QuickSpecs
hp StorageWorks Modular SAN Array 1000
DA-11033 World Wide — Version 5 — September 17, 2002 4
MSA1000 COMPONENTS
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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 or 512 MB per controller). One msa1000 Controller is included with the msa1000; the redundant msa1000 Controller 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)
• 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
• OnLine 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.
MSA Fibre Channel I/O Module
Provides a single 2 Gb Fibre Channel connection 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.
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