Solved

Which setup is going to be faster?

Posted on 2006-06-26
7
259 Views
Last Modified: 2010-04-26
DELL PRECISON 490
Dual Core Xeon 3ghz
4GB RAM

I need this machine for a programmer/developer that will be running Virtual PC to isolate their enviornments.

The question is, what should the HD configuration be?

2 160GB SATA 3.0GB/s 7200 in RAID 0 STRIPE configuration?
1  160GB SATA 3.GB/s for bASE OS and then 1 160GB SATA 3.0GB/s for housing the virtual PCs

Please let me know

thanks
0
Comment
Question by:shankshank
7 Comments
 
LVL 69

Accepted Solution

by:
Callandor earned 400 total points
ID: 16983825
The RAID-0 stripe will be faster.  However, stripe arrays are inherently more likely to fail, since a failure in either drive will result in loss of data.  I would include a third normal drive, either locally or on a network, for saving work periodically.
0
 
LVL 26

Assisted Solution

by:PCBONEZ
PCBONEZ earned 100 total points
ID: 16984225
You are not taking into account some important information.
The 3.0GB/s SATA rating is irrelivant to the drives real world performance.
That's is only the interface. (Tranfer rate between the drive and the system.)
The bottleneck with hard drives data transfer is a physical limitation of the drive and is the transfer rate between the actual discs and heads. - Has NOTHING to do with the interface.
The fastest I've ever seen was about 59.5 MB/sec. (7200 RPM drives. PATA, SATA, SCSI were all same-same.)
- Drive and interface manufacturers don't want you to know this. They dropped the head-disc transfer rate (aka "media transfer rate") from the spec sheets around 2003 so people don't figure out all the hype about the interface transfer rate is useless information. [ A marketing ploy at our expense. ]

Unless your client is willing to write-off ALL work done between back-ups and/or have a lot of idle (non-production) time running backups I recommend raid 0+1.
.
0
 
LVL 5

Author Comment

by:shankshank
ID: 16984388
Well as far as backups are concerned, the data will be held in virtual pcs. So backups are a simple shutdown virtual pc copy image file over.

So maybe my first option is ok? raid 0 stripe 2 160gb satas?

It just seems more people were leaning towards separateing the physical OS and virtual pc on diff drives
I'd hate to build such an expensive machine and have my HD be the bottle neck
0
Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

 
LVL 69

Expert Comment

by:Callandor
ID: 16984426
It looks like you have the backups covered, so RAID-0 will work for you.  I use 2 WD SATA Raptors in a RAID-0 array and measured a steady 100MB/sec transfer rate with HDTach.
0
 
LVL 5

Author Comment

by:shankshank
ID: 16984443
ah, you're at 10k rpm thou, i wonder how these 7200rpm drives will perform

I can see a potential 3 virtual pcs running simeltaneously......
0
 
LVL 7

Expert Comment

by:puter_geek
ID: 16984605
If you want the best bang for your buck, go with the WD2500YD it is 250GB and anandtech.com just did a review of it and compared it to several other drives.  Even the Raptor, and they didn't do too all bad.  
Here is the review.
http://www.anandtech.com/storage/showdoc.aspx?i=2784&p=1

Here is the link to Newegg.com.  They are 84.99 + 5.46 for shipping
http://www.newegg.com/Product/Product.asp?Item=N82E16822136010
0
 
LVL 69

Expert Comment

by:Callandor
ID: 16984674
The Raptor in single drive mode measured 70MB/sec max, so I think you will see improvement with 7200rpm drives.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article we have discussed the manual scenarios to recover data from Windows 10 through some backup and recovery tools which are offered by it.
Stuck in voice control mode on your Amazon Firestick?  Here is how to turn it off!!!
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…

792 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