SanDisk uSSD 500 Solid State Drive User Manual

SanDisk uSSD 500 Solid State Drive User Manual

Introduction

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.

Applications
The SanDisk uSSD offers a no-com prom ise flash-based storage solution for:

• LCPCs need rugged reliability and require up to 4 GB of 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.

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 m anagram ent technology brings top data integrity to the uSSD, even during power losses. Dynamic bad block m anagram ent, dynamic and static wear-leveling, and robust error detection and correction code (EDC/ ECC) ensure data reliability.

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.

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 m em ory 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.

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
• Com plies 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

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.

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 com m and 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 onboard controller, the host system software will not need to be changed as the 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.

Defect and Error Management
The uSSD 5000 contains a sophisticated defect and error message ent the 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.

Wear- leveling

Wear-leveling is an inherent part of the erase-pooling functionality of the SanDisk uSSD 5000, using NAND m em ory. Advanced features of dynamic and static wear-leveling and automatic block management are used to ensure high data reliability and maximize flash life expectancy.

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.

Product Specifications

For all the following specifications, unless otherwise stated, values are defined at ambient temperature and nominal supply voltage.

Form added Capacities
Table 1 shows the formatted capacities for the uSSD 5000:

Table 1: Formatted Capacities

Specifications Table 2 lists the environmental specifications, including temperature, noise level, vibration, shock, and altitude.

Table 2: Environmental Specifications

System Environmental Specifications Table 2 lists the environmental specifications, including temperature, noise level, vibration, shock, and altitude. Table 2: Environmental Specifications

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

System Performance
Table 4 lists the performance param eters of the SLC and MLC flash-based configurations:

Table 4: Performance

System Reliability
Table 5: Reliability

MTTF

The reliability figure of m eastmost often used for electronic equipment is Meantime 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 the 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 sum m arizes the MTTF prediction results for various uSSD configurations. The analysis was performed using a RAM Com m ander™ 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 m easurem ent interval under stated condition.
• Mean Tim e 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

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 for 3 years
• MLC flash-based uSSD – User can update 25% of the device capacity every day for 3 years

Table 7: Endurance

Electrical Specifications

Absolute Maximum Ratings
Table 9: Absolute Maximum Ratings

DC Characteristics
Table 10: DC Characteristics for Full-Speed Operation ( TA = 2 5 ° C)

Table 11: DC Characteristics for High-Speed Operation ( TA = 2 5 ° C)

OS Support

The SSD 5000 is supported under the operating systems listed in Table 13. In the standard boot and storage modes, the uSSD 5000 is recognized as a fixed disk in the system. The system can also boot from the uSSD 5000, eliminating the need for additional components. Software packages for the supported operating systems can be downloaded from the SanDisk website, along with the relevant documentation.

Regulatory Compliance
The uSSD 5000 complies with the following:

• USB Organization certification
• RoHS (6 Materials)
• Chinese RoHS
• FCC Class B for Information Technology
• CE EN 55022/ 55024
• Flamm ability ratings for major components can be found under System Environmental Specifications on page 6.
• WHQL
• Windows Vista ReadyBoost® compliance

Ordering Information

Appendix B. Limited Warranty

Warranty Statement
SanDisk warrants its products to be free of any defects in materials or workmanship that would prevent them from functioning properly for one year from the date of purchase. This express warranty is extended by SanDisk Corporation.

General Provisions
This warranty sets forth the full extent of SanDisk’s responsibilities regarding the SanDisk Module. In satisfaction of its obligations hereunder, SanDisk, at its sole option, will repair, replace, or refund the purchase price of the product.

What this Warranty Covers
For products found to be defective within five years of purchase, SanDisk will have the option of repairing or replacing the defective product, if the following conditions are met:

• A warranty registration Module for each defective product was submitted and is on file at SanDisk. If not, a warranty registration Module must accompany each returned defective product. This Module is included in each product’s original retail package.
• B. The defective product is returned to SanDisk for failure analysis as soon as possible after the failure occurs.
• C. An incident Module filled out by the user, explaining the conditions of usage and the nature of the failure, accompanies each returned defective product.
• D. No evidence is found of abuse or operation of products not in accordance with the published specifications, or of exceeding storage or m axim um ratings or operating conditions.

All failing products returned to SanDisk under the provisions of this limited warranty shall be tested to the product’s functional and performance specifications. Upon confirmation of failure, each product will be analyzed, by whatever means necessary, to determine the root cause of failure. If the root cause of failure is found to be not covered by the above provisions, then the product will be returned to the customer with a report indicating why the failure was not covered under the warranty.

Receiving Warranty Service

According to SanDisk’s warranty procedure, defective products should be returned only with prior authorization from SanDisk Corporation. Please contact SanDisk’s OEM Support Department at 866-436-6073 with the following information: product model number and description, serial numbers, nature of the defect, conditions of use, proof of purchase, and purchase date. If approved, SanDisk will issue a Return Material Authorization or Product Repair Authorization number and provide a shipping address where the defective product can be returned.

Appendix C. Disclaimer of Liability

SanDisk Corporation Policy SanDisk Corporation’s general policy does not recommend the use of its products in life support applications wherein a failure or malfunction of the product may directly threaten life or injury.

Accordingly, in any use of products in life support systems or other applications where failure could cause damage, injury, or loss of life, the products should only be incorporated in systems designed with appropriate redundancy, fault-tolerant, or backup features. SanDisk shall not be liable for any loss, injury, or damage caused by the use of the Products in any of the following applications:

• Special applications such as military-related equipment, nuclear reactor control, and aerospace
• Control devices for automotive vehicles, trains, ships,s and traffic equipment
• Safety system for disaster prevention and crime prevention
• Medical-related equipment including medical measurement devices.

Reference Link

https://bit-tech.net/press-releases/sandisk_ussd_5000_solid_state_drive_will_be_used_in_the_intel-powered_classmate_pc/1/