Solved

RAID 1.0 and Partitioning

Posted on 2006-10-31
10
734 Views
Last Modified: 2010-05-18
Hello

We have a DL380 G4 server. I have created a RAID 1.0 disk configuration on this server ie via hp smart start, I have assigned a partition size for c:\ @ 150 gig. The os is installed here. In disk managment the remaining space is assigned to the d:\ drive which will be used for disk images.

Question: Is there any performance loss in configuring the server in this way?

Thanks

0
Comment
Question by:agha123
  • 2
  • 2
  • 2
  • +2
10 Comments
 
LVL 95

Accepted Solution

by:
Lee W, MVP earned 500 total points
Comment Utility
No there shouldn't be.  If you are using Hardware RAID, you MIGHT see a performance increase (on reads) - writes would not improve.
0
 

Author Comment

by:agha123
Comment Utility
Yes this is hardware RAID
0
 
LVL 87

Expert Comment

by:rindi
Comment Utility
No, with raid one (hardware), there is no performance loss, but also no increase.
0
 
LVL 95

Expert Comment

by:Lee W, MVP
Comment Utility
The performance increase depends on the RAID controller.  If the RAID controller is advanced, it may be able to perform two different reads at the same time, thereby enhancing performance on reads  Or do you disagree rindi?
0
What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

 
LVL 87

Expert Comment

by:rindi
Comment Utility
I don't know if the smartarray raid controllers that are used by HP distribute access over the disks, in a raid 1 configuration, as far as I know though, they don't. It is different with raid 5, there more than one disk can be read at the same time with most controllers I know.

0
 
LVL 55

Expert Comment

by:andyalder
Comment Utility
Smart Array controllers *do* use RAID 1 (or 10) load balancing so if there are lots of reads then half will come from one disk and half from the other.

150GB is rather big for C:, 20 or 25 GB would be best with the rest assigned for data. Note that it is better to create two seperate logical volumes on the array rather than partition the disk under Windows as this makes for easier capacity expansion in the future.
0
 
LVL 1

Expert Comment

by:kplais1
Comment Utility
150 GB for C:?? Way to big. At most maybe allocate 35GB or so, and then use the rest of the space for one or more logical partitions. You should still not encounter any performance issues with your current config.
0
 
LVL 55

Expert Comment

by:andyalder
Comment Utility
Yup, welcome to quickpost. First on the button even if it's "do you have a RAID controller" when that particular server was never available without one and "I don't know if it reads from either disk" when it's assured it does.
0

Featured Post

Free Gift Card with Acronis Backup Purchase!

Backup any data in any location: local and remote systems, physical and virtual servers, private and public clouds, Macs and PCs, tablets and mobile devices, & more! For limited time only, buy any Acronis backup products and get a FREE Amazon/Best Buy gift card worth up to $200!

Join & Write a Comment

Suggested Solutions

We wanted to provide an in-depth explanation of the Ping Node offering clarifications on its function and usage. Incorrect Ping Node configuration and functionality can cause problems with HA clusters. The importance of this article is critical for …
I previously wrote an article addressing the use of UBCD4WIN and SARDU. All are great, but I have always been an advocate of SARDU. Recently it was suggested that I go back and take a look at Easy2Boot in comparison.
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now