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Ultrastar Data 102

    • High Density - Up to 102 HGST HelioSeal® HDDs providing up to 1.2PB of raw storage in a 4U enclosure.
    • Flexible - Choice of SAS or SATA and up to 24 slots can be populated with SSDs for a data acceleration tier.
    • Innovative - Patented IsoVibe™ and ArcticFlow™ technologies improve performance and cooling.


Designed for Extreme Density

Conventional dense disk shelves frequently suffer from performance degradation due to induced vibration from adjacent drives. Traditional platforms also have cooling challenges as the cooling air passes over successive rows of drives, losing effectiveness as it gets heated up along the airflow path. Developing storage devices and platforms side-by-side, we address these challenges through vertical innovation, a set of technologies developed based on a holistic view of devices, platform, and their interactions. The first two of these patented technologies are IsoVibe™ and ArcticFlow™. IsoVibe reduces vibration-induced performance degradation, while ArcticFlow overcomes the cooling issues by introducing cool air into the middle of the platform. Both these technologies contribute to long-term reliability, enabling our five‑year limited warranty on the entire platform.


Host Connections

Dual redundant I/O Modules (IOM),

6 Mini-SAS HD ports per IOM

Available Capacities

HDD up to 12TB

SSD up to 6.4TB


SCSI Enclosure Services

Redfish (out of band, via RJ45)

Maximum Number of Drives

102 x 3.5” drive bays

Up to 24 can be SAS or SATA SSD

LED Indicator

Front/Rear: Power, ID, Fault

Drive: Activity, Fault

Serviceability Cable-free hot-swappable IOM, power supply, fans, and drives
Physical Size
Rack Size Height x Width x Depth mm (in) Height: 175mm (6.89”)Width: 447mm (17.61”)Depth: 1047mm (41.25”)
Weight kg (lbs) 4U102 w/o drives: 31.8kg (70lbs)4U102 w/ 102 HDDs: 118.8kg (262lbs)
Rack Space Requirements (rack units) Max of 1197mm (47.13”) w/ dual CMA—includes 24 SAS cables)
Power and Cooling: Operating
Cooling Fans 4 main enclosure fans, front-to-rear system cooling with zero-loss backflow prevention2 IO module fansDual PSUs with built-in fans
Environmental (operating)
Altitude (m) 40°C @ 3,000 ft
Operating Temperature 5 to 40°C
Non-Operating Temperature -40 to 60°C
Humidity 5 to 85% relative humidity
Sound Power < 7.2els @ 23+2°C

Quick Facts


    • Up to 102 Ultrastar® He12 HDDs (SAS or SATA)
    • Up to 1.2PB of raw storage in 4U
    • Dual-port SAS for high availability or single-port SATA for low cost
    • Hybrid support for up to 24 SSDs (SAS or SATA) to create a data acceleration tier
    • 4 rack units height, 1047mm depth (Check latest datasheet)
    • Up to 12 x 12Gb/s SAS3 host connections
    • Patented IsoVibe technology ensures maximum performance even in heavy workloads
    • Enterprise-grade redundant and hot-swappable PSUs, IO Modules and fans
    • Improved cooling from innovative, patented ArcticFlow technology
    • Rack-mounted top cover for quick and easy service

Application Environment

    • Dense server expansion
    • Software-defined storage
    • Private cloud
    • Big data analytics
    • Data tier for service provider
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