Model 10 and Model 20

Product photograph of Model 10 and model 20 can be seen in the original document.

The High Availability Disk
Arrays Model 10 and Model 20 are industry-leading storage solutions for mission-critical computing environments. Based on an innovative architectural design which emphasizes high availability, both models optimize performance and reliability while affording functionality to meet the storage needs of the enterprise. The 42 GB Model 10 and 84 GB Model 20 offer a range of capacity points yet share a rich set of common features.

High Availability to
Ensure Data Access

Configuration Flexibility and Ease of Management

• Hardware implementation to optimize performance
• RAID 0, 1, 1/0, and 5 address different availability and performance needs
• Dual-active storage controllers offering automatic failover significantly improve data availability
• Multiple RAID levels supported in the same configuration for maximum flexibility
• User-configurable disk rebuild rate to minimize the impact on I/O performance
• Array configuration easily managed through software emulation on an HP-UX system window via an RS-232 connection1
• Configuration on HP-UX 10.0 managed directly through SAM

High Availability Optimization

• Redundant components to eliminate single points of failure: controllers, disks, power supplies, and fans
• Convenient on-line maintenance allows hot repair of drives, storage controllers, power supplies, and fans
• Global hot spare capability provides automatic, unattended disk rebuild, which is more economical than the conventional 'dedicated' spare drive approach
• Write-cache is mirrored and protected by a battery backup unit to ensure data integrity in the event of a power failure

High Performance
Components to Provide Industry-Leading I/O Performance

• Dual-active storage controllers afford dual Fast/Wide SCSI links to a single host2 or multiple hosts
• High performance, 7200 RPM, 2.1 and 4.2 GB disk modules
• Up to 64 MB write-cache (16 MB for Model 10) optimizes RAID 5 write performance

Flexible Expansion Path

• Up to 10 or 20 drives configurable in deskside or rackmount enclosures
• Up to three disk arrays per 1.6 meter 19" EIA rack or two per 1.1 meter 19" EIA cabinet
• Up to fifteen disk arrays per single host Fast/Wide SCSI bus (four [4] recommended for optimal performance)

Platform and O/S Support

• HP-UX 9.04 rev. A.B9.04.3B and A.B9.04.4A for 8x7/E/F/G/H/I/T/890 class servers -Supported as data disks only with HP-UX 9.04 PCO 3B; boot disk with HP-UX 9.04 PCO 4A
• HP-UX 10.0 for 8x7/E/F/G/H/I/K/T/890 class servers -HP-PB boot support for HP-UX 10.0 release. HSC boot support with HP-UX 10.01 General Business Release (single host only)
• HP-UX 10.01 for HP 9000 Series 700 workstations

2 Diagrams of Model 10 and 20 hardware architecture can be seen in the original document.

Specifications

Product Numbers

• A3231A & A3388A-Model 10 High Availability Disk Array
• A3232A & A3389A-Model 20 High Availability Disk Array

Performance/Throughput

• Host Interface: 16-bit SCSI-2 20 MB/sec (wide and differential)
• Drive bus: 8-bit SCSI-2 10 MB/sec (single-ended). 5 buses for Model 20; 2 buses for Model 10
• RAID 5 Performance: (5 drives) -Sequential Read 4.75 MB/sec; Sequential Write 1.20 MB/sec -Random Read 315 I/O per sec; Random Write 90 I/O per sec

Array Chassis

• Capacity: -Model 10-10 drives with up to 42 GB (with 4.2 GB disks) -Model 20-20 drives with up to 84 GB (with 4.2 GB disks)
• Storage Controller: 25 MHz AMD 29000-based; with up to 16 MB write-cache for Model 10 or 64 MB write-cache for Model 20 (Minimum configuration for cache: 5 disk drives for Model 10 and Model 20, 2 storage controllers and 1 battery backup unit)

Dimensions
Model 10

• Deskside Cabinet: -Height-24.75 in. (62.9 cm) -Width-10.5 in. (26.7 cm) -Depth-30 in. (76.2 cm) -Weight-156 lb (70.2 kg)
• Rackmount enclosure: -Height-10.5 in. (26.7 cm) -Width-19 in. (48.3 cm) -Depth-30 in. (76.2 cm) -Weight-140 lb (63 kg) Model 20
• Deskside Cabinet: -Height-24.75 in. (62.9 cm) -Width-14 in. (35.6 cm) -Depth-30 in. (76.2 cm) -Weight-186.4 lb (83.9 kg)
• Rackmount enclosure: -Height-14 in. (35.6 cm) -Width-19 in. (48.3 cm) -Depth-30 in. (76.2 cm) -Weight-173.2 lb (78 kg) Drive
• Capacity: 2.1 GB and 4.2 GB formatted
• Rotational Velocity: 7200 RPM
• Transfer Rate: -Asynchronous Burst: 5 MB/sec -Synchronous burst: up to 10 MB/sec
• Average seek time: 8.9 ms
• MTBF: 800,000 hours AC Power
• Input Requirements: 90-264 VAC, single-phase input, 47-63 auto selecting, 4.5 A or 9.0 A max. @ 100V input
• VA Rating: 450 VA or 900 VA max.
• Input Watts: 475 W or 880 W
• Power Factor: .95 (min. @ full power)
• Heat Dissipation: 3000 BTU/hr max.
• Inrush Current: 60 A max. for 1/2 line cycle @ 240 VAC
• AC Inlet: C 22 appliance coupler
• AC Protection: circuit breaker, 8A

Operating Environment

• Temperature: 50-100.4 F (10-38 C)
• Temperature Gradient: 10 C/hr
• Relative Humidity: 20-80% (noncondensing)
• Elevation: 8000 ft (2438.4 m)
• Shock: 3G @11 ms. 1/2 sin pulse
• Vibration: .25 G @ 5-2000 Hz

Safety and Emissions

• FCC Class A
• VDE Class A
• U.L. 1950
• CSA C22.2-950
• ENG0950

Quality

• Manufactured under an ISO 9000-certified facility

Standard Accessories

• Two RS-232 communication cables, one SCSI terminator, and documentation

For more information, contact any of our world wide sales offices or HP Channel Partners (In the U.S., call 1-800-637-7740; in Canada, call 1-800-387-3867). Look for HP on the World Wide Web (http://www.hp.com).

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