

  • You want to enable commands to assign a nickname of the device.

  • You want to set UUID to identify a logical volume from the host.

39

Change the nexus specified in the SCSI Target Reset

Select this option when you want to control the following ranges per host group when receiving Target Reset:

  • Range of job resetting.

  • Range of UAs (Unit Attentions) defined.

40

V-VOL expansion

Select this option when all of the following conditions are satisfied:

  • The host mode 0C Windows or 2C Windows Extension is used.

  • You want to automate recognition of the DP-VOL capacity after increasing the DP-VOL capacity.

41

Prioritized device recognition command

Select this option when you want to execute commands to recognize the device preferentially.

43

Queue Full Response

Select this option when the command queue is full in the storage system connecting with the HP-UX host, and To respond Queue Full, instead of Busy, from the storage system to the host.

49

BB Credit Set Up Option1

Select this option when you want to adjust the number of buffer-to-buffer credits (BBCs) to control the transfer data size by the Fibre Channel, for example when the distance between MCU and RCU of the TrueCopy (or global-active device) pair is long (approximately 100 kilometers) and the Point-to-Point topology is used.

Use the combination of this host mode option and the host mode option 50.

50

BB Credit Set Up Option2

Select this option when you want to adjust the number of buffer-to-buffer credits (BBCs) to control the transfer data size by the Fibre Channel, for example when the distance between MCU and RCU of the TrueCopy (or global-active device) pair is long (approximately 100 kilometers) and the Point-to-Point topology is used.

Use the combination of this host mode option and the host mode option 49.

51

Round Trip Set Up Option3

Select this option to adjust the response time of the host I/O, for example when the distance between MCU and RCU of the TrueCopy (or global-active device) pair is long (approximately 100 kilometers) and the Point-to-Point topology is used.

54

(VAAI) Support Option for the EXTENDED COPY command

Select this option when the VAAI (vStorage API for Array Integration) function of VMware ESX/ESXi 4.1 is used.

60

LUN0 Change Guard

Select this option when HP-UX 11.31 is used, and when you want to prevent adding or deleting of LUN0.

63

(VAAI) Support Option for vStorage APIs based on T10 standards

Select this option when you connect the storage system to VMware ESXi 5.0 or later and use the VAAI function for T10.

67

Change of the ED_TOV value

Select this option when the OPEN Fibre Channel port configuration applies that the topology is the Fibre Channel direct connection.

68

Support Page Reclamation for Linux

Select this option when using the Page Reclamation function from the environment which is being connected to the Linux host.

71

Change the Unit Attention for Blocked Pool-VOLs

Select this option when you want to change the unit attention (UA) from NOT READY to MEDIUM ERROR during the pool-VOLs blockade.

72

AIX GPFS Support

Select this option when using General Parallel File System (GPFS) in the storage system connecting to the AIX host.

73

Support Option for WS2012

Select this option when using following functions provided by Windows Server 2012 (WS2012) from the environment which is being connected to the WS2012 host.

  • Thin Provisioning function

  • Offload Data Transfer (ODX) function

78

The non-preferred path option

Select this option when all of following conditions are satisfied:

  • Global-active device is used in the configuration with the data centers (Metro configuration).

  • Dynamic Link Manager is used as the alternative path software.

  • The host group is on the non-optimized path of Dynamic Link Manager.

  • The performance deterioration of I/O responses can be avoided without I/O using the non-optimized path of Dynamic Link Manager.

80

Multi Text OFF

By using the iSCSI interface, select this option if the storage system connects with the host of which OS is not supported of the Multi Text function. (For instance, connecting the storage system and the host of RHEL5.0 which does not support the MultiText-function).

81

NOP-In Suppress Mode

In the environment by iSCSI connection, the delay replying of the Delayed Acknowledgment function which is located on the upper layer is restrained by sending NOP-IN of executing of sense commands such as Inquiry, Test unit ready, or Mode sense. However, select this option when connecting the storage system and the host which is not necessary of the NOP-IN sending. However, when connecting the storage system and the host which does not need of the NOP-IN sending, select this option.

For instance:

  • When connecting the storage system and the Open Enterprise Server of Novell Co., Ltd..

  • When connecting the storage system and winBoot/i of emBoot Co., Ltd..

82

Discovery CHAP Mode

Select this option when the CHAP authentication is performed at the time of the discovery login In the iSCSI connection environment.

For instance: When the CHAP authentication is performed at the time of the discovery login in the iSCSI environment of the VMware host and storage system.

83

Report iSCSI Full Portal List Mode

Select this option when configuring alternate paths in the environment of connecting the VMware host and storage system: If waiting of replying of the target information from the host option mode 83 enabled port other than ports of discovery login, select this host mode option.

When both of the following are satisfied, select this host mode option:

  • Configuring alternate paths in the environment of connecting the VMware host and storage system

  • Waiting for replying of the target information from the ports other than ports of discovery login

96

Change the nexus specified in the SCSI Logical Unit Reset

Select this option when you want to control the following ranges per host group when receiving LU Reset:

  • Range of job resetting.

  • Range of UAs (Unit Attentions) defined.

97

Proprietary ANCHOR command support

Select this option when connecting to Hitachi NAS Platform.

100

Hitachi HBA(Fabric Emulation Mode) Connection Option1

Select this option when connecting the 8 Gbps channel port (in the storage system) and the adapter of BladeSymphony/HA8000 Hitachi Gigabit Fibre Channel by using the Fabric Emulation mode.

102

(GAD)

Standard Inquiry Expansion for Command Suite

Select this option when all of the following conditions are satisfied:

  • The OS of the host is Windows or AIX, and the MPIO function is used.

  • Global-active device is used.

  • Command Suite is used.

Notes:

  1. Configure these host mode options only when requested to do so.

  1. Set the UUID when you set host mode option 33 and host mode 05 openvms is used.

  1. Set the host mode option 51 for ports on the remote site of the TrueCopy pair or the global-active device pair.