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тАО07-13-2011 07:06 AM
тАО07-13-2011 07:06 AM
Re: HP P2000 G3 Directed Connected
Well, is it normal to get more than 400MB/s (or whatever 4Gbps amounts to) from one disk shelf?
Probably with the SFF shelf (so max is 24 disks on one shelf).
But if you're doing this kind of on the cheap I presume you'll use 7200 RPM SAS/SATA disks?
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тАО07-14-2011 06:10 AM
тАО07-14-2011 06:10 AM
Re: HP P2000 G3 Directed Connected
I see. I plan to use a mix of SAS (15k) and SATA (7.2k) disks.
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тАО02-01-2012 10:48 AM
тАО02-01-2012 10:48 AM
Re: HP P2000 G3 Directed Connected
In a implementation with one host directed connected to controller A and another host directed connected to controller B, could a volume owned by controller A be accessed by a host that's connected to controller B?
Thanks in advance.
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тАО02-01-2012 10:53 AM
тАО02-01-2012 10:53 AM
Re: HP P2000 G3 Directed Connected
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тАО02-01-2012 10:55 AM
тАО02-01-2012 10:55 AM
Re: HP P2000 G3 Directed Connected
You should connect
server A to ports A1, B1:
server B to ports A2, B2
for redundancy.
You can now create 2 vdisks with volumes, one for server A, another for B, each owned by one controller, if you like.
Hope this helps!
Regards
Torsten.
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тАО02-01-2012 11:40 AM
тАО02-01-2012 11:40 AM
Re: HP P2000 G3 Directed Connected
I am almost convinced that during a normal operation a host directed connected to a controller won't be able to access the volume owned by the other controller, but I need to be 100% sure on this.
Thanks.
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тАО02-01-2012 11:50 AM
тАО02-01-2012 11:50 AM
Re: HP P2000 G3 Directed Connected
You should access the volumes via the preferred owner for performance reasons.
Hope this helps!
Regards
Torsten.
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тАО02-01-2012 12:09 PM
тАО02-01-2012 12:09 PM
Re: HP P2000 G3 Directed Connected
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тАО02-01-2012 12:18 PM
тАО02-01-2012 12:18 PM
Re: HP P2000 G3 Directed Connected
The preferred owner fails or the SAN connected to the preferred owner fails, the other controller becomes the current owner and owns the disk.
While doing the presentation you present a volumes via the array ports. Usually to all 4 array ports.
But the access via the "non-owner" will not be optimal (slower).
Hope this helps!
Regards
Torsten.
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тАО02-01-2012 12:30 PM
тАО02-01-2012 12:30 PM
Re: HP P2000 G3 Directed Connected
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