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Table 2.2 acp specifications, 3 array frame – Compaq 9900 User Manual

Page 34

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20 Chapter

2

Subsystem Architecture and Components

Table 2.2

ACP Specifications

Description

Specification for 9960

Specification for 9910

Number of ACP pairs

1, 2, 3 or 4

1

Backend paths per ACP pair

8

Backend paths per subsystem

8, 16, 24 or 32

8

Array group (or parity group) type per ACP pair

RAID-1 and/or RAID-5

Hard disk drive type per ACP pair

[1]

18 GB, 47 GB, 73 GB, 146 GB, 180 GB

[2]

Logical device emulation type within ACP pair

3380-x, 3390-x, and OPEN-x

[3]

Backend array interface type

Fibre-channel arbitrated loop (FC-AL)

Backend interface transfer rate (burst rate)

100 MB/sec (1 Gbps)

Maximum concurrent backend operations per ACP pair

8

Maximum concurrent backend operations per subsystem

32

8

HiStar Network architecture internal bandwidth

1.6 or 3.2 GB/sec

1.6 GB/sec

Notes:

1. All hard disk drives (HDDs) in an array group (also called parity group) must be the same type. Please contact your Hitachi

Data Systems representative for the latest information on available HDD types.

2. The 180-GB HDDs should not be intermixed with other HDD types in the same array domain (behind the same ACP pair).

See the notes under Table 2.3 for important information on 9900 subsystems which contain 180-GB HDDs.

3. 3390-3 and 3390-3R LVIs cannot be intermixed in the same 9900 subsystem.