HP Smart Array 641

Consistent Configuration and Management Tools

Universal Hard Drive

• Compatibility with all Ultra 320, Ultra3 and Ultra2 LVD family products. In addition, a seamless upgrade to next generation HP high performance and high capacity mainstream Ultra320 Smart Array controllers.


• Recovery ROM protects against a ROM corruption.


• Ultra320 SCSI technology delivers high performance and data bandwidth up to 320-MB/s bandwidth per channel.


• Modular, easy-to-upgrade design lets you optimize performance as needed with the 64MB and 128MB BBWC Enabler, from 64-MB of memory for RAID and read cache to up to 128-MB of BBWC.


• Mix-and-match LVD SCSI compatibility protects your investments and lets you deploy drives as needed.


• Software consistency among all Smart Array family products: Array Configuration Utility Insight Manager (CIM), Array Diagnostic Utility (ADU) and SmartStart.


• 64-bit, 133-MHz PCI-X interface boosts bandwidth above 1B/s burst transfer rate over PCI-X bus.


• 64-bit memory addressing supports servers with greater than 4 GB of memory.


• 64-MB memory optimizes performance and data throughput.
  NOTE: 64 MB of DDR memory used for RAID and read cache.

• Online Capacity Expansion


• Online RAID Level Migration


• Online Stripe Size Migration


• Online Spares (Global)


• User Selectable Expand and Rebuild Priority

• Single Channel--Provides the ability to support up to 6 drives or 880.8GB

Key Features for 64MB BBWC (Battery-Backed Write Cache) Enabler

Key Features for 128-MB BBWC (Battery-Backed Write Cache) Enabler

Data Compatibility

Performance

HP's High Performance Architecture sets new boundaries of industry performance expectations!

• Wide Ultra320 SCSI (320 MB/s bandwidth) per channel


• High-performance 64-bit architecture


• 64-bit, 133-MHz PCI-X bus (1033 MB/s bandwidth)

Capacity

Given the internal server storage need for rapid capacity expansion, the SA-641 offers:

• Single SCSI channel support up to 6 internal disk drives


• Up to 880.8GB of storage per PCI slot

Availability

Provides increased server uptime by providing advanced storage functionality:

• Online RAID Level Migration (between any RAID level)


• Online Capacity Expansion


• Logical Drive Capacity Extension


• Global Online Spare


• Pre-Failure Warranty

Fault Prevention

The following features offer detection of possible failures before they occur, allowing preventive action to be taken:

• S.M.A.R.T.: Self Monitoring Analysis and Reporting Technology first developed at Compaq detects possible hard disk failure before it occurs, allowing replacement of the component before failure occurs.


• Drive Parameter Tracking monitors drive operational parameters, predicting failure and notifying the administrator.


• Dynamic Sector Repairing continually performs background surface scans on the hard disk drives during inactive periods and automatically remaps bad sectors, ensuring data integrity.


• Smart Array Cache Tracking monitors integrity of controller cache, allowing pre-failure preventative maintenance.


• Environment Tracking for External Storage System: Monitors fan speed and cabinet temperature of ProLiant Storage System and newer HP storage enclosures.

Fault Tolerance

Keeps data available and server running while a failed drive is being replaced; several fault tolerance configurations are supported including:

• Distributed Data Guarding (RAID 5): This allocates parity data across multiple drives and allows simultaneous write operations. It is recommended for up to 14 hard drives.


• Drive Mirroring (RAID 1, 1+0): This allocates half of the drive array to data and the other half to mirrored data, providing two copies of every file. It is a high-performance RAID.

Fault Recovery

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

• Recovery ROM: This new feature provides a unique redundancy feature that protects from a ROM image corruption. A new version of firmware can be flashed to the ROM while the controller maintains the last known working version of firmware. If the firmware becomes corrupt, the controller will revert back to the previous version of firmware and continue operating. This reduces the risk of flashing firmware to the controller.


• On-Line Spares: Up to two spare drives can be installed prior to drive failure. If a failure occurs, recovery begins with an On-Line Spare and data is reconstructed automatically.
  NOTE: On-Line Spares can only be used with RAID level 1, 1+0, and 5.

Consistency and Upgradability make the Smart Array family unique in the industry:

• GUI based configuration, management and diagnostic software tools


• Common data format between generations of products


• Data migration between servers and external storage enclosures


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