IBM DS5020 Chapter 1. Introduction

Chapter 1. Introduction

This chapter describes the operating specifications, features, and components for

the IBM System Storage DS5020 Storage Subsystem (hereafter referred to as

DS5020 or storage subsystem).

This chapter also includes an inventory checklist and important information about

best practices guidelines and product updates for your DS5020.

The IBM System Storage DS5020 storage subsystem (Machine Type 1814-20A) is

designed to provide solutions to meet the needs of midrange/departmental storage

requirements, delivering high performance, advanced function, high availability,

modular and scalable storage capacity, with SAN-attached 8 Gbps Fibre Channel

(FC) and 1 Gbps iSCSI connectivity, and support for RAID levels 0, 1, 3, 5, and 6

up to over 49 terabytes (TB) when using 450 GB Fibre Channel hard drives and up

to 112TB when using 1 TB Serial Advanced Technology Attachment (SATA)

Enhanced Disk Drive Modules (E-DDMs).

A 3U rack-mountable enclosure houses the DS5020 redundant, dual-active RAID

controllers with either four Fibre Channel ports, four Fibre Channel ports, or two

Fibre Channel and two iSCSI ports per controller. The DS5020 can be configured

for the attachment of host servers and EXP520 and EXP810 storage expansion

enclosures and up to 16 4 Gbps Fibre Channel or SATAE-DDMs. The base

DS5020 storage subsystem controllers each have four Fibre Channel ports.

The DS5020 supports the attachment of up to six EXP520 and EXP810 storage

expansion enclosures, resulting in the capability to connect up to 112 E-DDMs and

enabling storage configurations of over 49 TB using 450 GB Fibre Channel E-DDMs

or 112TB using 1 TB SATA E-DDMs.

The base DS5020 storage subsystem supports up to 32 drives, which includes 16

drives in the DS5020 chassis and 16 more drives in an attached storage expansion

enclosure. Toattach more than 32 drives, you much purchase the applicable

feature option.

Toattach additional drives to the DS5020, you can use EXP520 or EXP810 storage

expansion enclosures. Youcan connect EXP520 storage expansion enclosures to

the DS5020 without purchasing feature options. Toattach an EXP810 storage

expansion enclosure or enclosures to the DS5020, you must purchase the Attach

EXP810 to DS5020 Activation feature option. Contact your IBM marketing

representative or IBM reseller for more information.

Toconnect 33 - 64 drives in one DS5020 and three EXP520 storage expansion

enclosures, you must purchase the DS5020 Drive Attach 33 - 64 feature option. If

you need to connect 65 - 112 drives in a DS5020 configuration, you must purchase

the DS5020 Drive Attach 65- 112feature option in addition to the DS5020 Drive

Attach 33 - 64 feature option. These two feature options enable you to attach the

additional drives in one DS5020 and six EXP520 storage expansion enclosures.

Contact your IBM marketing representative or IBM reseller for more information.

The DS5020 supports configurations of FC disks with or without Full Disk

Encryption (FDE), or SATAdisks, or a mix of disk drives. To install FDE disks in a

DS5020, you must purchase the Full Disk Encryption option. Advanced DS5020