Western Digital SDBPNTY-256G operation manual

PRODUCT MANUAL

PC SN730 NVMe™ SSD

For Generic OEM

00-01-WW-04-00047

Revision History

Revision Date Description Reference

1.0 November 22, 2019 Initial release.

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Table of Contents

TABLE OF CONTENTS

1. PREFACE........................................................................................................................... 7

1.1 Typographical Conventions ............................................................................................................7

1.2 Glossary of Abbreviations and Acronyms......................................................................................7

2. INTRODUCTION ................................................................................................................. 8

2.1 General Description ........................................................................................................................ 8

2.2 Key Features and Specification.......................................................................................................9

2.3 Functional Description ...................................................................................................................10

2.4 Advanced Flash Management .......................................................................................................10

2.4.1 Defect and Error Management ............................................................................................ 10

2.4.2 Wear Leveling ...................................................................................................................... 10

2.4.3 Bad Block Management....................................................................................................... 10

2.4.4 Background Garbage Collection ........................................................................................10

2.4.5 SLC Cache - nCache 3.0 .......................................................................................................11

2.4.6 Error Correction Layers ........................................................................................................11

3. GENERAL PRODUCT SPECIFICATIONS .................................................................................12

3.1 Interface .......................................................................................................................................... 12

3.2 Hardware Configuration ................................................................................................................ 12

3.3 Capacity .......................................................................................................................................... 12

4. PERFORMANCE .................................................................................................................13

OWER CHARACTERISTICS................................................................................................14

5. P

5.1 Supply Voltage ............................................................................................................................... 14

5.2 Average Active-Power Consumption........................................................................................... 14

5.3 Operating Power Consumption – Average Maximum ................................................................ 14

5.4 Peak Power and In-Rush Current .................................................................................................. 15

5.5 NVMe Power Management ............................................................................................................ 15

5.6 Graceful Power-off Requirements ................................................................................................ 16

6. THERMAL THROTTLING .....................................................................................................17

6.1 Self-Thermal Throttling .................................................................................................................. 17

6.2 Denial of Service............................................................................................................................. 17

7. ENDURANCE.....................................................................................................................18

ECURITY ........................................................................................................................19

8. S

8.1 Password Lock Through TCG Pyrite 2.0 ...................................................................................... 19

8.2 Secure Erase .................................................................................................................................. 20

8.3 Security of Read-Only Mode ........................................................................................................ 20

8.4 Secure Field Firmware Update (FFU)............................................................................................ 21

8.5 Secure Boot .................................................................................................................................... 21

8.6 Secure RMA..................................................................................................................................... 21

9. PHYSICAL SPECIFICATIONS...............................................................................................22

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Table of Contents

9.1 M.2 2280 Form Factor ................................................................................................................... 22

10. ENVIRONMENTAL SPECIFICATIONS .................................................................................... 23

10.1 Temperature ...................................................................................................................................23

10.2 Humidity..........................................................................................................................................23

10.3 Vibration..........................................................................................................................................23

10.4 Shock ...............................................................................................................................................23

10.5 Altitude............................................................................................................................................24

10.6 Electrostatic Discharge (ESD) .......................................................................................................24

10.7 Acoustics .........................................................................................................................................24

10.8 Chemical Restrictions ....................................................................................................................24

10.9 Regulatory Agency Approvals and Declarations ....................................................................... 25

11. RELIABILITY CHARACTERISTICS......................................................................................... 27

11.1 Error Rate ........................................................................................................................................27

11.2 Mean Time to Failure (MTTF) .........................................................................................................27

12. WINDOWS DEVICE CERTIFICATIONS................................................................................. 28

12.1 HCK Certification........................................................................................................................... 28

12.2 HLK Certification ........................................................................................................................... 28

13. INTERFACE...................................................................................................................... 29

13.1 Supported Standards.................................................................................................................... 29

13.2 Pin Assignments - M.2 2280, M Key ............................................................................................. 29

14. SUPPORTED NVME COMMANDS AND FEATURES ................................................................30

14.1 NVMe Command Set..................................................................................................................... 30

14.2 Identify Controller Response ........................................................................................................ 31

14.3 Log Pages....................................................................................................................................... 38

14.3.1 SMART/Health Information (Log Identifier 02h)...............................................................39

14.3.2 Program/Erase SMART Counters (Log Identifier CDh) ...................................................39

15. ORDERING INFORMATION.................................................................................................40

ONTACT INFORMATION...................................................................................................41

16. C

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List of Figures

LIST OF FIGURES

Figure 2-1 Western Digital PC SN730 NVMe SSD Tiered Caching Technology .......................................11

Figure 9-1 Top and side view of the PC SN730 NVMe SSD ...................................................................... 22

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List of Tables

LIST OF TABLES

Table 1-1 Typographical Conventions...........................................................................................................7

Table 1-2 Glossary of Abbreviations and Acronyms ....................................................................................7

Table 2-1 Key Features and Specifications for Western Digital PC SN730 NVMe SSD.............................9

Table 3-1 PC SN730 NVMe SSD Hardware Configuration.......................................................................... 12

Table 3-2 Western Digital CL SN730 NVMe SSD Capacity Specification ................................................ 12

Table 4-1 Western Digital PC SN730 NVMe SSD M.2 2280 Performance................................................. 13

Table 5-1 Western Digital PC SN730 NVMe SSD Supply Voltage............................................................. 14

Table 5-2 Western Digital PC SN730 NVMe SSD Average Active-Power Consumption........................ 14

Table 5-3 Western Digital PC SN730 NVMe SSD Average Max Power Consumption ............................ 14

Table 5-4 Western Digital PC SN730 NVMe SSD Peak Power and In-Rush Current ............................... 15

Table 5-5 PC SN730 NVMe SSD Power Consumption and Performance Per NVMe Power State ......... 15

Table 6-1 Western Digital PC SN730 NVMe SSD Performance Under Thermal Throttling ..................... 17

Table 7-1 Western Digital PC SN730 NVMe SSD Endurance ..................................................................... 18

Table 8-1 Western Digital PC SN730 NVMe SSD Format NVM Modes and Results................................ 20

Table 9-1 PC SN730 NVMe SSD M.2 2280 Form Factor Mechanical Specifications................................ 22

Table 10-1 Western Digital PC SN730 NVMe SSD Temperature Specification ........................................23

Table 10-2 Western Digital PC SN730 NVMe SSD Humidity Specification ..............................................23

Table 10-3 Western Digital PC SN730 NVMe SSD Vibration Specification..............................................23

Table 10-4 Western Digital PC SN730 NVMe SSD Shock Specification ...................................................23

Table 10-5 Western Digital PC SN730 NVMe SSD Altitude Specification................................................24

Table 10-6 Western Digital PC SN730 NVMe SSD ESD Specification.......................................................24

Table 11-1 Western Digital PC SN730 NVMe SSD MTTF .............................................................................27

Table 13-1 M.2 Pin Assignments .................................................................................................................. 29

Table 14-1 Admin Commands...................................................................................................................... 30

Table 14-2 NVM Commands........................................................................................................................ 30

Table 14-3 Set Features/Get Features........................................................................................................ 31

Table 14-4 Controller Capabilities and Features........................................................................................ 31

Table 14-5 Admin Command Set Attributes and Optional Controller Capabilities ................................32

Table 14-6 NVM Command Set Attributes..................................................................................................34

Table 14-7 Power State Descriptors............................................................................................................35

Table 14-8 Vendor Specific (VS) ................................................................................................................. 38

Table 14-9 PC SN730 NVMe SSD Log Pages .............................................................................................. 38

Table 14-10 Western Digital PC SN730 NVMe SSD SMART/Health Information .....................................39

Table 14-11 Program/Erase SMART Counters (Log Identifier CDh) ..........................................................39

Table 15-1 PC SN730 NVMe SSD Ordering Information ............................................................................ 40

Table 15-2 PC SN730 NVMe SSD Products SKUs....................................................................................... 40

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1.0 PREFACE

1.1 Typographical Conventions

This document uses the typographical conventions listed and shown in Table 1-1.

Table 1-1. Typographical Conventions

Preface

Convention Usage Examples

Note: Important additional information or fur-

ther explanation of a topic.

Bold A command or system input that you

type, or text or a button displayed on a
screen.

Italics Italic font indicates any of the following:

 A term with a specific meaning in the

context of this document.

 Emphasis on specific information.
 Reference to another document.

Blue Text References hyperlinks. For more details, visit

Note: A weekly backup is rec­ommended.

Click HELP for details on disas­ter recovery.

Detailed information on disas-
ter recovery methods is avail­able in Administrator Guide.

www.westerndigital.com

1.2 Glossary of Abbreviations and Acronyms

This section shows the glossary of abbreviations and acronyms used in this
document.

Table 1-2. Glossary of Abbreviations and Acronyms

Abbreviation/Acronyms Definition

AES Advanced Encryption Standard

APST Autonomous Power State Transitions

ASPM Active State Power Management

ECC Error Correction Code
EDC Error Detection Code

ESD Electrostatic Discharge
FFU Field Firmware Update

FW Firmware

HCTM Host Control Thermal Management

LBA Logical Block Addressing

LDPC Low-Density Parity Check

MLC Multi Level Cell

MTTF Mean Time to Failure

NVMe Non-Volatile Memory Express

PCIe Peripheral Component Interconnect Express

RTD3 Runtime D3

SSC Security Subsystem Class

SD Storage Device
SED Self-Encrypting Drive
SLC Single Level Cell
SSD Solid State Drive

TBW Terabytes Written

TCG Trusted Computing Group

TLC Triple Level Cell

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2.0 INTRODUCTION

This manual describes the functional, mechanical, and interface specifications of the Western
Digital® PC SN730 NVMe™ SSD.

2.1 General Description

The Western Digital PC SN730 NVMe SSD was designed to deliver high performance
and ultra-low power standby mode for Notebooks, Desktops and Ultrathin NVMe
platforms.

The proven Western Digital in-house architecture is optimized for the client SSD, both
corporate and commercial, platforms needs. Among other features, the PC SN730
NVME SSD supports the nCache™ 3.0 for SLC management, the power optimized 3
Gear LDPC Hardware Engine, BICS4 multi-pages XOR protection and a full ECC data­path protection.

The nCache 3.0 is the 3rd Generation of Western Digital Caching architecture,
introducing both Reads and Writes speed enhancements. It supports an enhanced
evacuation policy, allowing the SLC to be empty faster, and as well as direct-TLC
access for faster (write) direct access.

The PC SN730 NVME SSD is optimized for the demanding power and thermal
management requirements of low power hosts. It features an NVMe Low-Power state,
NVMe Power Management, NVMe HCTM (Host Control Thermal Management), NVMe
APST (Autonomous Power State Transitions) and NVMe ASPM (Active State Power
Management). In addition, PC SN730 NVME SSD includes a self-thermal throttling
mechanism as the last level of thermal protection

Introduction

The PC SN730 NVME SSD is available in M.2 2280 single sided form factor, with

1

capacities of 256, 512 and 1024 gigabytes (GB)

.

1

1 gigabyte (GB) = 1 billion bytes. Actual capacity may be less due to operating environment.

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Introduction

2.2 Key Features and Specification

Table 2-1. Key Features and Specifications for Western Digital PC SN730 NVMe SSD

Uncorrectable bit error rate (UBER)

Non-Operating Temperature and Storage

Operating and Non-Operating Shock 1500G, 0.5ms, half sine, 3 pulses x 6 surfaces

1

Logical capacity of the drive conforms to the IDEMA HDD Specification. See www.idema.org for details. A portion of the

drive capacity is not available for data storage. 1 gigabyte (GB) = 1 billion bytes.

2

Performance is measured by CrystalDiskMark 6.0.2 using 1GB LBA range. Windows 10 using Microsoft driver build 17134.112,

Secondary drive FOB. ASUS Z270-A platform with Intel® i7-7700K 4.2Ghz processor. C-state On.

3

Average Power as measured by MobileMark™ 2014 on i5-8250U Kabylake-R, Windows 10 RS5 1809 build 17763.195, iRST

15.44.0.1010, primary drive. Average 5s.

4

Low Power referring to NVMe PS4 at 25°C.

5

Operational temperature is defined as temperature reported by the drive. Note that drive temperature readings are

expected to be higher than ambient temperature when the SSD is placed inside a system.

6

Non-operating storage temperature does not guarantee data retention beyond endurance and data retention

specifications.

Memory Supported Western Digital BiCS4 256Gb 2P X3

1

Unformatted Capacities

Form Factors M.2 2280 S3-M

Host Interface PCIe Gen3 x4

Host Protocol NVM Express 1.3

Security Protocol  Non-SED SKU: TCG Pyrite 2.0 and ATA Password

Performance

Average Power

Low Power

Data Path Protection Full ECC Data Path

Flush Management LDPC Engine + multi page XOR protection

Data Path Protection Full ECC Data Path

Code Protection Secure Boot

SLC Cache nCache 3.0

Thermal Throttling  NVMe Host Control Thermal Management (HCTM)

Power Management  NVMe Power Management

Mean Time to Failure (MTTF) 1.75M hours

Operating Temperature

Non-Operating Vibration 4.9G

Operating Vibration 5G

256GB, 512GB, 1024GB

 SED SKU: TCG Opal 2.01 and ATA Password

2

 Sequential Read: Up to 3,400 MB/s
 Sequential Write: Up to 3,100 MB/s
 Random Read 4K: Up to 550K IOPS
 Random Write 4K: Up to 550K IOPS

3

100mW

4

3.5mW

 Self-Throttling

 NVMe Autonomous Power State Transitions (APST)
 Active State Power Management (ASPM)

1 bit per 10

5

0°C to 70°C

6

-55°C to +85°C

, 7 to 800Hz, 15min/axis on 3 axes

RMS

, 10 to 2,000Hz, 15min/axis on 3 axes

RMS

16

bits read

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Introduction

2.3 Functional Description

The Western Digital PC SN730 NVMe SSD supports the following features:

 NVM Express 1.3 compliance

 In-house 3 gears LDPC engine with advanced DSP capabilities in hardware

 NAND XOR protection for multi-page recovery

 Dynamic and static wear-leveling to extend the life of the SSD

 TCG Pyrite Security for device lock

 Secure Boot including RSA Authentication

 Secure FFU

2.4 Advanced Flash Management

2.4.1 Defect and Error Management

The PC SN730 NVME SSD contains an enhanced defect and error management
system. If necessary, the device will rewrite data from a defective block to a good
block. This action is completely transparent to the host and does not consume any
user data space.

2.4.2 Wear Leveling

NAND based SSDs use dynamic and static wear leveling and automatic block
management to ensure an even distribution of write/erase cycles throughout the
entire device. These processes guarantee high data reliability and maximize flash life
expectancy. Wear leveling is done between all TLC blocks and separately between all
SLC blocks.

2.4.3 Bad Block Management

Bad blocks are occasionally created during the life cycle of a flash component. These
bad blocks must be marked and replaced dynamically in order to prevent read/write
failures. When a bad block is detected, the embedded Bad Block Mapping algorithm
removes the block from future use.

2.4.4 Background Garbage Collection

The flash management firmware will perform internal house-keeping activities, such
consolidating and flushing the SLC blocks to the TLC storage or reorganizing the data
in the TLC array or SLC array. These activities are performed in the background and
are transparent to the host, thus improving performance while providing a seamless
user experience.

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Introduction

2.4.5 SLC Cache - nCache 3.0

The nCache 3.0 is a pool of X1 (SLC) blocks for sequential and random host
operations. These X1 blocks are used as write cache to accumulate and consolidate all
writes at high speed.

The PC SN730 NVME SSD utilize the nCache 3.0 tiered caching which further improves
performance and power efficiently by introducing several enhancements as:

 Direct TLC (write) Access - improves sustain-write-access power efficiency and

write throughput.

 Enhanced Evacuation Policy - improves the write-burst access speed.

As mentioned above, the nCache 3.0 works in the background to flush them into the
larger X3 (TLC) storage blocks and uses optimized write transaction sizes to maximize
endurance. Once the SLC blocks are full the Drive will continue to program TLC
blocks directly, and will re-locate the data from SLC to TLC on Idle times.

Figure 2-1. Western Digital PC SN730 NVMe SSD Tiered Caching Technology

2.4.6 Error Correction Layers

The PC SN730 NVME SSD advanced Error Correction and Data recovery mechanism
constructed from multi layers of protection:

 Multi Gear LDPC Engine – The PC SN730 NVME SSD LDPC use Multi-Gear

Hardware LDPC Engine tailored for Western Digital 3D NAND. The ultra-low
power and high speed - Gear1 Mode, help reduce the overall power consumed by
the LDPC during reads and writes.

 Hardware DSP and Soft Decode – Hardware accelerators used for enhanced Error

Correction; at high BER rates.

 XOR Recovery – The XOR Recovery is an extreme and rare protection layer. It is a

RAID-Like protection and is able to recovery multi-pages at need.

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General Product Specifications

3.0 GENERAL PRODUCT SPECIFICATIONS

3.1 Interface

The PC SN730 NVME SSD is a PCI Express Gen3 x4 SSD.

Complies with:

 PCI Express 3.0 up to four lanes, and a bit rate of 2.5Gbps or 5Gbps or 8Gbps

 Configurable Lane width: x1, x2 and x4

 NVM Express Rev 1.3

3.2 Hardware Configuration

Table 3-1 provides the basic hardware configuration values for the PC SN730 NVME
SSD.

Table 3-1. PC SN730 NVMe SSD Hardware Configuration

SSD Capacity Form Factor NAND Technology Memory

256GB M.2 2280-S3-M BiCS4 256Gb 2P X3 2 x 4D BGA

512GB M.2 2280-S3-M BiCS4 256Gb 2P X3 2 x 8D BGA

1024GB M.2 2280-S3-M BiCS4 256Gb 2P X3 2 x 16D BGA

3.3 Capacity

Table 3-2. Western Digital CL SN730 NVMe SSD Capacity Specification

Unformatted Capacity

256GB 500,118,192 M.2 2280-S3-M

512GB 1,000,215,216 M.2 2280-S3-M

1024GB 2,000,409,264 M.2 2280-S3-M

1

1 gigabyte (GB) = 1 billion bytes. Some of the listed capacity is used for formatting and other functions,

and thus is not available for data storage.

2

1 Sector = 512 bytes. LBA count based on IDEMA standard.

1

Sectors in LBA Mode

2

Available Form Factors

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4.0 PERFORMANCE

Table 4-1 includes the PC SN730 NVMe SSD performance in a system that supports PCI
Express Gen3 x4, FOB in CDM and PC Mark Vantage.

Table 4-1. Western Digital PC SN730 NVMe SSD M.2 2280 Performance

Parameter Queue Depth / Threads 256GB 512GB 1024GB

Performance

Sequential Read 128KB MB/s

Sequential Write 128KB MB/s

Random Read 4KB (32QD) IOPS

Random Write 4KB (32QD) IOPS

1

Test Conditions: Performance is measured by CrystalDiskMark 6.0.2 using 1GB LBA range. Windows 10 using

Microsoft driver build 17134.112, Secondary drive FOB. ASUS Z270-A platform with Intel® i7-7700K 4.2Ghz processor.
C-state On.

1

1

1

1

QD=32, T = 1 3,150 3,400 3,400

QD=32, T = 1 2,100 2,700 3,100

QD=32, T = 8 270,000 460,000 550,000

QD=32, T = 8 280,000 400,000 550,000

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