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Adding a second array to a production server

Posted on 2009-02-17
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I have a PowerEdge 2950 with Windows Server 2003 and SQL 2005 just moved into production.  Now the developers who originally spec'd the server are complaining about low disk space.  I want to add 4 new 146GB SAS drives without rebuilding the existing RAID 5 array to avoid moving the server out of production.  I've physically added the 4 new drives and with Dell OMSA I can see the original array under PERC 6/i > Connector 0 > Physical Disks and the new drives under Connector 1...  I would just use the PERC Bios configuration utility to add a second array but this a different utility for the SAS RAID servers...  What is the easiest way to add a second array without removing the server from production?  (With the exception of a scheduled restart.)  
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Question by:Grape88
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by:blahphish
ID: 23663410
You should be able to build your new array via the Dell OMSA - under connector 1 do you have a drop down box that says connector tasks when you have connector 1 selected? Try digging around in OMSA a little more I think you might be able to find what you're looking for.
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by:blahphish
ID: 23663420
Also forgot to mention - it might be on the controller task window - select the controller (perc 6/i) and look at the information/configuration area.
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by:Grape88
ID: 23663617
I have a drop-down list of "Available Tasks" under TASKS which include teh following: blink, unblink, assign blobal hotspare & clear.  I've tried selecting "clear" and execute which seems to perform the operation but I expected something after that... instead the same options are available (blink, unblink, hotspare, clear.)  I don't see any other options anywhere.  I'd be willing to try the PERC SAS utility but I've accessed it once and was never able to view the anything except connector 0.
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by:blahphish
ID: 23663653
So you checked both task areas - one in the connector screen and the other in your adapater screen?
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by:Grape88
ID: 23663765
I've found both; under "LSI Logic 1020/1030 Ultra320 SCSI Adapter" and under "PERC 6/i integrated."  Under the adapter for "connector tasks" it says "No Tasks Available."  Under PERC 6/i it lists the same tasks previously mentioned.  Still no go...  I wonder if I need Dell array manager software?
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blahphish earned 1000 total points
ID: 23663809
I use Dell OpenManage Server Administrator Version 5.1.0 on my PE 2950 and on my perc controller it gives me the task option of adding virtual disk, which is what you want. You might try to check your version?

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by:blahphish
ID: 23663820
by the way - I'm finding this under CONTROLLER tasks, not connector. I am clicking on my Perc and going to the information/configuration link at the top.
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by:Grape88
ID: 23664494
Ok, now I see the other options.  It seems I'll need to follow the "create virtual disk" wizard.  It'll be a few minutes more before the "clear" task completes.  So when using the "create virtual disk wizard its prompting me to add but not reconfiguring or delete virtual disks?  Im not very familiar with the settings and want to make sure Im only adding and not deleting a virtual disk.  I wasnt sure because it seemed like the amount of disk space showing available when I selected RAID 5 was too low for 4 146GB disks.  (which is why I ran the clear task on the new disks but probably not necessary.)  ...any ideas about the new RAID 5 showing what seemed like only 2 disks free space?
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by:Grape88
ID: 23664891
Done!  Thanks for your assistance blahphish.  The math was actually correct when figurign the RAID5 w/hotspare.  Recommend the advanced wizard, assign disks, then fast initialize.  Thanks again.
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by:blahphish
ID: 23664911
You might want to make sure each of your 4 physical disks is marked as ready and none of them have been set as hotspare. When you go to create your raid5 you're correct that you should show 3 drives worth of space (slightly less than 450gb.)

Not sure what the clear task does off top of my head but maybe it has one or more of the drives locked in use so it doesnt show up for use in the create virtual disk wizard?
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by:blahphish
ID: 23664924
Oh, also make sure one of your 4 new drives didnt end up on connector 0 instead of connector 1 - its ok if its physically in connector 0 but you need to get the wizard to use all 4 of your new physical drives in some form or fashion.
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