Constellation Hard Drive

X

Bulk data storage in a small footprint.

The Seagate® Constellation.2™ drive is the only 2.5-inch enterprise-class hard drive delivering both 1TB capacities and enterprise reliability at the industry’s lowest power consumption for storage-hungry nearline applications. Self-Encrypting Drive (SED) and FIPS 140-2 Validated™ SED security options available to help you protect your data.1

  • Maximizes data center footprint with up to 76TB per square foot
  • Energy efficient storage at under 3.9 watts (idle)
  • Highest nearline reliability with an MTBF of 1.4M hours
  • 6Gb/s performance in both SAS and SATA interfaces
Compare all models

Constellation Overview Piggy bank icon

Unparalleled power savings.

Constellation.2 hard drives reduce per-gigabyte cooling and energy costs by packing high capacities into an SFF, low-power-consumption drive.

Included Seagate® PowerChoice™ technology can further reduce energy costs by empowering IT organizations to tailor systems for optimal performance and power consumption.

More Constellation.2 features
Constellation Overview Disc drive with internet icon

Big storage for small spaces.

Constellation.2 hard drives can help you deploy additional enterprise storage without expanding your data center.

With its 15mm z-height, the 1TB model is the first 2.5-inch hard drive capacity-optimized for dense, space-constrained data centers. This model can help you store twice as much data in the same footprint, supporting up to 76TB of storage per square foot.

More Constellation.2 features
drive-w-fips-icons-316x309

Secure self-encryption.

Constellation.2 hard drives are available as Self-Encrypting Drive models. SED options can improve data-at-rest security and reduce drive retirement costs.

Meets regulatory data security compliance requirements and is FIPS 140-2 Validated™ to protect Sensitive but Unclassified and Protected class data.1

Learn more

Tech Insight

Why Nearline SAS Drives Are Entering the Capacity-Optimized Drive Market

Capacity-optimized hard drives are in demand

More

Features

Constellation Feature On + leaf = piggy bank icons

Saves energy and money.

Constellation.2™ hard drives deliver the lowest power consumption in the industry.These hard drives also operate at just 3.9W when idle;which can be further reduced to an astounding 1.1W with enhanced PowerChoice™ technology options.

Purpose-built for enterprise environments, PowerChoice is based on the T10-compliant power management standard.This technology enables you to tailor the Constellation.2 hard drive’s settings for optimal performance and energy usage. The result: power savings of up to 54% over traditional 3.5–inch drives.

Simply put,Constellation.2 hard drives deliver the lowest power usage ever offered in an enterprise-class nearline drive–without any performance degradation.

Constellation Feature Tools icon

Builds better solutions.

System integrators and IT professionals can leverage Constellation.2 hard drive features like these to build optimal data storage solutions:

  • Enterprise-class firmware and best-in-class rotational vibration tolerance maximize system availability and performance in multi-drive systems
  • Choose 6Gb/s SAS for improved data integrity, scalability over long distances and fastest data access
  • The SATA 6Gb/s interface is ideal for fast, economical nearline (Tier2) performance
int-es-2.5-constellation-.2-features-3-316x280.png

Self-encryption for optimal ROI.

The TCG-compliant, Self-Encrypting Drive1 option keeps data secure where it lives: on the hard drive.

Moreover, Seagate Instant SecureErase™ technology renders all data on the SED unreadable in less than a second. This feature eliminates the need to overwrite or physically destroy drives, allowing organizations to securely return, repurpose or sell their hard drives.


1Self-Encrypting Drives (SED) and FIPS 140-2 Validated drives are not available in all models or countries. May require TCG-compliant host or controller support. 

Resources

Specifications

constellation.2 fal prod spec
 
Capacity 1TB 500GB 250GB
Show me :
Form Factor 2.5" 2.5" 2.5"
Interface Options SATA 6Gb/s, SAS 6Gb/s SAS 6Gb/s, SATA 6Gb/s SATA 6Gb/s
Performance      
Spindle Speed (RPM) 7200 7200 7200
Cache (MB) 64 64 64
Transfer Rate, Max Ext (MB/s) 600 600 600
Sustained Data Rate OD 115Mb/s 115Mb/s 115Mb/s
Average Latency (ms) 4.16 4.16 4.16
Reliability/Data Integrity      
Nonrecoverable Read Errors per Bits Read 1 in 1015 1 in 1015 1 in 1015
Annualized Failure Rate (AFR) 0.62% 0.62% 0.62%
Power Management      
Idle, Typical Operating (W) 2.95, 3.84 3.19, 2.44 2.25
Environmental      
Temperature      
Operating 5° to 60°C 5° to 60°C 5° to 60°C
Non-operating -40° to 70°C -40° to 70°C -40° to 70°C
Shock      
Operating: Gs (ms) 70 / 40 (2ms), 25 (2ms) 25 (2ms), 70 / 40 (2ms) 70 / 40 (2ms)
Non-operating: Gs (ms) 400 (2ms) 400 (2ms) 400 (2ms)
Acoustics (bels - sound power)      
Idle 2.2 2.2 2.2
Operating 2.8 2.8 2.8
Physical      
Height (in/mm) (maximum) 0.591/15.00 0.591/15.00 0.591/15.00
Width (in/mm) (maximum) 2.760/70.10 2.760/70.10 2.760/70.10
Length (in/mm) (maximum) 3.955/100.45 3.955/100.45 3.955/100.45
Weight (lb/g) 0.441/200, 0.440/200 0.400/183, 0.403/183 0.395/179
Model Number Generation Capacity Interface Spindle Speed (RPM) Cache (MB) Encryption Storage Type Areal Density Maximum Operating Shock Maximum Length Maximum Width Maximum Height Typical Weight AFR Operating Temperature Average Operating Power
ST91000640NS Constellation.2 1TB SATA 6Gb/s 7200RPM 64MB   HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 5.43W
ST91000642NS Constellation.2 1TB SATA 6Gb/s 7200RPM 64MB Encryption/FIPS HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 5.43W
ST91000640SS Constellation.2 1TB SAS 6Gb/s 7200RPM 64MB   HDD 417 25Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 6.35W
ST91000641SS Constellation.2 1TB SAS 6Gb/s 7200RPM 64MB Encryption HDD 417 25Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 6.35W
ST91000641NS Constellation.2 1TB SATA 6Gb/s 7200RPM 64MB Encryption HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 5.43W
ST91000642SS Constellation.2 1TB SAS 6Gb/s 7200RPM 64MB Encryption/FIPS HDD 417 25Gs 100.45mm 70.10mm 15.00mm 200g 0.62% 60°C 6.35W
ST9500622NS Constellation.2 500GB SATA 6Gb/s 7200RPM 64MB Encryption/FIPS HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 4.73W
ST9500622SS Constellation.2 500GB SAS 6Gb/s 7200RPM 64MB Encryption/FIPS HDD 417 25Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 5.48W
ST9500621SS Constellation.2 500GB SAS 6Gb/s 7200RPM 64MB Encryption HDD 417 25Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 5.48W
ST9500620SS Constellation.2 500GB SAS 6Gb/s 7200RPM 64MB   HDD 417 25Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 5.48W
ST9500621NS Constellation.2 500GB SATA 6Gb/s 7200RPM 64MB Encryption HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 4.73W
ST9500620NS Constellation.2 500GB SATA 6Gb/s 7200RPM 64MB   HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 183g 0.62% 60°C 4.73W
ST9250611NS Constellation.2 250GB SATA 6Gb/s 7200RPM 64MB Encryption HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 179g 0.62% 60°C 4.61W
ST9250612NS Constellation.2 250GB SATA 6Gb/s 7200RPM 64MB Encryption/FIPS HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 179g 0.62% 60°C 4.61W
ST9250610NS Constellation.2 250GB SATA 6Gb/s 7200RPM 64MB   HDD 417 70 / 40Gs 100.45mm 70.10mm 15.00mm 179g 0.62% 60°C 4.61W