Editorial Technical Reference

Drive Array

This page explains how Drive Array is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A collection of multiple storage drives organized and managed as a single logical unit within a storage system.

Product Specifications

Technical details and manufacturing context for Drive Array

Definition
A drive array is a critical component of a storage node that groups multiple physical storage drives (such as HDDs or SSDs) together to function as a unified storage resource. It provides enhanced performance, capacity, and reliability through technologies like RAID (Redundant Array of Independent Disks), enabling features such as data striping, mirroring, and parity protection. The array is typically housed in an enclosure that supports hot-swapping of drives, allowing for maintenance without system downtime. It is managed by a storage controller, which presents the array as a single logical volume to the host system. Drive arrays are used in various applications, from enterprise data centers to network-attached storage (NAS) devices, where data availability and integrity are paramount. The configuration of a drive array involves selecting the appropriate RAID level, which determines how data is distributed across the drives, balancing performance, capacity, and redundancy. Common RAID levels include 0, 1, 5, 6, and 10, each offering different trade-offs. The array's capacity and performance depend on the number and type of drives installed, as well as the controller's capabilities. Drive arrays also incorporate features such as cache memory to improve read/write performance, and they support various interface standards like SAS and SATA. Environmental considerations, such as operating temperature and humidity, are important for reliable operation. The physical dimensions and weight of the array enclosure are specified for rack mounting and installation planning. When selecting a drive array, it is essential to verify model-specific parameters, such as maximum capacity, data transfer rates, and power consumption, with the manufacturer, as these can vary based on the configuration and components used.
Working Principle
The drive array operates by distributing data across multiple physical drives according to a specific RAID configuration. A storage controller manages the array, handling data read/write operations, error correction, and drive synchronization. This allows the array to appear as a single, high-performance storage volume to the host system while providing redundancy and fault tolerance. The controller uses cache memory to accelerate access to frequently used data, and it monitors drive health to predict failures. In the event of a drive failure, the array can rebuild the lost data from parity or mirrored information, depending on the RAID level. The array's performance is influenced by the number of drives, the interface speed, and the RAID algorithm. The controller also manages hot-swapping of drives, allowing for replacement without interrupting operations.
Common Materials
Aluminum alloy, Steel, Plastic polymers, Electronic components (PCBs, chips)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Number of Drives4–24Depends on enclosure size and RAID level
Maximum Capacity8–192 TBBased on current drive densities
RAID Levels0,1,5,6,10Selectable per logical volume
Data Transfer Rate6–12 Gbit/sPer port, SAS or SATA
Cache Memory1–8 GBWrite-back cache with battery backup
Operating Temperature0–55 °CAmbient, non-condensing
Storage Temperature-40–70 °CNon-operational
Relative Humidity10–90 %Non-condensing
Input Voltage100–240 V ACAuto-ranging, 50/60 Hz
Power Consumption150–600 WDepends on drive count and activity
Mean Time Between Failures1000000–2000000 hFor the array controller
Dimensions (Width x Height x Depth)445 x 87 x 550 mm19-inch rack mount, 2U height
Weight10–25 kgWithout drives
Ingress ProtectionIP20–IP40For indoor useIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Storage Controller
    Manages data distribution, RAID operations, and communication between drives and host system
    Material: Electronic components (PCB, chips, capacitors)
  • Drive Bays/Enclosures
    Physical housing and mounting system for individual storage drives
    Material: Aluminum alloy, steel
  • Backplane
    Circuit board that provides electrical connections between drives and controller
    Material: PCB, copper connectors
  • Cooling System
    Maintains optimal operating temperature for drives and electronics
    Material: Aluminum heatsinks, plastic fan blades
  • Power Distribution
    Provides regulated power to all drives and components in the array
    Material: Copper wiring, power connectors, voltage regulators
  • Storage Drives
    The physical drives whose capacity the array aggregates into one logical volume.
  • Cache Memory
    Accelerates access to frequently used data in the array.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Drive Array.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
altitude: 0 to 3,000 meters
humidity: 5% to 85% non-condensing
pressure: Atmospheric pressure only, not pressure-rated
vibration: ≤ 0.5 G RMS (operational), ≤ 2.0 G RMS (non-operational)
temperature: 0°C to 40°C (operational), -40°C to 70°C (storage)
Media Compatibility
✓ Data center environments ✓ Enterprise server racks ✓ Cloud storage infrastructure
Unsuitable: Outdoor or uncontrolled environments with dust, moisture, or temperature extremes
Sizing Data Required
  • Total storage capacity required (TB)
  • Performance requirements (IOPS/throughput)
  • Redundancy level (RAID configuration)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading beyond design limits, improper lubrication leading to metal-to-metal contact, or contamination ingress causing surface degradation and spalling.
Shaft misalignment-induced wear
Cause: Incorrect installation, thermal expansion mismatches, foundation settling, or coupling wear leading to excessive vibration, uneven load distribution, and accelerated component degradation.
Maintenance Indicators
  • Abnormal high-frequency vibration or audible grinding/clicking noises during operation
  • Visible oil leaks around seals or couplings, or discoloration/overheating of housing surfaces
Engineering Tips
  • Implement precision laser alignment during installation and re-alignment after major maintenance, with periodic checks using vibration analysis to detect early misalignment trends.
  • Establish a condition-based lubrication program using oil analysis to monitor contamination and additive depletion, and ensure proper grease purging in bearings to prevent over/under-lubrication.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 1940-1:2003 (Mechanical vibration - Balance quality requirements for rotors in a constant (rigid) state) ANSI/AGMA 2000-A88 (Gear Classification and Inspection Handbook - Tolerances and Measuring Methods for Unassembled Spur and Helical Gears) DIN 3962-1:1978 (Tolerances for cylindrical gear teeth; principles)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter tolerance: H7 (e.g., +/-0.018mm for 50mm bore)
  • Tooth profile tolerance: Class 7 per AGMA 2000-A88 (e.g., total composite error < 0.05mm)
Quality Inspection
  • Hardness testing (Rockwell C scale) to verify heat treatment specifications
  • Coordinate Measuring Machine (CMM) inspection for dimensional accuracy and geometric tolerances

Manufacturers of Drive Array

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Frequently Asked Questions

What is a drive array?

A drive array is a component that combines multiple physical storage drives into a single logical unit, managed by a controller. It uses RAID technology to provide performance, capacity, and redundancy.

What RAID levels are supported?

Common RAID levels include 0, 1, 5, 6, and 10. Each offers different trade-offs between performance, capacity, and fault tolerance. The specific levels supported depend on the controller and configuration.

How do I verify the specifications of a drive array?

Always check the manufacturer's datasheet or technical documentation for model-specific values such as maximum capacity, data transfer rate, power consumption, and environmental limits. These can vary based on the drives and configuration.

What are the maintenance signals for a drive array?

Monitor the array for drive failures, degraded performance, or error logs. The controller may provide alerts for predictive failures. Regular firmware updates and drive health checks are recommended.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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