Elastic Infrastructure is Essential for Cloud and
Software-Defined Storage Environments
Elastic infrastructure powers databases, mission-critical applications, mobile apps,
collaboration, and IT infrastructure. Whether delivered by cloud service providers or
cloud-like software-defined storage solutions, elastic infrastructure requires storage
performance to enable the type of data services that help run enterprises or enable
personal productivity and leisure time.
Storage performance—intensive I/O operations at low response times—is key
to enabling transaction processing that is the basis of cloud-based e-commerce,
micropayments, in-app purchases, and on-premises software-defined storage to run
enterprise latency-sensitive workloads.
Cloud Economics Require Price/Performance
In order for XaaS cloud business models and software-defined storage solutions to
flourish, price/performance must be attainable. Though many varieties of proprietary,
high-performing storage solutions already exist, cloud service providers and software-
defined storage solutions, e.g., hyperconverged infrastructure, architect their systems
to maximize the utility of standard, commodity hardware. The ability to achieve
maximum performance, while achieving price/performance based on commodity
hardware is crucial for cloud delivery on an elastic infrastructure.
Ultrastar DC SA620 SATA SSDs Deliver Economics
to Cloud and Hyperscale Data Centers
To help enable elastic infrastructure for the cloud era, Western Digital offers a SATA SSD
with price/performance capability to enable cloud and software-defined storage to
provide elastic performance for latency-sensitive workloads.
Ultrastar® DC SA620* is a flash-based SATA SSD that offers up to 1.92TB of capacity and
works within existing infrastructure. With data center features to support “mission-
critical” types of data services, Ultrastar DC SA620 delivers a balance of storage
capacity and performance. Delivering up to 52K random mixed 70/30 R/W IOPS and
maximum write latencies as low as 56 microseconds, DC SA620 is well-suited to support
demanding tiers of service at multi-petabyte capacity levels.
Ultrastar DC SA620 price/performance value is achieved by leveraging enterprise-class
performance to enable cloud storage and compute density without the sacrifice of a
low latency QoS or write operations. Ultrastar DC SA620 provides an overall lower total
cost of ownership (TCO) based on the ability to achieve storage and compute density
for elastic cloud computing.
Highlights
Capacity from 400GB to 1.92TB
Optimized to help scale Cloud and
Hyperscale environments
6Gb/s SATA interface works with existing
infrastructure
Advanced power loss data management
technology
Applications/Environments
Demanding QoS, latency-sensitive
applications and databases
IaaS, PaaS, and SaaS infrastructure
NoSQL performance acceleration
DBaaS, MySQL, PostgreSQL transaction
processing
Social media, web servers
Software-defined storage
E-commerce, micropayments
DATA S H EET SATA DATA CE N T E R SS D
Ultrastar® DC SA620
Features & Benefits
Feature / Function Benefits
Performance 15mm MLC NAND flash memory
525/460 MB/s sequential R/W
76K/36K IOPS random R/W
52K IOPS on 70/30 mixed R/W
Reliable throughput for cloud and hyperscale environments
Supports fast access to data
Capacity 400GB to 1.92TB More capacity in standard form factor with lower Watts/TB
Reliability 0.44% AFR (2M hours MTBF)
1E-17 bit error rate
Power loss data management
Guardian Technology Platform
Reduced field replacement effort
Enhanced error detection and correction for optimal data integrity
Assures data integrity during power failure
Supports improved flash endurance and data integrity
Security Cryptographically signed firmware Protection against unauthorized firmware updates
Integration HDD architecture commonality
SATA 6Gb/s interf ace
Works in existing infrastructure
Trusted, proven design
*Previously known as Cloudspeed Ultra Gen. II and Cloudspeed Eco Gen. II from the SanDisk® brand
1.92TB – 400GB | 15nm MLC
2.5-inch 7mm | SATA 6Gb/s
WDS33-EN-US-0918–01
© 2018 Western Digital Corporation or its affiliates. All rights reserved. Produced 09/18. Western Digital, the Western Digital logo, SanDisk, CloudSpeed Eco,
CloudSpeed Ultra, Guardian Technology, and Ultrastar are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other
countries. MySQL is a trademark of Oracle and/or its affiliates. All other marks are the property of their respective owners. References in this publication to Western
Digital products, programs, or services do not imply that they will be made avillable in all countries. Product specifications provided are sample specifications that are
subject to change and do not constitute a warranty. Please visit the Support section of our website, www.wdc.com/dc-support, for additional information on product
specifications. Pictures shown may vary from actual products.
Specifications
1. 8 DW/D 0.6 DW/D
Model Number / Part Number SDLF1DAM-400G-1HA1 / 0TS1819
SDLF1DAM-800G-1HA1 / 0TS1820
SDLF1CRM-016T-1HA1 / 0TS1821
SDLF1DAR-480G-1HA1 / 0TS1791
SDLF1DAR-960G-1HA1 / 0TS1792
SDLF1CRR-019T-1HA1 / 0TS1793
Configuration
Interface SATA 6Gb/s
Capacity 1.6TB / 800GB / 400GB 1.92TB / 960GB / 480GB
Endurance (Drive Writes per Day – DW/D) 1.8 for 5 years -or- 3 for 3 years 0.6 for 5 years -or- 1 for 3 years
Maximum Terabytes Written (TBW) 5,256 / 2,628 / 1,314 2,102 / 1,051 / 526
Form Factor 2.5-inch
Flash Memory Technology 15nm MLC NAND
Performance³
Sequential Read Throughput (max MiB/s, Seq 128KiB, QD32) 512
Sequential Write Throughput (max MiB/s, Seq 128KiB, QD32) 445
Read IOPS (max, Rnd 4KiB, QD32) 76,000
Write IOPS (max, Rnd 4KiB, QD32) 32,000 16,000
Mixed IOPS (70/30 R/W, max, 4KiB, QD32) 52,000 28,000
Write Latency (s, max) 56 66
Reliability
Unrecoverable Bit Error Rate (UBER) 1 in 1017
MTBF5 (M hours) 2.0
Annualized Failure Rate (AFR) 0.44%
Availability (hrs/day x days/wk) 24×7
Limited Warranty 5 years or Max TBW, whichever occurs first
Power
Requirement (DC, +10%/- 5%) +5V
Operating (W, average sequential) 3.8 (write) / 2.6W (read)
Idle (W) 1.6
Physical Size
z-height (mm) 7.17
Dimensions (width x depth, mm) 69.85 × 100.2
Weight (g, max) 89.9
Environmental
Operating Temperature 0o to 70oC
Non-operating Temperature -40o to 85oC
DATA S H EET SATA DATA CE N T E R SS D
Ultrastar® DC SA620
5601 Great Oaks Parkway
San Jose, CA 95119, USA
US (Toll-Free): 800.801.4618
International: 408.717.6000
www.westerndigital.com
¹ One megabyte (MB) is equal to one million bytes, one gigabyte (GB) is equal to 1,000MB (one billion
bytes), and one terabyte (TB) is equal to 1,000GB (one trillion bytes) when referring to storage
capacity. Accessible capacity will vary from the stated capacity due to formatting, system software,
and other factors.
² Endurance rating based on DW/D using 4KiB random write workload over 5 years
³ Performance will vary by capacity point, or with the changes in useable capacity. Consult product
manual for further details. All performance measurements are in full sustained mode and are peak
values. Specifications subject to change. 1MiB=1,048,576 bytes or 220, 1KiB= 1,024 bytes or 210.
⁴ Average write latency at 4KiB QD=1
⁵ MTBF and AFR specifications are based on a sample population and are estimated by statistical
measurements and acceleration algorithms under typical operating conditions for this drive model.
MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty.
⁶ The warranty for the product will expire on the earlier of (i) the date when the flash media has reached
one-percent (1%) of its remaining life or (ii) the expiration of the time period associated with the product.
⁷ Internal drive temperature as measured via the drive’s temperature sensor.