Re: Changing a RAID configuration - Adding/removing disks

[Larry Bolhuis <lbolhuis@xxxxxxxxxx>]

Pete,

 The new drivers are 70GB vs the original ones at 35GB. (But you knew 
that!)  You should be able to start parity on those drives even now with 
the data on them. They can be in the same ASP, that's not a problem they 
will just be a different RAID set.

Boot the thing to DST to into Work with Disk Units, then tell it to 
Start Disk Parity.  If it doesn't let you do that with the data still 
there then you'll need to remove the new drives from the ASP, then start 
Parity, then add them back into ASP 1.

 - Larry

Pete Helgren wrote:
> I have a customer with a new i5 520 that we added 4 drives to.  It 
> originally had 4 drives and we added 4 more.  The problem is that I 
> added the new units to the existing ASP (1) and it turns out the new 
> drives were a different size and model than the original 4 so they 
> couldn't be added to the RAID parity set. I need to correct this before 
> we go into production.
>
> So, what I'd like to do is get these new drives as part of a protected 
> raid set.  Current disk protection status is:
>
>              Serial                  Resource                
>  ASP  Unit   Number      Type Model  Name        Protection  
>    1                                             Unprotected 
>          1   68-0D9C14B  4326  074   DD002       Device Parity
>          2   68-0DD6772  4326  074   DD004       Device Parity
>          3   68-0DD7645  4326  074   DD003       Device Parity
>          4   68-0DD75EF  4326  074   DD005       Device Parity
>          5   68-0DCE4C6  4327  050   DD008       Unprotected 
>          6   68-0DCB227  4327  050   DD001       Unprotected 
>          7   68-0DCF3A4  4327  050   DD006       Unprotected 
>          8   68-0DCD5D9  4327  050   DD007       Unprotected 
>
> I think I can make the 4327 drives part of a different ASP and then they 
> can be part of a RAID set (correct?)  The storage controller displays as 
> a 573D when I use Work with Storage Resources.  Or, is there a better 
> way to do this?  Also, I have typically worked with smaller system that 
> have only one ASP, is there a downside to multiple ASP's?
>
> If I do remove the 4327's from ASP 1 and create a new ASP, how do I move 
> data off of them?
>
> Just need a few pointers on how to proceed.
>
> Pete Helgren
>
>