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тАО05-23-2006 06:14 AM
тАО05-23-2006 06:14 AM
RAID 1 (4D+4D) on XP arrays
I know that in the Storage Navigator (CommandView) GUI on the xp1024 all 4D+4D concatenated groups show up as 2D+2D but you can view the concatenation list and see that the RGs are actually concatenated on the back end. Ive heard varying responses to the from different people (HDS and HP) and may be I will here too ;-)
But its worth asking - thanks!
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тАО05-30-2006 10:52 AM
тАО05-30-2006 10:52 AM
Re: RAID 1 (4D+4D) on XP arrays
on the 12000, 4D+4D is actually 4D+4D
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тАО05-30-2006 06:30 PM
тАО05-30-2006 06:30 PM
Re: RAID 1 (4D+4D) on XP arrays
Just to be clear - you are saying that on the XP1024 a 4D+4D is just a 2 concatenated 2D+2D's. As such you will fill up one half of the concatenation set first (on one ACP) and then only start using the spindles in the second half after the first half is full?
And finally, not that I dount your answer at all ;-) how sure are you about this as Ive heard varying responses on this topic in the past.
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тАО09-02-2006 02:56 AM
тАО09-02-2006 02:56 AM
Re: RAID 1 (4D+4D) on XP arrays
Can anyone confirm this, I would also like to know the answer.
Many thnaks
Kamel
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тАО09-07-2006 12:15 AM
тАО09-07-2006 12:15 AM
Re: RAID 1 (4D+4D) on XP arrays
We are using XP12000 and HP had told us that 4D+4D is just two 2D+2D concatenated. I'm confused now :)
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тАО09-07-2006 03:33 AM
тАО09-07-2006 03:33 AM
Re: RAID 1 (4D+4D) on XP arrays
A 1024 on the other hand does fill one then the other.
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тАО09-07-2006 09:15 AM
тАО09-07-2006 09:15 AM
Re: RAID 1 (4D+4D) on XP arrays
a 4D+4D on a 1024 contains two 2D+2D, but the two 2D+2D will filled consecutively? A 12k will write across the two 2D+2D, so that I will get better peformance (four disks will used, instead of two). Is this right?
Regards,
Patrick
Patrick