Information

X-bit Labs for mobile users! Do not forget that we are running a special version of X-bit Labs web-site for users of mobile and handheld devices: http://pda.xbitlabs.com. Check out our news and articles from smartphones and PDAs to be always updated on the latest computer and technology news.

 

Articles: Storage

Promise FastTrak TX4300 Serial ATA RAID Controller Review (page 8)


Category: Storage

by Alexander Yuriev , Nikita Nikolaichev

[ 10/20/2005 | 04:09 PM ]


Pages : 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15

Performance in Intel IOMeter WorkStation Pattern

Now let’s pass over to WorkStation pattern, which imitates active user work in various applications in NTFS5 file system:

As always here follows the graph showing the dependence of arrays performance on the requests queue depth:

The situation is pretty typical of RAID 0 arrays: the more HDDs are used to build the array, the faster it processes the requests. As for RAID 1 and RAID 10 arrays, they start off with the speeds close to those of RAID 0 arrays made of 2 and 4 HDDs respectively, but as the workload increases, they perform more like a single HDD and a RAID 0 array of 2 HDDs.

Let’s compare the performance of RAID arrays of different types. The ratings for the WorkStation pattern will be calculated according to the formula below:

Performance Rating = Total I/O (queue=1)/1 + Total I/O (queue=2)/2 + Total I/O (queue=4)/4 + Total I/O (queue=8)/8 + Total I/O (queue=16)/16 + Total I/O (queue=32)/32

RAID 0 arrays ranked themselves depending on the number of hard drives used. The performance of RAID 10 array appeared higher than that of RAID 0 array of 2 HDDs. A similar situation occurs between RAID 1 array and a single hard drive.

<<< Previous page Next page >>>

Discussion

Comments currently: 17
Discussion started: 10/21/05
View comments

Add your Comment

Name/Nickname
Your Comments
 

Category News

Category: Storage

Wednesday, July 23, 2008

9:58 pm Western Digital Releases VelociRaptor for Enterprises. WD Launches Enterprise Version of VelociRaptor

12:29 pm SanDisk Blames Windows Vista for Low Performance of Solid State Drives. SanDisk: Vista Is Not Optimized for Flash Memory Solid State Disk

Friday, July 18, 2008

6:03 am Micron and Seagate to Lead Solid State Drive Standardization Efforts at JEDEC. JEDEC Announces Dedicated Subcommittee to Set Standards for SSDs

Friday, July 11, 2008

9:50 pm Seagate Unleashes World's First 1.5TB Hard Disk Drives. Seagate Increases Hard Drive Capacity to 1500GB

Thursday, July 10, 2008

2:03 pm Samsung Starts Volume Production of 128GB Solid State Drives. Samsung Initiates Mass Production of Relatively Affordable 128GB SSDs

 
News Archive
All Latest News