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Flexible Configuration Options for
Adaptec Series 8 and Series 7 SAS/SATA RAID Adapters
Use Cases
A 1U server has limited slot space and typically only supports
8 direct attach drive bays. The low-profile Adaptec 8885 and
Adaptec 78165 RAID adapters with Flexible Configuration are
designed specifically for these environments, offering support
for 8 internal drives configured as logical volumes for critical
data. Each adapter also provides external connectivity to JBODs.
These can be configured as raw devices for maximum capacity
cold storage usage — all within an MD2 form-factor.
JBODs
Flexible Configuration is also ideal for expander-based backplane
applications. Whether inside or outside the server chassis,
expander-based backplanes allow for scalability but can introduce
compatibility issues and latency. Series 8 and Series 7 RAID
adapters offer 16- and 24-port direct connectivity options. By
Host Writes
configuring each drive as a simple volume, onboard DRAM can
be used to help accelerate reads/writes. When coupled with
"Big Block Bypass Mode" — a setting available on every Adaptec
RAID adapter which filters large I/Os to the drive and keeps
cache available for small random I/Os — Flexible Configuration
delivers significant gains in random I/O performance.
PMC-Sierra, Inc.
1380 Bordeaux Dr.
Sunnyvale, CA 94089 USA
Tel: +1 (408) 239-8000
© Copyright PMC-Sierra, Inc. 2013. All rights reserved. PMC, PMC-SIERRA and Adaptec are registered trademarks of PMC-Sierra, Inc. "Adaptec by PMC" is a trademark of PMC-Sierra, Inc.
Other product and company names mentioned herein may be trademarks of their respective owners. For a complete list of PMC-Sierra trademarks, see www.pmc-sierra.com/legal.
TB_FlexConfig_S8_071113_US
Information subject to change.
1U 8-Drive Server
Writes > =
Threshold Size
Writes <
Threshold Size
Controller Cache
World Wide Web: www.adaptec.com
Pre-Sales Support: US and Canada: 1 (800) 442-7274 or (408) 957-7274 or adaptecsales@pmcs.com
UK: +44 1276 854 528 or uk_sales@pmcs.com
Australia: +61-2-90116787
Germany: +49-89-45640621 or adaptecsales.germany@pmcs.com
Singapore: +65-92351044
ADAPTEC FLEXIBLE CONFIGURATION
JBODs
Threshold Size
Host Writes
Threshold Size
The Flexible Configuration Advantage
With Flexible Configuration, Adaptec Series 8 (12Gb/s) and
Series 7 (6Gb/s) RAID adapters provide an effective and efficient
hardware investment by allowing data centers to purchase one
SKU and then choose from three configuration profiles to meet
their needs.
Disk Device
T ECHNICA L BR I E F
1U 8-Drive Server
Writes > =
Disk Device
Writes <
Controller Cache
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