Carat 9690SA-4I4E Fascicule

Page de 2
3ware® 9690SA 
High-Performance Serial Attached SCSI (SAS) RAID Controller 
Product Brief
LSI 3ware 9690SA
K E Y   F E A T U R E S
   Scalable to 128 SAS and/or 
Serial ATA devices 
   PCI Express x8 host interface
   Configuration flexibility with four 
configuration options 
– 8 internal ports   
– 8 external ports  
– 4 internal/four external ports  
– 4 internal ports
   SAS, SATA, and SATA II features, including 
3Gb/s and NCQ
   512MB DDR2 533 ECC protected memory
   Simultaneous double parity generation 
to maximize RAID 6 performance
   StorSwitch™ 8th generation non-blocking 
switch fabric for maximum controller  
   StreamFusion optimizes I/O accesses to 
maximize application performance under  
 heavy workloads
   StorSave BBU with write journaling
  optimizes data protection and 
  performance; remote battery support
   Low-profile form factor
   RAID levels 0, 1, 5, 6, 10, 50, and
  Single Disk 
It’s Time for SAS
3ware pioneered the way for SATA and now 
capitalizes on time-proven serial storage 
expertise to take users from parallel SCSI to 
SAS.  The 9690SA seizes the moment to enter 
the market just as SAS hard drives, expanders 
and backplanes are more widely available and 
as enterprise infrastructures align to realize the 
potential of Serial Attached SCSI. As SAS makes 
inroads into the SCSI market, users will look 
to SAS to provide expanded connectivity and 
greater scalability and to the 3ware 9690SA for 
peace of mind.
Connect, Expand, Protect with SAS
End users will enjoy configuration flexibility 
with four low profile PCI Express controller  
options: eight internal ports, eight external 
ports, four internal/four external ports, or four 
internal ports. Compatibility with industry  
standard SAS  expanders will maximize  
flexibility. Each 9690SA SAS controller scales  
to support 128 SAS and/or SATA devices.  
Advanced 3ware RAID architecture and SAS, 
SATA, and SATA II performance features, includ-
ing 3Gb/s and NCQ, help rocket the 9690SA to 
RAID 5 and RAID 6 performance heights.  An 
optional Battery Backup Unit with integrated 
write journaling and remote battery mounting 
capability provides added data protection in the 
event of a power outage.  The 9690SA supports 
RAID levels 0, 1, 5, 6, 10, 50, and Single Disk.
The RAID 6 Difference
RAID 6 eliminates the risk of data loss if a second 
hard disk drive fails while the RAID array is 
rebuilding. Uniquely, in the 3ware RAID 6  
implementation, two sets of parity are simulta-
neously calculated, written, and rotated across 
all the drives. This second parity calculation 
enables the array to survive up to two drive  
failures without losing data, significantly  
improving fault tolerance. The 3ware RAID 6 
double parity algorithm maximizes RAID 6 
throughput, so that the 9690SA controllers 
deliver unequaled RAID 6 write performance.
Enterprise-class RAID Storage
SAS is the preferred interface for the direct-
attach server space, SCSI’s former mainstay.  
SAS is for mission critical applications that 
require higher levels of availability and native 
expansion.  SAS is optimized for the random 
performance requirements of the data  
center. The 9690SA’s advanced RAID features,  
SAS connectivity, and powerful 3ware  
performance architecture make it the ideal  
SCSI controller replacement. 
The LSI 3ware 9690SA SAS/SATA hardware RAID controllers deliver indus-
try-leading RAID 6 and RAID 5 performance, expanded scalability, robust 
fault tolerance, and multi-terabyte capacities. A PCI Express host interface, 
StorSwitch™ architecture and sophisticated SAS and SATA II features drive 
this unrivaled performance.
Block 10
Block 7
Block 4
P1 Parity
Disk #1 
Block 11
Block 8
P2 Parity
Q1 Parity
Disk #2
Block 12
P3 Parity
Q2 Parity
Block 1
Disk #3
Q4 Parity
Block 9
Block 6
Block 3
Disk #5
Striped Data with Distributed Double Parity — RAID 6
Host Data 
P4 Parity
Q3 Parity
Block 5
Block 2
Disk #4
RAID 6:  Two sets of parity data, P + Q, are 
striped across disks. RAID 6 safeguards against 
data loss during rebuild mode by allowing up 
to two consecutive drive failures for maximum 
fault tolerance.