HP VMA-series Memory Arrays Manual do Utilizador descarregar pdf (Página 118)

Chapter 7 - Linux Drivers

118

VMA-series Memory Array Installation and Service Guide

HP-AM456-9002A Rev 01

Linux Drivers Overview

In a direct-attached configuration, the Linux driver enables the host (a Linux

machine) to access block storage on a Memory Array.

The Linux driver (

vtms-linux-driver) must be installed on the host machine

if the Memory Array is to be directly attached to a Linux host. If the Memory

Array is to be directly attached to a Windows host, see Windows Drivers on page

135.

Understanding Linux Driver Types

Linux drivers may be implemented as one of three different device types:

character devices, block devices, or SCSI devices. The Memory Array system

supports only one device type at a time.

The Linux driver accesses the system as any of the following device types:

In general, a Linux driver provides block device access to the Memory Array

enabling the host to create and mount block storage.

This chapter describes the steps required to install and configure Linux drivers

as block devices only. If you plan to use the Linux driver to enable character or

SCSI connections, contact HP Customer Support.

Installation and Configuration Overview

The Linux driver enables a direct-attached connection between a Memory Array

and a Linux host machine.

During Phase 3 of the Memory Array deployment, you may choose to configure

the system for block storage or direct-attached storage. If you choose direct-

attached configuration, you must install the appropriate device driver (Linux or

Windows) and the Violin Utilities on the host machine.

Character

Reference design for raw access to the Memory Array.

Block

The default and preferred driver mode. Allows for file

system creation, mounting, and optional host buffer

cache usage.

SCSI

Provides SCSI disk devices for certain applications that

expect

/dev/sd* devices. Performance will be slower

than block mode due to SCSI emulation.

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HP VMA-series Memory Arrays Manual do Utilizador Página 118