PM8031 Tachyon QE8e+
Quad-Channel 8 Gbps Fibre Channel Controller
with Encryption at Full Line Rate
Preliminary Product Brief
The QE8e+ provides bi-directional encryption/decryption capabil-
ities at a full 8 Gbps line rate with 400K unique Data Encryption
Keys per second on each port. The Flexible key management of
the QE8e+ supports 1 million Data Encryption Keys (DEK) per port
and 8 Key Encryption Keys (KEK) per port. Similar to DIF, DEKs
may be defined on a per I/O (SEST) or a per L/A basis.
Product Overview
The PM8031 Tachyon QE8e+ device is an IEEE 1619 compliant,
high-performance 4-port, 8 Gbps Fibre Channel controller. It
features an 8-lane native PCI-Express Gen-II link, enabling full-
duplex operation simultaneously on all ports. The Tachyon QE8e+
is capable of performing 1.6 million IOPS, making it an ideal
integrated single chip solution for a variety of high-performance
I/O applications.
The Tachyon QE8e+ is designed to be certifiable to the FIPS 140-2
Level 3 standard. The Data encryption uses the XTS-AES
algorithm, as defined by the IEEE 1619 standard, and the NIST
approved AES Key Wrap algorithm is used to secure the data keys.
The QE8e+ features combined 64 Gbps full duplex capabilities on
its 4 FC ports. Up to 4 processors per FC link are supported,
allowing systems to scale to required performance, as needed.
Product Highlights
• 4-port 8/4/2 Gbps Fibre Channel controller
The 1.6M IOPS capability of the QE8e+ is compatible with the
Tachyon programming model at the register level, and also with
the Tachyon Software Development Kit (TSDK) API tools. It
features Multi-DMA, advanced frame-handling functions, and T10
DIF provides robust CRC-based data protection.
• Supports 10 Km distance per link at 8G link rate without
external memory
• Native PCI-Express 2.0 8-lane Gen-II 5-Gbit Host Interface
• Multiple Outbound PCIe read requests
Tachyon StorClad technology delivers unparalleled encryption
performance for Fibre Channel storage products. It utilizes
standards-based encryption algorithms and security practices
assuring vendors of FIPS-certifiable solutions when implemented
with StorClad enabled products.
• Full duplex operation for each port
• Fibre Channel auto-speed negotiation
• Virtualization support with H/W assisted FC Frame Steering
• Support for up to 4 processors per FC Link
• T10 Data Integrity Field protection (T10 DIF)
• Multi-DMA for cache mirroring
• SCSI BiDi command assist
• Enhanced TRE for higher performance on small data transfers
Block Diagram
• CRC offload engine for enabling non-T10 DIF compliant
solutions
PCI Express 2.0 Gen-2x8 Interface
2
8
1
• ERQ/SCSI LL priority control for additional Quality of Service
control
• TWI control and presence detect for optical transceivers
PCI Express Core
• Platform-independent software development API tools
including sample code for Linux, and Windows
Tachyon Expressway
• Standard and RoHS compliant packages
• Industry-leading technical support and documentation
Port 1
Port 2
Port 3
Port 4
Data Integrity Features
• Variable block size support: 512/520 bytes
• I/O level T10 DIF support
T10 DIF
T10 DIF
T10 DIF
T10 DIF
XTS-AES
XTS-AES
XTS-AES
XTS-AES
• CRC Offload Engine (COE)
• T10 DIF per L/A (DPL)
Encryption Features
8Gb FC
8Gb FC
8Gb FC
8Gb FC
• IEEE 1619 Draft Standard Architecture for Encrypted Shared
Storage Media, XTS-AES 256-bit data-at-rest encryption
• FIPS-140-2, Levels 1-3 certifiable
• NIST AES Key Wrap, 8 programmable Key Encryption Keys (KEK)
• 1M Data Encryption Keys (DEK) per port
• 400K encrypted IOPS/port
PMC-2061613, Issue 4
© Copyright PMC-Sierra, Inc. 2008
All rights reserved. Proprietary and Confidential to PMC-Sierra, Inc. and for its customers’ internal use.
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