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Dell poweredge R720 HDD not detecting - RAID PERC H710 Mini Problem

Posted on 2014-02-26
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Last Modified: 2016-12-08
I have 4 Qty 1 TB SATA HDD in my Dell poweredge R720  . But only 2 HDD appear in the PERC H710 Mini RAID config utility in the BIOS.
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Question by:jobby1
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12 Comments
 
LVL 33

Assisted Solution

by:PowerEdgeTech
PowerEdgeTech earned 500 total points
ID: 39889622
Did you install the "new" 2 disks, or are they all originally-installed disks from Dell?
Are all of them the same make/model?  If not, what is the make/model of the "new" ones?
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Author Comment

by:jobby1
ID: 39891083
It is installed originally by dell all disks are same size and speed.
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LVL 33

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by:PowerEdgeTech
PowerEdgeTech earned 500 total points
ID: 39897231
Did they ever work or is this a new server?

Only two show up on the PD MGMT screen of CTRL-R?
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Author Comment

by:jobby1
ID: 39898816
After I swap the HDDs now all the 4 HDDs showing as ready but not online in PD mgmt and BIOS device setting HDD properties.I cannot config RAID or install windows now.
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Author Comment

by:jobby1
ID: 39898822
Also i noticed 2 hdds are segate and 2 hdds westen digital.is this a problem.but same speed and size.
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LVL 33

Assisted Solution

by:PowerEdgeTech
PowerEdgeTech earned 500 total points
ID: 39899416
As long as the drives are certified, then the make/model doesn't matter.  It is unusual (but not impossible, for this reason, that Dell configured it with different makes/models), but if they were not all original Dell drives, the issue would most surely be one of compatibility.

At this point, you "should" be able to configure RAID as you wish.  Make sure the drives are not foreign ... highlight the controller on the CTRL-R, VD MGMT screen, foreign, clear.
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Author Comment

by:jobby1
ID: 39910642
Now I managed to confg RAID 5. Howe ever I can not create the partition size more than 2.2 TB while installing windows. The remaining space system  create another volume but I can  not format or do anything. I am using windows 2012 R2 std.
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LVL 33

Accepted Solution

by:
PowerEdgeTech earned 500 total points
ID: 39910706
Windows cannot use a disk larger than 2TB unless it is a GPT disk.
Windows cannot boot to a GPT disk unless installed on a UEFI-enabled system.

You need to boot to F2 and change the boot mode to UEFI, then you need to convert the "disk" to GPT prior to installing Windows.  If you need help doing this, you will need to start a new question.

http://technet.microsoft.com/en-us/library/dn336946.aspx
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LVL 33

Expert Comment

by:PowerEdgeTech
ID: 39969218
Why the grade of 'B'?
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Author Comment

by:jobby1
ID: 39971434
does it matter?
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LVL 33

Expert Comment

by:PowerEdgeTech
ID: 39972471
Yes.  

1) It helps me know what to do to improve answers.  
2) EE would like you to explain the reason for a 'B' grade, so others know what kind of information is "missing" from the Accepted Solution(s) to have a "complete" solution to be able to resolve their issue too.
3) Points are awarded based on the grade.

http://support.experts-exchange.com/customer/portal/articles/481419

I don't care about points or a "perfect record" ... others read and rely on these threads for solutions, and while it appears from the thread that the information I provided was what you needed, the grade of 'B' indicates that something was missing from it to be considered a "complete" solution.

I won't bug you about this or anything - I'll let you do whatever you will with it - but most Experts rely on the grading to improve their answers.

Take care.
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