Solved

Ideal RAID configuration

Posted on 2015-01-02
9
284 Views
Last Modified: 2015-01-04
Hi all,

What is the ideal RAID configuration for a server that will work as domain controller,  web server and file sharing.  Thr server will serve 10-15 users.

Thank you
0
Comment
Question by:goldenstar
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 16

Expert Comment

by:Shaik M. Sajid
ID: 40528850
raid 5 is best.. for small users...  if u have only 3 hdd's  here u have 1 parity disk.. (if 1 fails your server is still alive)

if u have 4 HDD's u can choose  Raid 6 (here u have 2 parity disks.. (if 2 fails your server is still alive)

or(if u have 4 HDD's) if u need more speed and performance go for Raid 10 (it's a combination of Raid 1+0 here u have 2 fail over disks.. and it's faster in performance comparing to raid 5 & 6
0
 
LVL 24

Expert Comment

by:NVIT
ID: 40528891
If you decide on larger capacity drives, they take longer to rebuild. For those, I'd probably lean towards RAID10.
0
 
LVL 88

Accepted Solution

by:
rindi earned 500 total points
ID: 40528981
I don't agree with the above comment of using RAID 5. On the contrary, that is one of the worst RAID configs. If a RAID 5 array fails, it is at risk during the rebuild, during which all kinds of things can go wrong. The rebuilds usually take long, which means you are at that risk for a longer period of time. Besides that, it is easier to make human errors with that type of array, which also risks your data.

RAID 5 may have made some sense some years ago when disks had a low capacity and were expensive. With RAID 5 you could get the maximum usable space out of a limited number of low capacity disks, while still having some redundancy.

With today's TB disk sizes, and their low price, I'd recommend RAID 1 with a hot-spare, it is far more reliable and much easier to manage than RAID 5, and human errors are less likely, or if you need high performance, then as in the comment above, use RAID 10 (also with a hot-spare).
0
Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

 
LVL 24

Expert Comment

by:VB ITS
ID: 40528983
Seeing as this will be a pretty crucial server I would go with RAID10 if funds permit. Otherwise RAID5 would be the next best option. I am trying to avoid recommending RAID5 these days though as rebuilds get risky as mentioned by rindi above.
0
 
LVL 2

Expert Comment

by:phil435
ID: 40529104
Are you trying to spec a server or do you already have the server with the drives and need to know what raid level? If you already have the drives what is the number of drives, size, and speed? DC's are typically low IO requirements especially with 10-15 users.

I would stay away as mentioned above from raid-5 as its not recommend anymore by most manufacturers.
0
 
LVL 3

Expert Comment

by:Glenn M
ID: 40529107
RAID 5 is the worst performer. For small business applications like this we always suggest two arrays. A RAID 1 boot array with a pair of fast drives (SAS 15K) for the OS, then a RAID 10 data array for everything else (10K SAS drives are usually fine here).

Stay away from SATA drives as they are dogs in terms of performance even for a small network of 10-15 users.
0
 
LVL 88

Expert Comment

by:rindi
ID: 40529117
One thing you should consider is to virtualize your servers, and good practice also calls for you to use separate server installations for your tasks (the DC should only be a DC, The file server should also be separate, and the web-server, if it is meant as a public web-server, should be on a separate LAN in a DMZ anyway).
0
 

Author Comment

by:goldenstar
ID: 40529860
Thanks all for sharing your ideas. Really appreciate it
0
 
LVL 16

Expert Comment

by:Shaik M. Sajid
ID: 40529941
Mr. Rindi is right but when u have 3 HDD's and u need maximum of space with redundant feature.. the raid 5 i'll prefer...

best regards
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Are client relationship the only driver of a successful MSP? While important, client relationships are only one component. Learn how else MSPs can broaden their horizon and differentiate themselves.
How many times a day do you open, acknowledge, or close an IT incident? What’s your process? Do you have a process depending on the incident, systems involved, and other factors? New Relic Alerts gives you options for how you interact with notifica…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
Suggested Courses

623 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