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Written by Olin Coles   
Tuesday, 28 June 2011
Table of Contents: Page Index
ADATA S511 Solid State Drive AS511S3
Closer Look: ADATA S511 SSD
SandForce SF-2281 SSD Controller
Features and Specifications
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
EVEREST Disk Benchmark
PCMark Vantage HDD Tests
ADATA S511 SSD Conclusion

SandForce SF-2200 Features

Endurance and Longevity
As each generation of flash memory evolves and the silicon geometries shrink - performance, reliability, endurance, and data retention are negatively impacted. DuraWrite technology extends the life of the SSD over conventional controllers, by optimizing writes to the flash memory and delivering a write amplification below 1, without complex DRAM caching requirements.

Performance and Power Optimization
SSDs are capable of significantly outperforming traditional HDDs, but typical controllers haven't delivered the compelling value necessary for mainstream adoption. SandForce DuraClass technology enables the SSD to maximize both the endurance and performance for the life of the drive fulfilling the promise of high speed flash memory in client computing applications and improving system performance by up to 50% as measured by the SYSmark Benchmark.

Mobile Computing Security
The SF-2200 series has built in AES-256 bit double encryption controllable by a configurable user password. This feature prevents would-be thieves from extracting data directly from the flash memory should they ever have access to the drive.

Data Protection and Reliability
SF-2200 SSD Processors provide up to 100x greater data protection than today's SSDs, and leading enterprise HDDs. This is a result of superior ECC protection and unique RAISE (Redundant Array of Independent Silicon Elements) technology. RAISE provides the protection and reliability of RAID on a single drive without the significant write overhead.

SF-2281/S511 Specifications

DuraClass Technology:

  • DuraWrite extends the endurance of SSDs
  • Intelligent Block Management and Wear Leveling
  • Intelligent Read Disturb Management
  • Intelligent "Recycling" for advanced free space management
  • RAISE (Redundant Array of Independent Silicon Elements)
  • Intelligent Data Retention optimization
  • Best-in-Class ECC protection for longest data retention and drive life
  • Power/Performance Balancing

Host Interface:

  • SATA 3.0 Compliant, 6.0 Gb/s support
  • Native Command Queuing (up to 32 commands)
  • SMART Command Transport (basic)

Capacity Supported:

  • $155 60GB: AS511S3-60GM-C
  • $240 120GB: AS511S3-120GM-C
  • $520 240GB: AS511S3-240GM-C

Performance (sustained):

  • Sequential Read Transfer: Up to 550 MB/s (60-240GB models)
  • Sequential Write Transfer: Up to 510 MB/s (120GB model)
  • Random 4K IOPS: 60,000

Flash Memory Support:

  • 30/20 nm MLC
  • Asynch/Toggle/ONFi2 interfaces
  • Up to 166MT
  • Binary user capacity points (RAISE off mode)

Power Consumption:

  • Typical: 4.7W Operational
  • Sleep/Slumber: 60mW

Security:

  • Data Encryption: TCG OPAL with AES-256/128 and double encryption
  • Optional disk password

Protection:

  • Enhanced ECC with BCH and 55 bits/512 byte sector
  • Unrecoverable Read Errors: Less than 1 sector per 1016 bits read

Reliability:

  • MTTF: 1,000,000 operating hours
  • Supports 5-year consumer life cycle (ADATA 3-year warranty)

Operating Temperature:

0°C to 55°C ambient

Package:

256-pin BGA in 14x14mm @ 0.80mm pitch

Compliance:

RoHS, Halogen-Free, Green

Source: ADATA and SandForce



 

Comments 

 
# RE: ADATA S511 Solid State Drive AS511S3Neuromancer 2011-07-20 17:20
"SandForce claims that the 2200 series has a 0% minimum over-provisioning improvement, which could open up additional storage space if the remaining capacity made it necessary to complete a write cycle."

The second half of that sentence is not a logical conclusion to the first. If something has 0% improvement, it means it has not improved at all. It does not facilitate a declaration it is the same technology although that is usually the case.
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# RE: RE: ADATA S511 Solid State Drive AS511S3Olin Coles 2011-07-20 21:15
You're reading it wrong. SandForce SSDs previously had a 7% or more over-provisioning, and now they offer SSDs with 0% over-provisioning, which is an improvement.
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# No your reading it wrongNeuromancer 2011-07-20 22:28
I am not reading it wrong, it was structured comfusing for hte simple. 9% change means nothing changed.

As a matter of cat I have a MAX IOPS drive up for review as I type. And guess what.

One NAND chips worth of data density was set aside for OP and EC. 16 times 16GB = 256 GB not 240...


Only trying to help.
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# I cant typeNeuromancer 2011-07-20 22:29
And apparently my spell checker is changing het subject for me :P
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# RE: ADATA S511 Solid State Drive AS511S3Neuromancer 2011-07-20 17:22
*edit also it means it has not decreased at all. (sorry that explains the logic in the PC community that nothing changed architecturally, it neither improved nor degraded).
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