Buy DAS Array (RAID/JBOD)
DAS-RAID Storage Array w/Fibre Host (SAN Ready) DAS-RAID Storage Array w/SAS Host DAS-JBOD Storage Expander w/SAS Host DAS-RAID Storage Array w/SCSI Host
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Performance:

Host Channel Bandwidth: 4G Bits/s
Disk Channel Bandwidth (SATA/SAS): 3G Bits/s
Topology: Shared, Token-Ring/Shared Bus


  • Throughput (Sequential): RAID-5 or 10:
    • Single Channel: 400 MB/sec
    • Dual* Channel : 800 MB/sec
  • IOPS (Sequential):
    • RAID-5 Read: 34,000+
    • RAID-5 Write: 30,000+

Note:


  • It support port aggregation* (max two), back at OS/Driver level through software RAID.
  • RAID-10 IOPS will more than double the performance of RAID-5

Bus Bandwidth: 12G Bits/s
Disk Channel Bandwidth (SATA/SAS): 3G Bits/s
Topology: Serial, Point to Point


  • Throughput (Sequential): RAID-5 or 10
    • 800 MB/sec
  • IOPS (Sequential):
    • RAID-5 Read: 34,000+
    • RAID-5 Write: 30,000+

Note:


  • SAS uses Wide Ports, Scalable Bandwidth. It is point to point at 300MB/s and Full Duplex. SAS implements wide lanes at the port layer and is transparent to the driver level.
  • RAID-10 IOPS will more than double the performance of RAID-5

Bus Bandwidth: 3.2G Bits/s
Disk Channel Bandwidth (SATA/SCSI): 3G Bits/s
Topology: Parallel


  • Throughput (Sequential): RAID-5 or 10
    • 320 MB/sec

Note:


  • SCSI uses Wide Ports, Scalable Bandwidth.
  • RAID-10 IOPS will more than double the performance of RAID-5
Expansion:
  • One 4x mini SAS port for JBOD Expander.
  • Daisy-Chain Up to 3 JBOD (3 x 16 = 48 disks) Expanders.
  • One 4x mini SAS port for JBOD Expander.
  • Daisy-Chain Up to 3 JBOD (3 x 16 = 48 disks) Expanders.
  • Each JBOD Extender w/ 16 drives
  • Host Server would require RAID PCie HBA
  • Attach up to 3 (48 disk drives) additional JBOD’s Extenders. Total drives supported by DAS + 3x JBOD = 64 Drives.
  • One 4x mini SAS port for JBOD Expander.
  • Daisy-Chain Up to 3 JBOD (3 x 16 = 48 disks) Expanders.
Scalability: Usage of Fibre interface allows utilizing SAN Capabilities for host connectivity and enterprise grade scalability; recommended for scalability ( large deployments). Usage of SAS interface is only recommended when higher transfer rate than Fibre is desired such as high performance database. SAS is expandable but not scalable. SAS or/and SATA Drives Support. Usage of SCSI interface is not recommended as SAS is a better option with higher transfer rate.
Disk per Box: 16 x 3.5” SAS or SATA-2 ; Supports 1TB SATA-2 Disks 16 x 3.5” SAS or SATA-2 ; Supports 1TB SATA-2 Disks 16 x 3.5” SAS or SATA-2 ; Supports 1TB SATA-2 Disks 16 x 3.5” SAS or SATA-2 ; Supports 1TB SATA-2 Disks
Specifications:
  • Operating System: Platform Independent
  • RAID Controller:
    • 2x 4G Bits/s Fibre Port + 1 x Mini-SAS
    • 2GB Cache w/Battery Backup
Model: SD250-3F SD250-33 SD250-3 3163SA
MSRP: $ 7,649 (Disks Extra) $ 6,849 (Disks Extra) $ 3,499 (Disks Extra) $ 5,849 (Disks Extra)