STEC | SCSI INTERFACE | Zeus-IOPS SSD, MACH8 SSD, MACH2 SSD Alternative Solutions

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RELATED APPLICATIONS

Enterprise Computing

Communications/Networking

RELATED TECHNOLOGY

Advanced Flash Management

Total Drive Protection

Flash Life Support

Flash Memory Controller

Power Down Recovery

SSD Testing

IC Tower® TSOP Stacking

RELATED PRODUCTS

Zeus^IOPSSolid State Drive

MACH8 Solid State Drive

MACH2 Solid State Drive

SMALL COMPUTER SYSTEM INTERFACE (SCSI) INTERFACE

STEC SCSI Interface for Zeus^IOPS SSD, MACH8 SSD, MACH2 SSD Alternative Products

Small Computer System Interface (SCSI) was the most common interface used on legacy enterprise-class rotating hard drives. While traditional SCSI is a parallel interface, the trend in the storage industry is to serial these interfaces; thus were born Serial-Attached SCSI (SAS) and Serial ATA (SATA).

When the SCSI Trade Association introduced the SAS standard, it was designed to meet the ever-demanding needs of enterprise storage for high performance, high reliability and high manageability. SATA was designed to be the replacement drive interface for the high-volume desktop and mobile markets.

Both SATA and SAS use the same physical and electrical interface, and therefore, SATA drives can be physically connected to SAS host controllers. Because of additional command support, SATA host controllers will not support SAS devices. The three software protocols that can run on top of this interface are:

• Serial SCSI Protocol (SSP) - supports SAS drives
• SATA Tunneling Protocol (STP) - supports SATA drives
• Serial Management Protocol (SMP) - supports SAS expanders

The SAS standard currently supports up to 3Gbit/sec data transfer speeds, with future rates planned for 6Gbit/sec and even 12Gbit/sec at the end of this decade.

Key end-user benefits of the standard include an enterprise-class command set, investment protection in compatible SCSI software and middleware, and the choice of direct-attach storage devices (SAS or SATA). In addition, longer cabling distances, smaller form factors and greater ease of device addressing will all lead to a new level of flexibility. Since SAS is based on the foundation of the industry-leading SCSI specification, it will satisfy users' needs for continuity in mission-critical applications.

SCSI VS. SAS

COMPARISON CHART

SCSI

SAS

SCSI is a parallel interface

SAS is a serial interface with less overhead for higher speeds

SCSI is a multi-drop in the all devices share the same set of wires and share the bandwidth

SAS is a point-to-point interface where each device is connected to a dedicated initiator. Each device has full bandwidth

SCSI uses terminators

SAS has not termination issues

SCSI supports 8, 16, or 32 device per bus

SAS supports 16,384 devices

A SCSI controller supports only SCSI devices

A SAS controller supports both SAS and SATA devices

Maximum bus speed is 320 MB/sec

Currently, SAS supports 3Gb (300 MB/sec) speeds with a roadmap to 6Gb and 12Gb

SCSI ALTERNATIVE / SAS INTERFACE SOLUTIONS

PRODUCT

ZEUS^IOPS SSD

MACH8 SSD

MACH2 SSD

INTERFACE

•	SAS
•	SATA-II
•	Fibre Channel

•	ATA
•	SATA-II

•	ATA
•	SATA 1.0a

APPLICATIONS

•	Enterprise Computing
•	Communications/ Networking

•	Enterprise Computing
•	Communications/ Networking
•	Automotive
•	Embedded/Industrial
•	Military/Aerospace
•	Medical Equipment
•	Casino Gaming
•	Professional Media

•	Communications/ Networking
•	Automotive
•	Embedded/Industrial
•	Casino Gaming

TECHNOLOGY

•	SSD Performance
•	Advanced Flash Management
•	Total Drive Protection
•	Power Down Recovery
•	SSD Testing
•	IC Tower Stacking

•	SSD Performance
•	Advanced Flash Management
•	Total Drive Protection
•	Flash Life Support
•	Flash Memory Controller
•	Power Down Recovery
•	SSD Testing
•	IC Tower Stacking

•	SSD Performance
•	Advanced Flash Management
•	SSD Testing

	READ/WRITE PERFORMANCE
	MB/s
	IOPS


•	220/115
•	46,000/16,000


•	100/100


•	35/25

	POWER CONSUMPTION
	Sleep/Idle Mode
	Operating Mode


•	5.4W
•	8.4W


•	0.5mW
•	2.1W


•	0.1W
•	0.3W

CAPACITY

•	Up to 512GB

•	Up to 512GB

•	Up to 16GB

FORM FACTOR

•	3.5"
•	2.5"

•	3.5"
•	2.5"

•	2.5"
•	1.8"

•	View Product Specifications

•	View Product Specifications

•	View Product Specifications

WHY SCSI ALTERNATIVES?

Zeus^IOPS SSD

MACH8 SSD

MACH2 SSD

ZEUS^IOPS SSD

STEC Zeus^IOPS Solid State Drives are elite high performance advanced data storage solutions. Built for speed, the Zeus^IOPS is over two hundred times faster at random I/O than standard disk drives. One Zeus^IOPS drive can replace multiple hard drives or eliminate the need to purchase additional servers to overcome performance bottlenecks, resulting in reduced cost and space requirements.

• Over 200 times faster at random transactional performance than a 15K RPM enterprise hard disk drive
• Lower cost per transaction
• Enables higher performing systems with far less hardware costs
• Low power consumption

MACH8 SSD

STEC MACH8 Solid State Drive is revolutionizing the storage world by delivering to the users the ultimate level of reliability and performance in a fully integrated device.

At the heart of the Mach8 SSD there is STEC's leading edge controller able to address multiple flash chips simultaneously to achieve up to 100MB/s sustainable Read/Write speed.

• Industry leading Solid State Disk
• Non-volatile memory and no moving parts
• Patented Full Data Path Protection
• Sustainable Sequential Read and Write speed up to 100MB/s
• Optional Mach8IOPS version for IOPS hungry applications

MACH2 SSD

The STEC MACH2 family is a new platform of solid state drives offered in different form factors and interfaces. All the MACH2 SSD are equipped with an extremely fast and cost optimized Multi channel controller capable of doubling the performance of flash components.

• Solid State Drive with Parallel ATA and Serial ATA interfaces
• Drop-in replacement for rotating HDD
• Built in Static and Dynamic Wear Leveling
• Industry Standard 1.8", 2.5" form factor
• High Speed Performance: 35MB/s read and 25MB/s write