Adaptec Serial Attached SCSI End User Manual page 7

Putting Serial Attached SCSI to Work for You Putting Serial Attached SCSI to Work for You
Solutions
1. High-Performance Internal Direct Attached Storage (DAS)
Application: High-availability, high-reliability internal storage for workstations and
servers
This solution uses a SAS RAID HBA with either internally connected point-to-point
drives, or using a four-drive-bay, 5.25" internal enclosure, and is ideally suited for:
• Applications that require high availability through mirroring
• High-reliability solutions through the use of SAS drives
• High-performance demands that can take advantage of SAS throughput
• Applications that require point-to-point connections within the server chassis with
simplified cabling
• CAD/CAM/CAE or modeling applications
• Small capacity databases
• Workstation-based video and audio capture and editing
3.5" or 2.5" drive bays
SAS/SATA JBOD
12C
CDROM & LEDS
Solution Elements:
Servers
SAS RAID HBA
External or internal SAS/SATA hard drives or internal four-drive chassis with disk drives
2. High-Performance, Highly-Available, and Scalable DAS
Application: Easy scalability for databases and other continually growing datasets
As illustrated, this solution combines the highest performance, highest availability though
a comprehensive RAID set, and highest scalability available for direct attached storage
(DAS). In this example an 8-port RAID HBA is used. In its simplest form, an internal
four 3.5"drive 5.25" chassis can also be used with the HBA, for storage requirements
internal to the server. For higher capacity needs, a SAS external JBOD enclosure can be
connected to the HBA.
SAS provides higher scalability than the existing SCSI standard and is similar to Fibre
Channel. Simply daisy chain JBODs to the RAID card to add capacity.
With the external enclosure and SAS drives, this solution is ideal for enterprise-class
primary storage applications with high availability needs, including data warehousing,
databases, and decision support, in any demanding application environment.
S A S
Internal hot-swap
backplane
4x internal cable
SAS HBA or
ASIC on MB
E N D - U S E R G U I D E
7
Server
12C