SCSI Express is the robust and proven SCSI protocol combined with PCIe that creates an industry-standard path to PCIe-based storage. SCSI Express combined with SAS-based solutions provides unprecedented performance and low latency that enterprises demand.
Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
Scsi express overview
1. Extending the SCSI Platform
of Innovation
May, 2013
www.scsita.org www.scsiexpress.org
2. SCSI Express Overview
What is SCSI Express?
Proven SCSI protocol combined with PCIe, creating an
industry standard path to PCIe-based storage
Why do we need SCSI Express?
Deliver proven enterprise storage for PCIe-based storage
devices in a standardized ecosystem
Take advantage of lower latency PCIe to improve performance
Unified management and programming interface
May, 2013 2
3. iSCSI
FC
FCoE
Parallel SCSI
SAS
SCSI:
The Most Widely Implemented Logical Storage Protocol
Operates Over Numerous Transport Layers
ATAPI (ATA, SATA)
USB
Memory sticks
Firewire
Infiniband
USB Firewire Parallel
SCSI
3
SCSI is Everywhere!
May, 2013
4. Reliability
Proven enterprise SCSI
ecosystem
Architected for high
availability
Performance and
Innovation
Increased performance
through lower latency for
emerging advanced
technologies
Enables new storage
architectures
Investment
Protection
Coexistence with SAS via
Express Bay and common
command set
Leveraging robust
middleware ecosystem
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SCSI Express Value Proposition
May, 2013
5. Leading server
I/O interconnect
Accommodates
PCIe, SAS
and SATA drives
Flexible, high
performance
queuing layer
Packages SCSI for
a PQI queuing
layer
Storage command set
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SCSI Express Components
May, 2013
6. Server
PCIe Root Complex
O/S and Applications
PCIExpress
SOP-PQI Driver
PCIExpress
Backplane with SFF-8639 connectors
SCSI Express SSDs
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SCSI Express SSD in a Server
May, 2013
7. Express Bay
SFF-8639 multifunction connector
Supports multiple protocols/interfaces
PCI-SIG electrical specification
Up to 25 Watts
Objectives
Preserve the enterprise storage experience for PCI Express storage
Meet SSD performance demands
Serviceable, hot-pluggable Express Bay opens up new possibilities…
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Express Bay Concept
May, 2013
8. SCSI
Express Drive/Device
SOP-PQI protocol
Connects to SFF-8639
PCIe up to x4 interface
SCSI
Express Controllers
Supports SOP-PQI
driver functionality on
the controller to the
target device on
the PCIe lanes
Typically supports
SAS/SATA devices
SCSI
Express Driver
Driver supplied by
storage OEMs, IHVs or
OSVs
Open-source Linux
driver available
CYQ113
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SCSI Express
Hardware/Software
May, 2013
9. SCSI Express Naming
◆ SCSI Express Drive:
SCSI Express SSD
SCSI Express HDD
(SCSIe SSD or HDD)
● A PCIe data storage device using solid-state drive technology in a 2.5” Small
Form Factor (SFF) or 3.5” Large Form Factor (LFF) that utilizes SCSI over
PCIe (SOP) and PCIe Queuing Interface (PCIe) to communicate with the
PCIe bus on the host.
◆ SCSI Express RAID Controller:
● A PCIe controller with Redundant Array of Independent Disks (RAID) fault
tolerance capability that communicates SCSI over PCIe (SOP) and PCIe
Queuing Interface (PCIe) commands to the PCIe bus on the host.
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10. SCSI Express Naming
◆ SCSI Express Card Drive:
SCSI Express SSC
SCSIe SSC
(SSC=Solid State Card)
● A PCIe data storage device using solid-state drive technology in a PCIe card
form factor that utilizes SCSI over PCIe (SOP) and PCIe Queuing Interface
(PCIe) to communicate with the PCIe bus on the host.
◆ SCSI Express M.2 Drive:
SCSI Express SSM
SCSIe SSM
(SSM=Solid State Module)
● A storage device using solid-state drive technology in a M.2 form factor that
utilizes SCSI over PCIe (SOP) and PCIe Queuing Interface (PCIe) to
communicate with the PCIe bus on the host.
www.scsita.orgMay, 2013 10
11. SCSI Express Naming
◆ SCSI Express Bridge:
● A device using that communicates SCSI over PCIe (SOP) and PCIe Queuing
Interface (PCIe) commands downstream to the PCIe bus on the host.
◆ SCSI Express Switch:
● A device which transmits SCSI over PCIe (SOP) and PCIe Queuing Interface
(PCIe) packet commands to and from a host to a SCSI Express device
connected to the switch.
May, 2013 11
12. SCSI Express Naming
◆ SCSI Express Mezzanine Drive:
SCSI Express SSM
(SCSIe SSM)
● A proprietary PCIe data storage device using solid-state drive
technology in a blade mezzanine card form factor that utilizes SCSI
over PCIe (SOP) and PCIe Queuing Interface (PCIe) to communicate
with the PCIe bus on the host.
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14. Targeted for enterprise environments
where low latency and high performance is critical:
● Caching
● Virtualization (VDI)
● High Performance Computing (HPC)
● Complex Algorithm Processing, Simulations and Modeling
● Front-end Web Servers
● Data Warehousing
● …..And much more!!!!
Respond to increasing demands for data
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SCSI Express Target Environments
May, 2013
15. Enterprise PCIe-based storage
Industry standards path
Increased performance through lower latency
Coexistence with SAS via Express Bay
Proven SCSI protocol
Unified management and common command set
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SCSI Express Summary
May, 2013
16. SCSI Express
12Gb/s SAS, 24Gb/s SAS
Performance and scalability
Power Limit Control - up to 25W Devices
Both SAS and SCSI Express
Extended Copy Feature
Atomic Writes
Hinting & other NVM Features
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SCSI – Looking to the Future
May, 2013