Compaq NAS B3000 manual B3000 External Storage Components

QuickSpecs

StorageWorks NAS B3000 by Compaq

B3000 External Storage Components

With the following components, your storage capacity and performance can be scaled to new levels:

Modular SAN Array 1000

The 4U cabinet houses up to fourteen 1″ Compaq Universal hot pluggable Ultra2 and/or Ultra3 drives.

The modular design of the MSA1000 makes it possible to add redundant controllers, redundant single port Fibre Channel I/O Modules or Fabric Switches and storage expansion enclosures.

MSA1000 Controller

The MSA1000 Controller is an integrated RAID controller with an integrated LCD/LED status display and 128-MB read/write battery-backed cache (expandable to 256 MB per controller). Redundant MSA1000 controllers are an option.

Key Features

•Redundant controller support

•Fabric, Private Loop & Public Loop Support

•Auto Negotiated F, FL & L Port Login

•RAID 0, 1, 1+0, 5 and ADG

•2Gb/1Gb Frequency Agile

•Primary & Secondary Inter-Controller Link (ICL)

•Host based configuration via ACU

•Remote configuration and monitoring via ACU XE (offline and remote) & CIM XE

MSA1000 Controller Management Features

•Selective Storage Presentation: allows multiple hosts to access a single MSA1000 storage system. Host access can be defined all the way down to a logical volume level.

•Online RAID Level Migration: allows for online post-configuration change to RAID level without destroying data or volume information.

•Online Capacity Expansion: lets you add storage to an operational MSA1000 — reducing expensive server downtime.

•Online Volume Extension: allows for the capacity growth of existing logical volumes.

•Global Online Spare: reduces the risk of data loss by facilitating automatic rebuilds after a drive failure.

Fault Tolerance

Several fault tolerant configurations, which keep data available and servers running while drives are being replaced, are supported including:

•Advanced Data Guarding (RAID ADG): Allocates the equivalence of 2 parity drives across multiple drives and allows simultaneous write operations.

•Distributed Data Guarding (RAID 5): Allocates parity data across multiple drives and allows simultaneous write operations.

•Drive Mirroring (RAID 1, (1+0 Striped Mirroring)): Allocates half of the drive array to data and the other half to mirrored data, providing two copies of every file.

Fault Recovery

Minimizes downtime, reconstructs data, and facilitates a quick recovery from drive failure

•On-Line Spares: If a failure occurs, recovery begins with an on-line spare and data is reconstructed automatically. One on-line spare can be assigned per array and used across multiple arrays. It is also possible to assign different on-line spares across different arrays.

•Array Accelerator: Onboard, battery-backed cache memory protects data in the event of a power failure. In the unlikely event of a controller failure, the battery-backed cache will save critical user data for up to three days.

MSA1000 Fibre Channel I/O Module

The Fibre Channel I/O module provides a 2 Gb/s Fibre Channel connection from the host side into the MSA1000. The MSA1000 Fibre Channel I/O Module includes one 2 Gb/s, Short Wave, Small Form Factor Pluggable Transceiver (SFP). A second MSA1000 Fibre Channel I/O Module can be installed for redundancy when a redundant controller is used.

MSA Fabric Switch 6

The MSA1000 Fabric Switch 6 is a six port, 2 Gb/s Fibre Channel Fabric Switch. The MSA1000 Fabric Switch 6 replaces the standard single port Fibre Channel connection provided by the MSA1000 Fibre Channel I/O Module. There are a total of five external fibre channel ports. Four of the external fibre channel ports are Small Form Factor Fixed (SFF) short wave transceivers and are not removable. The fifth port requires the installation of a Small Form Factor Pluggable (SFP) transceiver. One port is used internally by the MSA1000 controller.

DA-11339 Canada — Version 7 — September 24, 2002 7