Seagate ST318404LC User's Guide download pdf (Page 11)

Dell Compellent Confidential HP-UX Best Practices 11i v2 and 11i v1

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Setup and Configuration

HP-UX 11i v2 and v1 with Controller Failover

Dell Compellent Storage Center employs two methods for high availability.

 Legacy Mode

 N_Port ID Virtualization (NPIV)

For more in-depth information on these two modes, please refer to Dell Compellent Storage Center

User Guide.

When attaching HP-UX 11i v2 and v1 servers to the Dell Compellent Storage Center, Legacy mode must

be configured on the Storage Center; due to the device addressing scheme on HP-UX 11i v2 and v1

servers, NPIV mode on the Storage Center SHOULD NOT be used (also see Note below). In addition to

the Legacy mode, the Fibre Channel switch that the Storage Center is plugged into must have port

binding to WWN feature. For example, Cisco switches have Persistent FCID while Brocade switches

have Persistent PID. Please refer to Dell Compellent CSTA for more details.

NPIV functionality is dependent upon the hardware and HBAs ability to understand the NPIV

protocol. As of this paper, NPIV is supported on newer 8GB PCIe FC HBAs and HP

BladeSystem c-Class blades ONLY.

When creating LUNs on the Dell Compellent Storage Center, the LUNs can only be mapped to a HP-UX

server through one controller or the other but not through both at the same time. When this controller

fails, the LUNs will automatically move to the second controller. This is the reason why port binding to

WWN feature on the switch is required in order for the HP-UX server to maintain the same disk device

files after the failover or failback.

HP-UX 11i v2 and v1 Server Path Failover

HP-UX 11i v2 and v1 uses PVLinks via Logical Volume Manager (LVM) as a way to handle server path

failover. When creating LUNs on the Dell Compellent Storage Center, the LUNs must be mapped to

both HBA ports on the target host.

Server Setup

In a dual/zone fabric, zone each host HBA via separate zones to the same four (4) Front End Primary

(FEP) and four (4) Front End Reserve (FER) ports/domains.

If you need to determine the World Wide Port Names (WWPNs) of your host FC HBAs, then issue the

following command.

Type: ls –la /dev/*d* | grep –e td –e fcd | awk ‘{print $10}’

/dev/fcd0

/dev/td1

Type: /opt/fcms/bin/fcmsutil /dev/td1 | grep Port

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Seagate ST318404LC User's Guide Page 11