0B20915 - Hitachi 0B20915 147GB 15000RPM SAS 3Gb/s Hard Drive

Name: Hitachi 0B20915 147GB 15000RPM SAS 3Gb/s Hard Drive
Brand: Hitachi
SKU: 0B20915

0B20915 - Hitachi 0B20915 147GB 15000RPM SAS 3Gb/s Hard Drive | US IT Hardware

Product overview

The Hitachi Ultrastar 15K147 0B20915 is a 147GB enterprise-class hard drive designed for mission-critical datacenter environments. Operating at 15000RPM with a 3Gb/s SAS interface, this drive delivers average seek times of 3.3ms and average latency of 2ms, enabling rapid data access for high-performance computing workloads. The 16MB cache memory improves average read and write response times, while the 3.5-inch form factor integrates into standard server configurations. Supporting Ultra320 SCSI, 4GFC, 2GFC, and SAS connectivity options, the drive provides configuration flexibility across diverse enterprise systems. Rotational Vibration Safeguard technology maintains performance in multi-drive environments. Ideal for online transaction processing, data analysis, and multi-user applications requiring consistent, reliable performance.

15000RPM spindle speed with 3.3ms average seek time
SAS 3Gb/s interface with multi-protocol support options
16MB cache memory for optimized read and write performance
147GB capacity in standard 3.5-inch form factor
Rotational Vibration Safeguard for multi-drive environments
Self-diagnostics and early warning error detection

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Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	0B20915
Brand	Hitachi
Condition	New
Model	HUS151414VLS300
Series	15K147
Current	0.70A (5V), 1.70A (12V)
Capacity	147 GB
Features	Command Reordering Optimization, Rotational Position Optimization, Rotational Vibration Safeguard (RVS), Antiferromagnetically-coupled (AFC) Media
Cache Size	16 MB
Error Rate	10 in 10E16
S.M.A.R.T.	Supported

Compatible systems

Confirmed compatible with Dell PowerEdge servers and PowerVault MD1000

Dell PowerEdge
Model: 1900, 1950, 2900, 2950, 6900, 6950
All SAS compatible servers including Dell PowerEdge from disctech.com
Dell PowerVault
Model: MD1000
Confirmed compatibility from disctech.com

Best for

Online Transaction Processing
The 15000RPM spindle speed and 3.3ms average seek time enable rapid transaction execution. The 3Gb/s SAS interface supports high-frequency I/O operations required for OLTP workloads.
Data Analysis and Reporting
16MB cache memory and 2ms average latency optimize sequential and random read performance for analytical queries. The drive delivers up to 33 percent more I/Os per second than 10000RPM alternatives.
Multi-User Enterprise Applications
Rotational Vibration Safeguard technology maintains consistent performance in multi-drive server configurations. The 147GB capacity supports shared storage for concurrent user access.
Mission-Critical 24x7 Computing
Enterprise-grade reliability and mature design enable continuous operation in demanding datacenter environments. Self-diagnostics and early warning error detection support proactive maintenance.

Details

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15K RPM SAS Hard Drives Enterprise SAS Hard Drives 3.5-inch (LFF) Server Hard Drives 15K RPM Enterprise Hard Drives

Form Factor	3.5-inch

Product Line	Ultrastar

Product Type	Hard Disk Drive

Number of Discs	5

Rotational Speed	15,000 RPM

Start/Stop Cycles	50000

Nonrecoverable Read Errors	1 per 10^15 bits read

MTBF	2 million hours
Average Latency	2.00 msec
Average Seek Time	3.7 ms
Media Transfer Rate	1129 Mbits/sec
External Transfer Rate	425 MB/sec
Internal Transfer Rate	1129 Mbits/sec

Voltage	+5VDC (+-5%), +12 VDC (+-5%)

Interface	SAS-1 3Gbps
Drive Interface	SAS 3Gb/s

Frequently asked questions

What is the average seek time and latency of the Ultrastar 15K147?

The Ultrastar 15K147 delivers average seek times of 3.3ms and average latency of 2ms. These performance metrics enable rapid data access for transaction processing and analytical workloads. The combination of high rotational speed and optimized latency provides approximately 33 percent more I/Os per second compared to 10000RPM drives.

What interface options are available for the 0B20915 model?

The 0B20915 is configured with a Serial Attached SCSI (SAS) interface operating at 3Gb/s. The broader Ultrastar 15K147 family also supports Ultra320 SCSI, 4Gb/s Fibre Channel, and 2Gb/s Fibre Channel interfaces, providing configuration flexibility across enterprise storage architectures.

What is the cache size and how does it improve performance?

The drive features 16MB of cache memory that significantly improves average read and write response times. The cache buffers frequently accessed data, reducing the number of physical disk rotations required to satisfy I/O requests and lowering overall latency for mixed workload patterns.

Is the Ultrastar 15K147 suitable for multi-drive server configurations?

Yes. The drive incorporates Rotational Vibration Safeguard (RVS) technology specifically designed to maintain performance in multi-drive systems. This feature minimizes vibration-induced performance degradation when multiple drives operate simultaneously in server arrays.

What storage capacity options are available in the Ultrastar 15K147 family?

The Ultrastar 15K147 family offers three capacity options: 147GB, 73GB, and 36GB. The 0B20915 model provides the maximum 147GB capacity, enabling substantial per-drive storage for enterprise applications while maintaining the performance characteristics of the 15000RPM platform.

What diagnostic and monitoring capabilities does this drive include?

The Ultrastar 15K147 incorporates self-diagnostics and early warning error detection capabilities. These features enable proactive identification of potential issues, supporting preventive maintenance strategies in mission-critical 24x7 computing environments.

Hitachi 0B20915 147GB 15000RPM SAS 3Gb/s Hard Drive

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Performance

Power Consumption

Networking Ports & Interfaces

Frequently asked questions

Hitachi 0B20915 147GB 15000RPM SAS 3Gb/s Hard Drive

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Shop these collections

Performance

Power Consumption

Networking Ports & Interfaces

Frequently asked questions