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hp StorageWorks
modular SAN array 1000
specific for Tru64 UNIX and OpenVMS only
DA-11621 Canada — Version 2 — April 15, 2003 4
MSA1000 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” Universal hot pluggable Ultra2, Ultra3, and/or Ultra320 drives. Each
msa1000 includes the following standard components: (1) msa1000 Controller, (1) msa Fibre Channel I/O Module
with a single SFP, dual hot pluggable fans/power supplies and power cables, (2) 3’ VHDCI to VHDCI SCSI cables
to connect expansion enclosures, documentation and a CD Kit containing firmware upgrade code for Tru64 and
OpenVMS and a support software CD.
The modular design of the msa1000 makes it possible to add redundant controllers, redundant single port Fibre
Channel I/O Modules, 3-port hub, or msa SAN switch 2/8 and storage expansion enclosures.
msa1000 Controller
The msa1000 Controller is an integrated RAID controller with an integrated LCD/LED status display and 256 MB
read/write battery-backed cache (expandable to 512 MB per controller). One msa1000 Controller is included with
the msa1000; a redundant msa1000Controller is an option.
Key Features
• Redundant controller support with mirrored cache
• Fabric, Private Loop & Public Loop Support
• Auto Negotiated F, FL & L Port Login
• RAID 0, 1, 1+0, 5 and ADG
• 2 Gb/1 Gb Frequency Agile
• Primary & Secondary Inter-Controller Link (ICL)
• configurable with Command Line Interface (CLI)
msa1000 Controller
Management Features
• 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.
• 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 two
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
• Online Spares: If a failure occurs, recovery begins with an online spare and
data is reconstructed automatically. Multiple online spares can be
assigned per array and used across multiple arrays. It is also possible to
assign different online 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
msa Fibre Channel I/O Module
Provides a single 2 Gb Fibre Channel connection per controller from the host side into the msa1000. The msa
Fibre Channel I/O Module includes one 2 Gb, Short Wave, Small-Form-Factor-Pluggable Transceiver (SFP). A
second msa Fibre Channel I/O Module can be installed for redundancy when a redundant controller is used.