SAS 1.0/1.1 SAS 2.0
Features
Preserves legacy SCSI
SATA compatible
3 Gb/s compatible
Improved signaling
Zoning management
Improved scalability
Storage Features
RAID 6
Small form factors
HPC
High capacity SAS drives
Ultra320 SCSI replacement
Choice: SATA or SAS
Blade servers
RAS (Data Protection)
Security (FDE)
Clustering
Larger Topologies
SSDs
Virtualization
External Storage
4K sector size
Line Rate and Cable Throughput 4 x 3 Gb/s (1.2 GB/s) 4 x 6 Gb/s (2.4 GB/s)
Cable Type
Copper Copper
Cable Length
8 m 10 m

MegaRAID 9210-8i

LSI’s second LSI 6 Gb/s card, the 9210-8i, is a host processor-driven HBA rather than a dedicated hardware storage controller. This is a simple RAID 0/1/0+1 card that offers slightly higher throughput using all of our 16 Intel X25-E flash SSDs. However, its I/O performance varies depending on CPU performance.

Unfortunately, the 9210-8i was not listed on LSI’s Web site when we completed this article, so there isn’t much we can say about it except that it also uses x8 PCI Express 2.0 and has eight internal ports located on two mini-SAS connectors.

Other SAS 6 Gb/s HBAs or RAID controllers have yet to arrive at our storage test lab, although storage experts such as Adaptec, Areca, Atto, and others are working on it.

The product situation is similar on the drive side. We’ve only received a few SAS 6 Gb/s drives from Seagate and one from Hitachi. No one else has provided any SAS 6 Gb/s hardware yet, but we know Fujitsu will follow soon. We’ll mention important performance data for the drives presented on this page, but save the full results for a forthcoming enterprise hard drive roundup.

  capacities     cache memory  interface    
Hitachi Ultrastar C10K300 147GB and 300GB 10,000 RPM,  2.5” 64MB SAS 2.0 6.0Gb/s enterprise

Savvio 15K.2 147, 73GB 15,000 RPM 2.5” 16MB SAS 2.0 6.0Gb/s  ST9146852SS
ST973452SS
Savvio 10K.3 300, 146GB 10,000 RPM  2.5” 16MB SAS 2.0 6.0Gb/s ST9300603SS
ST9146803SS
Cheetah 15K.7  600, 450, 300GB 15,000 RPM 3.5” 16MB SAS 2.0 6.0Gb/s  
Cheetah NS.2 600, 450, 300GB 10,000 RPM 3.5” 16MB SAS 2.0 6.0Gb/s low-power
Savvio 15K 72, 36GB 15,000 RPM  2.5” 16MB SAS 3Gb/s    
Cheetah 15K.6 450, 300, 146GB 15,000 RPM 3.5” 16MB SAS 3Gb/s    
Cheetah 15K.5 300 146.8 73.4 15,000 RPM 3.5” 16MB SAS 3Gb/s