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RAID

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance.

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.

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raid 5 drive not showing data asking for format
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Administrative Comment

by:Mr. Wolfe
Please click the blue, Ask a Question button at the top of the page. This will generate a question where Experts can respond.

Mr Wolfe
EE Moderator
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IT Pros Agree: AI and Machine Learning Key
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IT Pros Agree: AI and Machine Learning Key

We’d all like to think our company’s data is well protected, but when you ask IT professionals they admit the data probably is not as safe as it could be.

Hello experts can you guys please advise me I have scenario I need to add more disk space to File server, The file server is a VM on Hyper-V host, Hyper-V host has 2TB X 4 HDD's with RAID 1, so we get 2TB for backup and 2TB for system which has server 2012 r2 host with role of Hyper-V it has two VM's a DC1 and File Server, can you guys please help me how can i move over to Raid 5 or 6 without losing data and my VMs machines.
Thanks
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Expert Comment

by:Gerald Connolly
Yes go with RAID-6 or RAID10, do not use RAID-5

You should also be able to replace one of the Disk with a Bigger size and wait for it to sync, then replace the second drive and wait for it to sync, then either extend the current partitions, or create a new volume out of the unused space.

Please make sure you have viable backups before you attempt any reconfig of your storage (NB Schroedingers Backups)
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Author Comment

by:Yasir Arfat
Awesome thanks Gerald
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Hello,
I am using the RAID-1 configuration for my HDD . Before starting the Windows installation i have set the RAID in BIOS .
then go to CTRL+I and create the raid for my HDD and console was showing NORMAL ( GREEN)
STEP 2 : Now when i start the windows installation , the Windows need the raid driver for detecting my HDD . i provide it and HDD detected . The Windows installation starts . ..

Now When the installation reached the last STEP of WIndows 7 installation : " COMPLETE INSTALLATION STEP"

and the System Restart . I see one problem ..

The RAID HDD status changes from NORMAL to INITIALIZE MODE . so can any one answer actually i want the HDD to be in NORMAL Mode only . please suggest is this normal ?
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Expert Comment

by:Brian B
Were you looking for help on this? You might want to ask it as a question to get more Experts to see it. https://www.experts-exchange.com/askQuestion.jsp
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RAID

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance.

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.