Solved

How to make Drives visible to OS if they are connected to raid but raid is not configured?

Posted on 2016-09-02
11
40 Views
Last Modified: 2016-12-08
So I have 4 drives that are "Unconfigured Good". They are not in any virtual drive. I want to present them without change them to JBOD. How to make my drives visible to OS keeping them as separate drives (not putting them into any kind of RAID)?
0
Comment
Question by:SITPL
  • 3
  • 3
  • 2
  • +2
11 Comments
 
LVL 46

Expert Comment

by:noxcho
ID: 41781148
What RAID controller?
0
 
LVL 88

Accepted Solution

by:
rindi earned 250 total points (awarded by participants)
ID: 41781220
Connect them to a controller that doesn't do RAID. Or check your controller's manual. Many allow you to setup your disks as a single disk RAID 0 array, and then they would be visible to the OS as single disks.
0
 
LVL 77

Assisted Solution

by:arnold
arnold earned 125 total points (awarded by participants)
ID: 41782099
raid controller presents configured volumes to the OS.
See if your controller Dan pass through the disks.

You need a non-raid controller where you need disks access to Be direct from the OS
0
 
LVL 16

Assisted Solution

by:Gerald Connolly
Gerald Connolly earned 125 total points (awarded by participants)
ID: 41784147
So just configure them in the RAID controller as single volume and they will get presented to the host as individual devices.

Why do you want to do this anyway?
0
 

Author Comment

by:SITPL
ID: 41787204
Conditions are that the Disks are attached to RAID card but raid is not configured and JBOD or pass through is not supported then how to get handle of hard disks.
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 
LVL 77

Assisted Solution

by:arnold
arnold earned 125 total points (awarded by participants)
ID: 41787224
try to create a RAID 0 logical volume consisting of a single Disk for each physical disk.  
using a RAID controller where a standard HD controller is a less costly alternative.... What System Vendor/model do you have, you may have the option of using MB included/built-in ports instead of the RAID controller.
I think it was mentioned earlier as well...

Which RAID controller Do you have.  Some Older controllers had the options of switching the Controller from a RAID to a non-raid controller. Perc 4's........ during bootup/bios settings...
0
 
LVL 16

Assisted Solution

by:Gerald Connolly
Gerald Connolly earned 125 total points (awarded by participants)
ID: 41787274
So what's the issue about not configuring these disks in the RAID controller?

unless you are able to switch the controller into non-RAID mode, whatever is on these disks will be trashed
0
 

Author Comment

by:SITPL
ID: 41789035
I am using  'LSI MegaRAID SAS 9361-4i'  RAID controller. My purpose is to wipe all the disks properly, not a single byte should not remain unwipe.
I have done that after converting JBOD mode using MegaCli but it fails when JBOD is not supported by the RAID card.
Second, it can be done after converting each disk to RAID 0 individually but after that some bytes are conserved for the RAID 0. So some bytes are left, which is not according to my work.
I can get the information of the disks individually but i want handle or the path like '/dev/sda' of each disk individually but unable to get them.
I have dismental the RAID but unable to get handle of the disks.
0
 
LVL 77

Assisted Solution

by:arnold
arnold earned 125 total points (awarded by participants)
ID: 41789104
What Are you after? Creating a RAID 0 volume with all drives and then running the "wipe" should provide the same as if you were running it one drive at a time.

The mechanics does not require you to run the application one drive at a time, the process merely needs to repeat on the media ........

Do you have SAS HBA through which you can connect the drives?
0
 
LVL 88

Assisted Solution

by:rindi
rindi earned 250 total points (awarded by participants)
ID: 41789175
Then as I mentioned, connect the disks to a non-raid controller.
0
 
LVL 16

Expert Comment

by:Gerald Connolly
ID: 41817520
Several excellent suggestions for resolving this problem by the team
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Poweredge R430 replaced physical disk, but now what? 15 67
OS drives in an array 3 57
How to learn Linux? 10 41
Hot Spare Testing on Non-HotSwap server 6 24
The Samsung SSD 840 EVO and 840 EVO mSATA have a well-known problem with a drop in read performance. I first learned about this in an interesting thread here at Experts Exchange: http://www.experts-exchange.com/Hardware/Storage/Hard_Drives/Q_2852…
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
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…

932 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

Need Help in Real-Time?

Connect with top rated Experts

8 Experts available now in Live!

Get 1:1 Help Now