E2128J Solutions comparing to HDPro
March 31st, 2009 first release
The HDPro is one implementation of many PCIe-over-Cable solutions.
We have been asked by customers many times that how a JBOD + RAID controller solution would compare to the HDPro solution, and here it is.
.
| HDPro | E2128J + ARC-1680X | E2128J Benefits |
Number of Disks |
8 disks
Lost 1/8 capacity in RAID-5
Lost 2/8 capacity in RAID-6 |
12 disks
Lost only 1/12 capacity in RAID-5
Lost only 2/12 capacity in RAID-6 |
More capacity available
Extra disk spindles give better sustained transfer rate, especially when accessing data stored on the inner tracks of the disks.
Better % capacity utilization & economy |
Type of Disk |
SATA II Only
|
SAS or SATA II disk.
|
10K or 15K rpm SAS disks can be used for even higher sustained transfer rate or much higher random IO (IOPS) |
Performance
| RAID-0 Read: 407MB/sec Write: 400MB/sec
RAID-5 Read: 400MB/sec Write: 331MB/sec
RAID-6 Read: 388MB/sec Write: 259MB/sec | RAID-0 Read: 680MB/sec Write: 799MB/sec
RAID-5 Read: 665MB/sec Write: 645MB/sec
RAID-6 Read: 677MB/sec Write: 634MB/sec |
E2128J + ARC-1680X is just Simply Faster |
Capacity Expansion |
Must use expensive PCI-e Switch to connect to extra box |
1 OUT Port for multiple boxes chaining without any other extra hardware |
Easy and low-cost to scale up No need to use expensive switch |
RAID Adapter |
Proprietary |
Broad selection from open market: Areca, LSI, Intel, Adaptec, ATTO, 3Ware, etc |
Freedom to pick the best suitable RAID adapter for user’s application. |
Applications |
Focus on HD Video Applications |
Both HD Video Application and IT Applications. |
With combination of SAS RAID Adapter, E2128J is suitable for all kinds of applications |
Disclaimer:
#1: The author has tried his best efforts to be as much accurate as possible based on publically available information at the time this paper is published. No private or confidential information is use. If there is any error and/or mistake contained in this paper, it is purely unintentional and accidental. The author is not responsible for the results due to future changes in hardware, firmware, software, components. Also, the author does not imply or express any quality issue against HDPro.
#2: Benchmark ran on E2128 is different from the Benchmark ran on HDPro.
For how HDPro runs its benchmark, please visit: http://www.caldigit.com/HDPro/hdpro_performance.html
For how E2128J runs its benchmark, please visit: http://123raid.com/e2128J_doc.aspx
#3: If any one finds this paper contains inaccurate or un-true statements, please contact us, and we will correct it ASAP.