beautypg.com

Types of supported devices, Shared storage enclosures – HP 3Gb SAS Switch for HP BladeSystem c-Class User Manual

Page 8

background image

Types of supported devices

The 3Gb SAS BL Switch supports the following types of devices:

Shared storage enclosures

, page 8

Zoned storage enclosures

, page 9

Tape devices

, page 9

As shown in the following table, configuration (zoning) procedures are the same for shared SAS
storage enclosures and tape devices, but differ for zoned SAS storage enclosures:

Zoning type

Quantity in

nl

dual-domain

nl

environments

Quantity in

nl

single-domain

nl

environments

Component

16/32

16/32

Servers

2/4

1/2

3Gb SAS BL Switches

1

1

P700m SAS mezzanine cards per server

Switch port

2

1

MSA2000sa controllers

nl

(Shared SAS storage enclosures)

Drive bay

2 per drawer, 4 per

nl

enclosure

1 per drawer, 2 per

nl

enclosure

MDS600 I/O modules

nl

(Zoned SAS storage enclosures)

Switch port

2 drives per switch

2 drives per switch

1/8 G2 Tape Autoloaders and MSL SAS
Tape Libraries (Tape devices)

included

Dual-port SAS disk drives

included

Single-port SATA disk drives

For information about cabling and configuring the switch and any attached devices, see

Cabling the

switch

, page 17.

Shared storage enclosures

When shared storage enclosures are attached to the switch:

The storage enclosure includes an embedded RAID array controller, which is used to configure
the logical storage units (LUNs). An example of a shared SAS storage enclosure is the MSA2000sa.

The BladeSystem server blade must have a RAID array controller installed, which communicates
with the RAID array controller in the storage enclosure, but it is not used for its RAID configuration
capabilities.

The switch is configured using switch-port zone groups. The entire storage enclosure connected
to that switch port is visible to all server bays granted access to the zone group that includes that
switch port.

NOTE:

Unused switch ports can be included in a zone group, to help plan for future growth.

Introduction

8