SanDisk USSD 5000 Manual de usuario

SanDisk uSSDTM 5000 Solid State Drive

Product Manual

Revision 0.3

April 2007

SanDisk Corporation

Corporate Headquarters • 601 McCarthy Blvd. • Milpitas, CA 95035

Phone (408) 801-1000 • Fax (408) 801-8657

www.sandisk.com

SanDisk uSSD 5000 Product Manual

Table of Contents

1.Introduction ........................................................................................ 3

1.1General Description....................................................................... 3

1.1.1Applications ...............................................................3

1.1.2Rugged and Reliable....................................................3

1.1.3High Performance .......................................................3

1.1.4Cost Effective.............................................................3

1.2Features...................................................................................... 4

1.3Scope ......................................................................................... 5

1.3.1Technology Independence............................................5

1.3.2Defect and Error Management ......................................5

1.3.3Wear-leveling.............................................................5

1.3.4Bad Block Management................................................5

2.Product Specifications ......................................................................... 6

2.1Formatted Capacities..................................................................... 6

2.2System Environmental Specifications............................................... 6

2.3System Power Requirements .......................................................... 7

2.4System Performance ..................................................................... 7

2.5System Reliability ......................................................................... 7

2.5.1MTTF.........................................................................8

2.6Endurance ................................................................................... 9

2.7Electrical Interface........................................................................ 9

2.7.1uSSD Connector .........................................................9

2.7.2Electrical Specifications.............................................. 10

2.8Physical Specifications..................................................................11

2.8.1uSSD-to-USB Adapter................................................ 12

2.9Product Markings and Traceability ..................................................12

2.10OS Support.................................................................................13

2.11Regulatory Compliance.................................................................13

Appendix A.Ordering Information ..................................................... 14

Appendix B.Limited Warranty............................................................ 15

Appendix C.Disclaimer of Liability..................................................... 17

SanDisk uSSD 5000 Product Manual

List of Tables

Table 1: Formatted Capacities................................................................. 6

Table 2: Environmental Specifications ...................................................... 6

Table 3: Power Requirements.................................................................. 7

Table 4: Performance............................................................................. 7

Table 5: Reliability................................................................................. 8

Table 6: uSSD MTTF .............................................................................. 8

Table 7: Endurance................................................................................ 9

Table 8: Host Interface 2x5 On-Board Header ........................................... 9

Table 9: Absolute Maximum Ratings....................................................... 10

Table 10: DC Characteristics for Full-Speed Operation (TA = 25°C) ............ 10

Table 11: DC Characteristics for High-Speed Operation (TA = 25°C)........... 10

Table 12: Physical Dimensions .............................................................. 11

Table 13: OS Support .......................................................................... 13

Table 14: Ordering Information ............................................................. 14

SanDisk uSSD 5000 Product Manual

1. Introduction

1.1 General Description

The SanDisk uSSDTM 5000 Solid State Drive (uSSD) takes the benefits of flash

storage to new markets with low-capacity storage requirements, most notably

the low-cost PC (LCPC). Rugged and reliable, it is a fraction of the size and

cost of a hard disk drive (HDD) in the 1 to 8 GB range. SanDisk adds high

performance to the uSSD offering, with an advanced controller that

exemplifies the company’s years of USB expertise.

1.1.1 Applications

The SanDisk uSSD offers a no-compromise flash-based storage solution for:

•LCPCs that need rugged reliability and require up to 4 GB storage. The

uSSD can meet these requirements more cost-effectively than an HDD.

•Desktops that support Microsoft® Vista and can benefit from enabling

ReadyBoost®.

•Point of sale (POS) stations, where the uSSD replaces the HDD.

•Blade servers, where the uSSD is ideal to store critical backup files and

provide boot functionality.

1.1.2 Rugged and Reliable

Unlike the HDD, the SanDisk uSSD has no moving parts. It keeps working in

challenging environments such as classrooms, kiosks and in space-restricted

server racks. The patented flash management technology brings top data

integrity to the uSSD, even during power losses. Dynamic bad block

management, dynamic and static wear-leveling, and robust error detection

and correction code (EDC/ECC) ensure data reliability.

1.1.3 High Performance

The uSSD achieves a sustained read speed as high as 31.6 MB/sec and a

sustained write speed of up to 24.8 MB/sec with single-level cell (SLC)

technology.

1.1.4 Cost Effective

There is no need to pay for more capacity than you require. The uSSD lets you

purchase just the right amount of storage, packed inside a memory device

that’s 4 times smaller than a 1.8” HDD. It offers you the choice of single-level

cell (SLC) flash technology or the more cost-effective multi-level cell (MLC)

technology.

SanDisk uSSD 5000 Product Manual

1.2 Features

The SanDisk uSSD 5000 provides the following system features:

•Non-volatile storage (no battery required)

•USB 2.0 interface, certified by the USB organization

•Complies with Microsoft Vista ReadyBoost® requirements

•Up to 8 GB of mass storage based on SanDisk’s reliable flash technology

•SLC flash and MLC flash-based configurations

•Fixed configuration (not removable)

•Low power consumption

•High performance:

Sustained Read and write speed of up to 31.6 MB/sec for reading,

24.8 MB/sec for writing (SLC configuration)

•Rugged

•Lightweight

•Silent

•Standard and low profile

•Advanced error detection and error correction algorithms

•Advanced wear-leveling algorithms

•Guaranteed data integrity even after power loss

•MTTF* > 4,000,000 hours

•Multiple OS support

•Warranty: 3 years

* Based on internal testing. The MTTF calculation does not take into account the disk endurance

limitation. For the disk endurance, please refer to the endurance section on page 9.

SanDisk uSSD 5000 Product Manual

1.3 Scope

This document describes the key features and specifications of the uSSD 5000,

as well as the information required to interface this product to a host system.

1.3.1 Technology Independence

To write or read a sector (or multiple sectors), the host computer software

simply issues a Read or Write command to the module.

This command contains the address and the number of sectors to write/read.

The host software then waits for the command to be completed.

The host software does not participate in the details of how the flash memory

is erased, programmed or read. This is extremely important as flash devices

are expected to increase in complexity in the future. Because the uSSD 5000

uses an intelligent on-board controller, the host system software will not need

to be changed as new flash memory evolves. As such, systems that support

uSSD 5000 now will be able to access future SanDisk Modules built with new

flash technology without any need to update or change the host software.

1.3.2 Defect and Error Management

The uSSD 5000 contains a sophisticated defect and error management

system.

If necessary, the Module will rewrite data from a defective sector to a good

sector. This is completely transparent to the host and does not consume any

user data space.

The uSSD 5000 soft error rate specification is much better than the magnetic

disk drive specification.

In the extremely rare case that a read error does occur, the uSSD 5000 has

innovative algorithms to recover the data by using hardware on-the-fly Error

Detection Code/Error Correction Code (EDC/ECC), based on a BCH algorithm.

These defect and error management systems, coupled with solid state

construction, give the SanDisk uSSD 5000 unparalleled reliability.

1.3.3 Wear-leveling

Wear-leveling is an inherent part of the erase-pooling functionality of the

SanDisk uSSD 5000, using NAND memory.

Advanced features of dynamic and static wear-leveling and automatic block

management are used to ensure high data reliability and maximize flash life

expectancy.

1.3.4 Bad Block Management

Bad blocks are occasionally created during the lifecycle of a flash component,

in a phenomenon called dynamic bad block accumulation. These bad blocks

must be dynamically marked and replaced to prevent read/write failures.

When a bad block is detected, the embedded bad block mapping algorithm

maps out the block, which is then no longer used for storage.

SanDisk uSSD 5000 Product Manual

Product Specifications

For all the following specifications, unless otherwise stated, values are defined

at ambient temperature and nominal supply voltage.

2.1 Formatted Capacities

Table 1 shows the formatted capacities for the uSSD 5000:

Table 1: Formatted Capacities

Capacity

[GB] Capacity (formatted

in bytes) Sectors/Module

(Max. LBA+1) No. of

Heads No. of Sectors/

Track No. of

Cylinders

SLC Configurations

1 1024967168 2001889

2 2048901632 4001761

4 4110189056 8027713

8 TBD TBD

MLC Configurations

2 2048901632 4001761

4 4110189056 8027713

8 TBD TBD

2.2 System Environmental Specifications

Table 2 lists the environmental specifications, including temperature, noise

level, vibration, shock and altitude.

Table 2: Environmental Specifications

Specification Parameters

Temperature Operating (Commercial): 0

C to 70

Storage temp without user data retention: -40

C to 85

Storage temp with user data retention: 0

C to 70

Noise Level 0 dB

Vibration Operating: 2.17gRMS (20Hz to 2000Hz, 3 vibration axes, 60 min)

Non operating: 3.08 gRMS (20 Hz to 2000 Hz)

Shock Operating: 50 g, 11 msec duration, half sine

Non operating: 1,500 g, 0.5 msec duration, half sine

Altitude (relative to sea

level) 80,000 ft. maximum

ESD Contact discharge: Up to 4 KV (enclosed in a host)

Air discharge: Up to 8 KV (enclosed in a host)

Flammability ratings for

major components PCB: 888-1 94V0 HK

ASIC Packaging materials: TBD

Flash packaging materials: TBD

Labels: CM-100-SM, CM-200-WS

SanDisk uSSD 5000 Product Manual

2.3 System Power Requirements

All values quoted in Table 3Table 3: Power Requirements

are typical at 25° C and nominal supply voltage unless otherwise stated.

Table 3: Power Requirements

Power Mode 5V +/- 10% IDD

Standby 2.5 mA

Operating HS Read 150 mA

Operating HS Write 150 mA

Idle HS 100 mA

2.4 System Performance

Table 4 lists the performance parameters of the SLC and MLC flash-based

configurations:

Table 4: Performance

Specification Parameters

Maximum performance for capacity of 1 GB (SLC flash configuration)

Sequential Read 31.6 MB/sec

Sequential Write 24.8 MB/sec

Random Read TBD

Random Write TBD

Maximum performance for 2 GB, 4 GB and 8 GB (SLC flash configurations)

Sequential Read 31.6 MB/sec

Sequential Write 24.8 MB/sec

Random Read @ 4KB access 5.7 MB/sec

Random Write @ 4KB access 1.2 MB/sec

Maximum performance 2 GB, 4 GB and 8 GB (MLC configuration)

Sequential Read 29.9 MB/sec

Sequential Write 12.8 - 9.0 MB/sec (based on capacity)

Random Read TBD

Random Write TBD

Host compatibility

USB 2.0 Up to 60 MB/sec

Note: Benchmark performed using HD Bench on

Windows 2000 and Winsat on Microsoft Windows Vista

SanDisk uSSD 5000 Product Manual

2.5 System Reliability

Table 5: Reliability

Specification Parameters

Data Reliability Error detection / error correction based on

BCH algorithm

Data integrity after power loss Data is guaranteed after power loss

Bad blocks Transparent bad block management

Wear-leveling Dynamic and Static Wear-leveling

2.5.1 MTTF

The reliability figure of merit most often used for electronic equipment is Mean

Time To Failure (MTTF). SanDisk estimates MTTF using a prediction

methodology based on reliability data for the individual components in

SanDisk products.

Component data comes from several sources: device life tests, failure analysis

of earlier equipment, device physics, and field returns.

SanDisk uses following methods to predict reliability:

•Telcordia Special Report SR-332, Reliability Prediction Procedure for

Electronic Equipment (RPP).

•British Telecom Industry HRD5, Handbook of Reliability Data for

Electronic Components used in Telecommunication System.

Table 6 summarizes the MTTF prediction results for various uSSD

configurations. The analysis was performed using a RAM Commander™ failure

rate prediction.

•Failure Rate: The total number of failures within an item population,

divided by the total number of life units expended by that population,

during a particular measurement interval under stated condition.

•Mean Time To Failures (MTTF): A basic measure of reliability for

repairable items: The mean number of life units during which all parts of

the item perform within their specified limits, during a particular

measurement interval under stated conditions.

Table 6: uSSD MTTF

Product Condition MTTF (Hours)

1GB, 2GB, 4GB Telcordia SR-332, GB, 25°C 4M

8GB Telcordia SR-332, GB, 25°C 3M

SanDisk uSSD 5000 Product Manual

2.6 Endurance

Table 7 lists the maximum number of GBs that can be written to the uSSD

5000 per day per the SLC and MLC flash-based configurations.

The numbers are derived from the flash capabilities and the 3 year warranty,

which are provided for the product.

•SLC flash based uSSD - User can update the entire device 6 times a

day during 3 years

•MLC flash based uSSD - User can update 25% of the device capacity

every day during 3 years

Table 7: Endurance

Specification SLC Flash-based uSSD MLC Flash-based uSSD

1 GB < 6 GB -

2 GB < 12 GB < 512 MB

4 GB < 24 GB < 1 GB

8 GB < 48 GB < 2 GB

2.7 Electrical Interface

Table 8 lists the host interface on-board header pins and signals.

Table 8: Host Interface 2x5 On-Board Header

Pin Signal Pin Signal

1 +5VDC 2 +5VDC

3 USB1 Data(-) 4 USB2 Data(-)

5 USB1 Data(+) 6 USB2 Data(+)

7 GND 8 GND

9 Key (no pin) 10 NC

2.7.1 uSSD Connector

Figure 1 illustrates the uSSD 2x5 device interface connector:

Figure 1: uSSD 2x5 Connector Pinout

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