Solved

Raid 5

Posted on 2012-04-13
7
327 Views
Last Modified: 2012-07-23
I have  4 hard drive each with 1TB  running Raid 5 what should my total usable space be?
0
Comment
Question by:D-Tech-Man
7 Comments
 
LVL 23

Expert Comment

by:basicinstinct
ID: 37841403
3TB
0
 
LVL 7

Expert Comment

by:David_Hagerman
ID: 37841428
3TB is correct, if you choose RAID 5 (Stripe set with parity) however if you choose other options you might loose more space

Here is a raid Calculator to assist with these calculations
http://www.raid-calculator.com/Default.aspx
0
 
LVL 5

Assisted Solution

by:Sjizzel
Sjizzel earned 250 total points
ID: 37841433
Another RAID calculator:

http://www.ibeast.com/content/tools/RaidCalc/RaidCalc.asp

raid 5 capacity is all disks -1
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 46

Expert Comment

by:noxcho
ID: 37841464
Yup, 3TB.
0
 
LVL 47

Accepted Solution

by:
dlethe earned 250 total points
ID: 37842073
3TB, but since you are asking the question, I'll throw out that older RAID controllers have problems going past 2.09TB, and that unless you have an UEFI BIOS, then the largest device you can boot is also 2.09TB.  So if you aren't seeing 3TB then it is likely due to one of these reasons.
0
 
LVL 16

Expert Comment

by:Gerald Connolly
ID: 37846489
Don't forget to factor in filesystem overheads and the effect of partitioning, and oh don't be caught out by the 1000x1000 v 1024x1024 debate on reporting of sizes
0
 

Author Closing Comment

by:D-Tech-Man
ID: 38214878
Thank you
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Bellevue, WA, USA; Late December, 1980 "OK, folks, we nailed the IBM contract. We're going to have many meetings like this to discuss features and functions...and how to move from 86-DOS, the CP/M clone we just purchased, to our baby, MS-DOS. Thi…
When we purchase storage, we typically are advertised storage of 500GB, 1TB, 2TB and so on. However, when you actually install it into your computer, your 500GB HDD will actually show up as 465GB. Why? It has to do with the way people and computers…
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…

831 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