Western Digital SDBPNTY-256G operation manual

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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.

Western Digital Technologies, Inc. or its affiliates' (collectively “Western Digital”) general policy does not recommend the use of its products in life support applications where in a failure or malfunction of the product may directly threaten life or injury. Per Western Digital Terms and Conditions of Sale, the user of Western Digital products in life support applications assumes all risk of such use and indemnifies Western Digital against all damages.

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This document and its contents, including diagrams, schematics, methodology, work product, and intellectual property rights described in, associated with, or implied by this document, are the sole and exclusive property of Western Digital. No intellectual property license, express or implied, is granted by Western Digital associated with the document recipient's receipt, access and/or use of this document or the products referred to herein; Western Digital retains all rights hereto.

Western Digital, the Western Digital logo, and nCache are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. The NVMe word mark is a trademark of NVM Express, Inc. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products. Not all products are available in all regions of the world.

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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

capacities of 256, 512 and 1024 gigabytes (GB)

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

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.

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.

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.

Low Power referring to NVMe PS4 at 25°C.

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.

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

specifications.

Memory Supported Western Digital BiCS4 256Gb 2P X3

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

 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

100mW

3.5mW

 Self-Throttling

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

1 bit per 10

0°C to 70°C

-55°C to +85°C

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

RMS

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

RMS

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 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.

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

Sectors in LBA Mode

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

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.

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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Power Characteristics

5.0 POWER CHARACTERISTICS

5.1 Supply Voltage

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

Parameter Specification

Input Voltage M.2 2280 3.3V ± 5%

Maximum Ripple 100mV (peak to peak), 100Hz to 6MHz

Maximum Supply Rise Time 100ms

5.2 Average Active-Power Consumption

The average active-power consumption is defined as the blended read/write/idle power used by the drive while in operation with a commonly used operating system. It is measured using the MobileMark™ benchmark, average 5 seconds. During this test Microsoft StorNVMe driver triggers non-operative low power state.

This benchmark simulates the typical usage of user applications in a Windows environment, providing a reproducible test for measuring average active-power consumption.

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

Form Factor Input Voltage Test Suite Unit 256GB 512GB 1024GB

M.2 2280 3.3V ± 5% Productivity mW 100 100 100

5.3 Operating Power Consumption – Average Maximum

Average maximum operating power consumption is measured while the PC SN730 NVME SSD is continuously processing sequential read and write commands (tested separately) for at least 1 minute, with a transfer size of 256 sectors per command (128KB), queue depth of 32 and 1 thread. The sampling interval is 125 milliseconds. This benchmark is designed to test the worst-case scenario, when continuous power is required by the PC SN730 NVME SSD during long read or write command sequences.

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

Form Factor Input Voltage Test Unit 256GB 512TB 1024GB

Read

M.2 2280 3.3V ± 5%

Write

Measured using MobileMark™ 2014 on ASUS B9440UA, i5-7200U, Windows 10 RS5 1809 build 17763.529, iRST

15.44.0.1010, primary drive. Average power.

Measured at 25°C. Power consumption can vary due to input voltage and ambient temperature variation.

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mW 3,900 4,700 5,200

A 1.18 1.42 1.58

mW 2,900 4,100 5,400

A 0.88 1.24 1.64

Power Characteristics

5.4 Peak Power and In-Rush Current

Peak power consumption is the maximum instantaneous power consumption measured while the PC SN730 NVME SSD is continuously processing sequential read and write commands (tested separately) for at least 1 minute, with a transfer size of 256 sectors per command (128KB), queue depth of 32 and 1 threads. The sampling interval is 10µs. This benchmark is designed to test the worst-case scenario, when continuous power is required by the PC SN730 NVME SSD during long read or write command sequences.

Maximum in-rush current refers to the maximum instantaneous power consumption of the PC SN730 NVME SSD drive after a power cycle until all voltage rails required for operation are stabilized to their nominal values on the drive. The sampling interval is 10µs.

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

Form Factor Input Voltage Test Unit 256GB 512GB 1024GB

Peak Power

(10us)

M.2 2280 3.3V ± 5%

Max In-Rush

mW 5,610 6,270 7,590

A 1.7 1.9 2.3

mW 6,930 6,930 6,930

A 2.1 2.1 2.1

5.5 NVMe Power Management

The PC SN730 NVME SSD supports NVMe power management. Product Identify reports 5 NVMe power modes as detailed below.

L1.2 mode enabled and asynchronously controlled by the PCI Express layer.

Table 5-5 details the power consumption and performance per power state. Power consumption and performance are measured during sustained sequential write or sustained sequential read as defined in Section 4.0 Performance on page 13.

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

Power

Mode

PS0 Full Performance 256GB: 3,100

Device State

Sustained Sequential

Read/Write up to [MB/s] Avg Power

512GB: 3,400 1024GB: 3,400

256GB: 3.9W 512GB: 4.7W 1024GB: 5.4W

Entry Latency

(ENLAT)

--- ---

Exit Latency

(EXLAT)

PS1 Light Throttling 256GB: 1,600

512GB: 1,600 1024GB: 1,600

PS2 Heavy Throttling 256GB: 350

512GB: 350 1024GB: 350

PS3 Non-Operational,

Rapid recovery

PS4 Non-Operational,

Slow Recovery

256GB: 3.3W 512GB: 3.5W 1024GB: 3.7W

256GB: 2.0W 512GB: 2.1W 1024GB: 2.2W

--- 256GB: 30mW 512GB: 30mW 1024GB: 30mW

--- 256GB: 3.5mW 512GB: 3.5mW 1024GB: 3.5mW

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---- ----

4ms 10ms

4.5ms 35ms

Power Characteristics

5.6 Graceful Power-off Requirements

On most operating systems, Write Cache is enabled by default. This feature is not specific to Western Digital SSD products. There may be data residing in the PC SN730 NVME SSD cache that have not been written to the flash memory. To ensure that the data is properly committed to flash memory, the PC SN730 NVME SSD requires the host to write 01b (normal shutdown) to the Shutdown Notification (CC:SHN) field. This command instructs the PC SN730 NVME SSD to write all of its volatile data cache to flash memory and returns a GOOD status to the host after its successful completion. This command is handled transparently by most operating systems during the shutdown sequence (for example, hibernation, shutdown, and standby.)

However, if power is lost without warning – leading to an ungraceful shutdown – data loss may occur. This may also lead to a longer power-on time for the subsequent power-up.

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6.0 THERMAL THROTTLING

6.1 Self-Thermal Throttling

In order to protect the integrity of the data and prevent excessive heat dissipation, the PC SN730 NVME SSD utilizes several component temperature sensors (junction temperature) to monitor the SSD critical components temperatures. If a sensor temperature rises above the allowable limit, system performance is lowered until the temperature decreases to an acceptable level. The device returns to full performance when the temperature returns to a normal range.

Table 6-1 describes the performance results, while thermal throttling is activated.

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

Thermal Throttling

PC SN730

NVMe SSD

Self-Throttling Mode

Power [W] 1.7W 1.7W 1.7W 1.7W 1.7W 1.7W

Performance

While during self-throttling mode PC SN730 NVME SSD is keeping the power value flat; performance may

be varied between devices due to process variation.

[MB/s]

Sequential

6.2 Denial of Service

To avoid data corruption, and as a last protection measure, if the NAND temperature increases above the maximum allowed then the device will enter a denial of service state. A recovery to functional mode is only by a full power cycle.

256GB 512GB 1TB

Read

40 40 40 40 40 40

Sustained

Sequential

Write

Sequential

Read

Sustained

Sequential

Write

Sequential

Read

Sustained

Sequential

Write

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7.0 ENDURANCE

The endurance of the PC SN730 NVME SSD is calculated using JEDEC client workload (JESD219), unconnected to power.

Endurance is a direct function of user workload and access pattern. It is defined in terms of Terabytes Written (TBW). Refer to Table 7-1 below.

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

Parameter 256GB 512GB 1024GB

Drive Endurance Data Retention I Year @ 30°C 200 TBW 300 TBW 400 TBW

Endurance

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8.0 SECURITY

8.1 Password Lock Through TCG Pyrite 2.0

The Western Digital PC SN730 NVMe SSD supports password locking of user data as defined in the following TCG specification: TCG Storage Security Subsystem Class:

Pyrite. Specification Version 2.0.

The Western Digital PC SN730 NVMe SSD implementation of TCG Pyrite includes the following capabilities and characteristics:

 Provides a mechanism that locks access to the entire user media for NVMe read

 TCG Pyrite features:

Security

and write commands. When configured, access is locked automatically upon device power cycle.

– 1 global locking range – Separate flags to control Read and Write locking – 1 admin authority, 2 user authorities – Revert – TCG DataStore table size is 128KB – Supported Pyrite authorities:

 One SID to activate TCG security  One admin authority to configure locking and permissions  Up to two regular user authorities to unlock read and write commands

 Block SID is supported in accordance to TCG Storage Feature Set: Block SID

Authentication

 PSID Revert feature for TCG Pyrite 2.0:

– Level 0 discovery for PSID Extension Feature Descriptor – Physical Presence SID (PSID) is supported in accordance to TCG Storage Opal

SSC Feature Set: PSID.

– PSID Revert erases data using the Block Erase method

 System BIOS shall request and submit user password to unlock device during

system boot

 Device supports up to 5 authentication attempts with wrong password. After

that, it requires power cycle before accepting a new authentication

 Unlock password is not stored in device as a plain text, cryptographic digest is

used instead

 By default, device is shipped with TCG security in inactive state and default

credentials of SID authority. BIOS shall support the TCG Block SID Authentication feature to prevent malicious host applications from taking control over device security with default SID credentials.

 Encryption of user data and MBR shadowing are not supported.

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8.2 Secure Erase

Western Digital PC SN730 NVMe SSD supports sanitization of user data using the Format NVM command in one of the following modes:

1. The No Secure Erase mode implements logical erase of user data: cleanup of FTL tables marks all blocks as unallocated. Subsequent read commands return zeroes for erased data.

2. The User Data Erase mode implements physical erase of user data with NAND block erase operation. The process covers all user LBAs including any spare and re-allocated blocks.

3. The Crypto Erase implements cryptographic erase of user data by eradicating its encryption key. The Crypto Erase mode is not supported on Non-SED devices.

Western Digital PC SN730 NVMe SSD SED supports sanitization of user data using the Sanitize command in one of the following modes: Block Erase and Crypto Erase. The Overwrite mode is not supported.

Sanitization of locked devices is supported on PC SN730 NVME SSD SED with PSID revert command.

Table 8-1 summarizes sanitization modes and their result:

Security

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

PC SN730 NVMe SSD, Non-SED

Command Mode Operations Data at Rest Read Result

Format NVM 000b (No Secured Erase) FTL Cleanup Last Written Zeros

001b (User Data Erase) FTL Cleanup,

Block Erase

010b (Crypto Erase) N/A N/A N/A

Erased Zeros

8.3 Security of Read-Only Mode

Device enters Read-Only mode upon reaching End-of-Life conditions for user media. In this mode, it stops accepting commands that might write user or system data.

Format NVM in the User Data Erase and the Crypto Erase mode is also supported when device turns read only mode. It provides a secure option to erase all user data before disposal of the device or before returning it for FA. Successful status returned for the command is an indication of complete sanitization of user data. If device fails to complete the process, sanitization should be addressed by physical destroy methods, e.g. shredding.

Device preserves TCG locking settings as configured before transition to Read-Only mode. Host application shall be ready that NVMe commands Format NVM and Sanitize are aborted when device is Write-locked. Host shall unlock device with valid user password before applying the command. Alternatively, it shall use sanitization commands of the active TCG Opal protocol: TCG Revert.

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Security

8.4 Secure Field Firmware Update (FFU)

The genuine Western Digital firmware update image is encrypted and signed. The RSA digital signature algorithm with 2048-bit key is used for signing of the file, while AES-CBC-256 algorithm is used for encryption.

Device automatically verifies signature of a firmware update image during FFU and rejects images that fails the procedure. Root certificate is provisioned to permanent eFuse storage in SSD controller during device manufacturing. FW signing process in WD relies on HSM-based signing server for storage of private keys to guaranty protection of the key leakage and auditability of FW releases.

Device implements no interface to update device firmware that bypasses regular FFU commands and to disable digital signature verification.

8.5 Secure Boot

Device verifies digital signatures of firmware images loaded from NAND Flash storage before running them on CPU during boot. Signatures cover all parts of stored firmware including boot loader. Boot loader itself is verified by ROM, then it verifies other parts. If firmware verification fails, device enters fail mode when it does not provide access to user data.

Secure Boot uses RSA digital signature algorithm with 2048-bit keys. FW signing process in WD relies on HSM-based signing server for storage of private keys. SSD controller includes HW acceleration for RSA calculations to make sure that signature verification does not cause significant delays for device initialization.

8.6 Secure RMA

All Western Digital PC SN730 NVMe SSD devices implement hardware locks for debug access to SSD controller and for any vendor-specific diagnostic commands. Removing these locks is limited only to authorized engineers in WD facilities. They authenticate device RMA with RSA challenge-request protocol that uses WD HSMbased signing server to generate unlock tokens. Public key to verification of the process is provisioned to device during manufacturing with root certificate burned in controller eFuse.

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Physical Specifications

9.0 PHYSICAL SPECIFICATIONS

9.1 M.2 2280 Form Factor

The M.2 2280 form factor complies with PCI Express M.2 (NGFF) Electromechanical Specification, rev. 1.1.

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

Parameter Specification

Type 256GB: M.2 2280 S3-M

Width 22 ± 0.15mm

Length 80 ± 0.15mm

PCB Thickness 0.80 ± 0.08mm

Component Height 1.5mm

Thickness (max) 256GB: 2.23mm

Typical Weight 7.3±0.5gr

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

512GB: M.2 2280 S3-M 1024GB: M.2 2280 S3-M

512GB: 2.38mm 1024GB: 2.38mm

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Environmental Specifications

10.0 ENVIRONMENTAL SPECIFICATIONS

10.1 Temperature

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

Parameter Specifications

Non-operational

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.

Non-operational storage temperature does not guarantee data retention.

10.2 Humidity

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

Operational

Non-Operational

10.3 Vibration

Operational

Parameter Specifications

Humidity (Non-condensation) 5% to 95%

Maximum Wet Bulb 30°C

Humidity (Non-condensation) 5% to 95%

Maximum Wet Bulb 40°C

0°C to 70°C

-55°C to 85°C

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

Non-Operation Vibration 4.9G

Operating Vibration 5G

10.4 Shock

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

Non-Operational Shock

Parameter Specifications

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

RMS

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

RMS

Parameter Acceleration Force

Operating and

1500G,0.5ms, half sine, 3 pulses x 6 surfaces

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10.5 Altitude

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

Operational/Non-operational -1500ft (-457m) to 40,000ft (12,192m)

Environmental Specifications

Parameter Specifications

10.6 Electrostatic Discharge (ESD)

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

Parameter Voltage

Contact ±4kV

Air 8kV

10.7 Acoustics

The PC SN730 NVMe SSD does not generate any acoustic noise (0dB).

10.8 Chemical Restrictions

The Western Digital PC SN730 NVMe SSD complies with the European Union’s Restriction on Use of Hazardous Substances in Electrical and Electronic Equipment (EU RoHS) Directive 2011/65/EC and European Union’s Registration, Evaluation, Authorization and Restriction of Chemicals (REACH), Regulation (EC) 1907/2006.

Western Digital PC SN730 complies with the European Community Directive 2012/ 19/EU on Waste Electrical and Electronic Equipment (WEEE).

It also complies with China’s management methods for controlling pollution by electronic information products (China RoHS).

Tested per IEC 61000-4-2 Standard.

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Environmental Specifications

10.9 Regulatory Agency Approvals and Declarations

PC SN730 meets the standards of the following regulatory agencies:

 Federal Communication Commission: Verified to comply with FCC Rules for

Radiated and Conducted Emission, Part 15, Subpart B, for Class B Equipment.

This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

– Reorient or relocate the receiving antenna. – Increase the separation between the equipment and receiver. – Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

– Consult the dealer or an experienced radio/TV technician for help.

 Canada EMI Compliance: Per ICES-003 Issue 5, Class B

 CE Compliance for Europe Countries and Morocco: Verified to comply with

EN55032:2015 for RF Emissions and EN55024:1998, A1:2001 + A2:2003, EN61000-32:2000, EN61000-3-3:1995 + A1:2001 for Generic Immunity as applicable.

Verified to meet or exceed Directive of Electromagnetic Compatibility 2014/30/ EU and Safety Low Voltage Directive 2014/35/EU.

 RCM Compliance for Australia and New Zealand: Verified to comply with AS/

NZ3548 for RF Emissions as required by the Australian Communications Authority.

 Korean KC Mark: Registered as a Class-B product with the South Korean Ministry

of Information and Communication.

 Taiwan BSMI ROHS Compliance: Certified as a Class-B product with the Bureau of

Standards Metrology and Inspection (BSMI ROHS).

 Voluntary Control Council for Interference (VCCI): Verified to comply with VCCI

V-2 (V-3 Technical Requirements), the Voluntary Control Council for Interference by Information Technology Equipment.

 CB-Scheme Safety Standard: Verified safety compliance per IEC 60950-1 (IEC

System for Mutual Recognition of Test Certificates for Electrical Equipment (IECEE)).

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Environmental Specifications

 Underwriters Laboratories for USA and Canada product safety: Bi-National UL

Standard CAN/CSA-C22.2 No. 60950/UL 60950-1 Standard for Safety of Information Technology Equipment, including Electrical Business Equipment.

 EU Safety Compliance: IEC 60950-1 per EN 60950-1, Standard for Safety of

Information Technology Equipment, including Electrical Business Equipment.

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Reliability Characteristics

11.0 RELIABILITY CHARACTERISTICS

11.1 Error Rate

The non-recoverable error rate is 1 error per 1017 bits read.

11.2 Mean Time to Failure (MTTF)

Mean Time to Failure (MTTF) is the reliability figure most often used for electronic equipment. The Western Digital PC SN730 NVMe SSD has an estimated MTTF using a prediction methodology based in accordance with the Telcordia Special Report SR-

332. The prediction is based on a Parts Stress Analysis.

Quality levels were defined as industrial grade (I) for all of the components. The detailed prediction for the system was performed at a temperature of 25°C in a GB (ground, benign) environment.

Table 11-1 summarizes the estimated MTTF results for each capacity.

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

Capacity Condition MTTF (Hours)

256GB Telcordia SR-332, GB, 25°C 1,752,000

512GB Telcordia SR-332, GB, 25°C 1,752,000

1024GB Telcordia SR-332, GB, 25°C 1,752,000

Based on internal testing using Telcordia stress part testing.

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Windows Device Certifications

12.0 WINDOWS DEVICE CERTIFICATIONS

12.1 HCK Certification

The PC SN730 NVMe SSD certified with Windows HCK (Hardware Certification Kit) for Windows 7.

 Category: Device

 Product Type: Hard Drive

12.2 HLK Certification

The PC SN730 NVMe SSD certified with Windows HLK (Hardware Lab Kit) for Windows 10.

 Category: Device

 Product Type: Hard Drive

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13.0 INTERFACE

13.1 Supported Standards

The PC SN730 NVMe SSD complies with the following standards:

 PCI Express® Base Specification Revision 3.0

13.2 Pin Assignments - M.2 2280, M Key

Table 13-1. M.2 Pin Assignments

Interface

Pin # Function Pin # Function

1 GND 2 3.3V 3 GND 4 3.3V 5 PETn3 6 NC 7 PETp3 8 PLN 9 GND 10 LED/DAS 11 PERn3 12 3.3V

13 PERp3 14 3.3V 15 GND 16 3.3V 17 PETn2 18 3.3V 19 PETp2 20 NC

21 GND 22 NC 23 PERn2 24 NC 25 PERp2 26 NC 27 GND 28 NC 29 PETn1 30 NC

31 PETp1 32 NC 33 GND 34 NC 35 PERn1 36 NC

37 PERp1 38 NC 39 GND 40 NC

41 PETn0 42 NC 43 PETp0 44 NC 45 GND 46 NC

47 PERn0 48 NC 49 PERp0 50 PERST#

51 GND 52 CLKREQ# 53 REFCLKn 54 NC 55 REFCLKp 56 NC 57 GND 58 NC 59 M key 60 M key

61 62 63 64 65 66

67 NC 68 NC 69 NC 70 3.3V

71 GND 72 3.3V

73 GND 74 3.3V 75 GND

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Supported NVMe Commands and Features

14.0 SUPPORTED NVME COMMANDS AND FEATURES

14.1 NVMe Command Set

PC SN730 NVMe SSD support NVMe 1.3 standard command set and the following configurations:

 1 Namespace

 64 Queues

 8 Async. Events Notifications

Table 14-1. Admin Commands

Command Name Opcode Comment

Delete I/O Submission Queue 00h

Create I/O Submission Queue 01h

Get Log Page 02h

Delete I/O Completion Queue 04h

Create I/O Completion Queue 05h

Identify 06h

Abort 08h

Set Features 09h

Get Features 0Ah

Asynchronous Event Request 0Ch Maximum of 8.

Firmware Commit 10h

Firmware Image Download 11h

Device Self-Test 14h

Format NVM (User Data Erase) 80h

Security Send 81h

Security Receive 82h

Sanitize 84h

Table 14-2. NVM Commands

Command Name Opcode Comment

Flush 00h

Write 01h

Read 02h

Write Uncorrectable 04h

Compare 05h

Write Zeros 08h

Dataset Management 09h

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Supported NVMe Commands and Features

Table 14-3. Set Features/Get Features

Command Name Opcode Comment

Feature Identifiers – Mandatory Arbitration

Feature Identifiers – Mandatory Power Management

Feature Identifiers – Optional LBA Range Type

Feature Identifiers – Mandatory Temperature Threshold

Feature Identifiers – Mandatory Error Recovery

Feature Identifiers – Optional Volatile Write Cache

Feature Identifiers – Mandatory Number of Queues

Feature Identifiers – Mandatory Interrupt Coalescing

Feature Identifiers – Mandatory Interrupt Vector Configuration

Feature Identifiers – Mandatory Write Atomicity

Feature Identifiers – Mandatory Asynchronous Event Configuration

Feature Identifiers – Optional Autonomous Power State Transition

Feature Identifiers – Optional Host Controlled Thermal Management

Feature Identifiers – Optional Non-Operational Power State Configuration

Feature Identifiers - Optional Telemetry

Feature Identifiers - Optional Sanitize Operations

14.2 Identify Controller Response

Table 14-4 defines the specifics of the Identify Controller returned by the PC SN730 NVMe SSD.

Table 14-4. Controller Capabilities and Features

Bytes Field Value Comments

01:00 PCI Vendor ID (VID) 15B7h

03:02 PCI Subsystem Vendor ID

(SSVID)

23:04 Serial Number (SN) Variable Unique serial number in ASCII

63:24 Model Number (MN) “WDC PC SN730” and

71:64 Firmware Revision (FR) Variable Format: 8 numeric digits

72 Recommended Arbitration

Burst (RAB)

75:73 IEEE OUI Identifier (IEEE) 001B44h

76 Controller Multi-Path I/O and

Namespace Sharing Capabilities (CMIC)

15B7h

SKU

0h 7-3 Reserved

2 0 = PCI Function 1 0 = Single Controller 0 0 = Single PCIe Port

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Supported NVMe Commands and Features

Table 14-4. Controller Capabilities and Features (Continued)

Bytes Field Value Comments

77 Maximum Data Transfer Size

7h 512KB

(MDTS)

79:78 Controller ID (CNTLID) 2017h

83:80 Version (VER) 10300h

87:84 RTD3 Resume Latency

7A120h 500,000us

(RTD3R)

91:88 RTD3 Entry Latency

F4240h 1,000,000us

(RTD3E)

95:92 Optional Asynchronous Events

200h

Supported (OAES)

99:96 Controller Attributes

(CTRATT)

239:100 Reserved 0h

255:240 NVMe Management Interface 0h

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

Bytes Field Value Comments

257:256 Optional Admin Command

Support (OACS)

17h Supported commands:

 Security Send and Security

Receive

 Format NVM  Firmware Commit and

Firmware Image Download

 Device Self-Test

15-9 Reserved 8-5 0=not supported 4 1 = Device Self-test com-

mand is supported

3 0 = no support for the

Namespace Management and Namespace Attachment commands

2 1 = Firmware Commit and

Firmware Image Download commands are supported

1 1 = Format NVMe com-

mand is supported

0 1 = Security Send and

Security Receive commands are supported

258 Abort Command Limit (ACL) 4h 5 Abort commands supported

259 Asynchronous Event Request

7h 8 AERs supported

Limit (AERL)

260 Firmware Updates (FRMW) 14h 7-5 Reserved

4 1 = firmware activation

without a reset is supported

3-1 010 = 2 firmware slots are

supported

0 1 = slot 1 is read only

0 = slot 1 is read/write

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Supported NVMe Commands and Features

Table 14-5. Admin Command Set Attributes and Optional Controller Capabilities (Continued)

Bytes Field Value Comments

261 Log Page Attributes (LPA) 1Eh Command Effects log page

262 Error Log Page Entries (ELPE) FFh 256 entries supported

supported 7-3 Reserved 3 1 = support for Telemetry

Host-Initiated and Telemetry Controller-Initiated log pages and sending Telemetry log

2 1 = support for extended

data for Get Log Page

1 1 = Command Effects Log

page is supported

0 0 = no support for

SMART/Health information log page on a per namespace basis

263 Number of Power States Sup-

port (NPSS)

264 Admin Vendor Specific Com-

mand Configuration (AVSCC)

265 Autonomous Power State Tran-

sition Attributes (APSTA)

267:266 Warning Composite Tempera-

ture Threshold (WCTEMP)

269:268 Critical Composite Tempera-

ture Threshold (CCTEMP)

271:270 Maximum Time for Firmware

Activation (MTFA)

275:272 Host Memory Buffer Preferred

Size (HMPRE)

279:276 Host Memory Buffer Minimum

Size (HMMIN)

295:280 Total NVMe Capacity (TNVM-

CAP)

311:296 Unallocated NVM Capacity

(UNVMCAP)

1h 7-1 Reserved

0 1 = All Admin Vendor Spe-

cific Commands use the format as defined by NVMe standard

1h Autonomous power state tran-

sitions supported

165h 357°K (83.85°C)

169h 361°K (87.85°C)

32h 5 seconds

256GB: 3B9E656000 512GB: 773C256000 1024GB: EE77A56000

315:312 Replay Protected Memory

Block Support (RPMBS)

317:316 Extended Device Self-Test

Time (EDSTT)

318 Device Self-test Options

(DSTO)

319 Firmware Update Granularity

(FWUG)

321:320 Keep Alive Support (KAS) 0h

322:323 Host Controlled Thermal Man-

agement Attributes (HCTMA)

256GB:1Ah 512GB:34h 1024GB:68h

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Supported NVMe Commands and Features

Table 14-5. Admin Command Set Attributes and Optional Controller Capabilities (Continued)

Bytes Field Value Comments

324:325 Minimum Thermal Management

Temperature (MNTMT)

326:327 Maximum Thermal Manage-

ment Temperature (MXTMT)

328:331 Sanitize Capabilities (SANICAP) Non-SED: 2h

332:335 Host Memory Buffer Minimum

Descriptor Entry Size (HMMINDS)

336:337 Host Memory Maximum

Descriptors Entries (HMMAXD)

511:338 Reserved 0h

Table 14-6. NVM Command Set Attributes

Bytes Field Value Comments

512 Submission Queue Entry Size

(SQES)

513 Completion Queue Entry Size

(CQES)

111h

165h

SED: 3h

66h 7-4 0110 = Maximum Submission

44h 7-4 0100 = Maximum Completion

Bit 1 = Support Block Erase Bit 0 = Support Crypto Erase (SED only)

Queue entry size is 6.

3-0 0110 = Required Submission

Queue entry size is 6.

Queue entry size is 4.

3-0 0100 = Required Completion

Queue entry size is 4.

515:514 Maximum Outstanding Com-

mands (MAXCMD)

519:516 Number of Namespaces (NN) 1h Supporting one Namespace

521:520 Optional NVM Command Sup-

port (ONCS)

523:522 Fused Operation Support

(FUSES)

524 Format NVM Attributes (FNA) Non-SED: 0h

525 Volatile Write Cache (VWC) 7h 7-1 Reserved

5Fh 15-7 Reserved

5 0 = Reservations are not sup-

ported.

4 1 = Save field in the Set Fea-

tures command and the Select field in the Get Features command are supported.

3 1 = Write Zero command is

not supported.

2 1 = Dataset Management

command is supported.

1 1 = Write Uncorrectable com-

mand is supported.

0 1 = Compare command is not

supported.

SED: 4h

0 1 = Volatile write cache is

present.

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Supported NVMe Commands and Features

Table 14-6. NVM Command Set Attributes (Continued)

Bytes Field Value Comments

527:526 Atomic Write Unit Normal

(AWUN)

529:528 Atomic Write Unit Power Fail

(AWUPF)

530 NVM Vendor Specific Com-

mand Configuration (NVSCC)

531 Reserved 0h

533:532 Atomic Compare and Write

Unit (ACWU)

535:534 Reserved 0h

539:536 SGL Support (SGLS) 0h

767:540 Reserved 0h

1023:768 NVM Subsystem NVMe Quali-

fied Name (SUBNQN)

1791:1024 Reserved 0h

2047:1792 NVMe over fabric identify. 0h

Table 14-7. Power State Descriptors

Bytes Field Value Comments

1h 7-1 Reserved

0 1 = All NVM Vendor Specific

Commands use the format defined in NVMe standard for Vendor Specific commands.

2079:2048 Power State 0 Descriptor

(PSD0)

MP 256GB:1F4 MP 512GB:226 MP 1024GB:258 MXPS: 0 NOPS: 0 ENLAT: 0 EXLAT: 0 RRT: 0 RRL: 0 RWT: 0 RWL: 0 IDLP: 0h IPS: 00b ACTP: 000h APW: 000b APS: 00b

255-184 Reserved 183-182 Active Power Scale (APS) 181-179 Reserved 178-176 Active Power Workload

(APW) 175-160 Active Power (ACTP) 159-152 Reserved 151-150 Idle Power Scale (IPS) 149-144 Reserved 143-128 Idle Power (IDLP) 127-125 Reserved 124-120 Relative Write Latency

(RWL) 119-117 Reserved 116-112 Relative Write Throughout 111-109 Reserved 108-104 Relative Read Latency (RRL) 103-101 Reserved 100-96 Relative Read Throughput

(RRT) 95-64 Exit Latency (EXLAT) 63-32 Entry Latency (ENLAT) 31-26 Reserved 25 Non-Operational State

(NOPS) 24 Max Power Scale (MXPS) 23-16 Reserved 15-00 Maximum Power (MP)

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Supported NVMe Commands and Features

Table 14-7. Power State Descriptors (Continued)

Bytes Field Value Comments

2111-2080 Power State 1 Descriptor (PSD1) MP:15Eh

2143-2112 Power State 2 Descriptor

(PSD2)

MXPS: 0b NOPS: 0b ENLAT: 0h EXLAT: 0h RRT: 0001b RRL: 0001b RWT: 0001b RWL: 0001b IDLP: 0h IPS: 00b ACTP: 0h APW: 000b APS: 00b

MP: 12Ch MXPS: 0b NOPS: 0b ENLAT: 0b EXLAT: 0b RRT: 0010b RRL: 0010b RWT: 0010b RWL: 0010b IDLP: 0h IPS: 00b ACTP: 0h APW: 000b APS: 00b