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тАО05-13-2007 08:04 PM
тАО05-13-2007 08:04 PM
EVA Generation 2 Queries
1. Can anyone confirming me the secure path is necessary for generation 2 eva since its active/active communication structure?
2. If we add more disks in disk group it will decrease performance or not?
-Sharjeel
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тАО05-13-2007 08:29 PM
тАО05-13-2007 08:29 PM
Re: EVA Generation 2 Queries
Secure path is not supported with Active/Active Configurations on
Windows Systems.
Reason:
The binding cannot work because the RaiDisk.sys does not recognize an
HSV2x0 LUN as a LUN it should bind to because the .inf cannot
identify it as a supported device.
Securepath on Windows is only for Active/Passive EVA (3000/5000) or for
VA/XP by installing the Autopath portion.
But for Active/Active EVA (4000/6000/8000) is only supported via MPIO Full Feature.
http://h20000.www2.hp.com/bizsupport/TechSupport/ProductList.jsp?lang=en&cc=us&prodTypeId=18964&prodSeriesId=421492&taskId=135
How many disks would you be adding to a single diskgroup?
Hope this answers your query?
Regards,
Prabhu
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тАО05-13-2007 09:28 PM
тАО05-13-2007 09:28 PM
Re: EVA Generation 2 Queries
We have 36disks in EVA 4000 storage...but the question is general for performance related within a disk group.
-Sharjeel
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тАО05-13-2007 10:24 PM
тАО05-13-2007 10:24 PM
Re: EVA Generation 2 Queries
as multipath solution you can use Pvlinks and therefore you do not need SecurePath. But, PVlinks have some limits and you should take them into consideration.
More disks will increase performance of DG.
BR,
Mario.
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тАО05-14-2007 03:23 AM
тАО05-14-2007 03:23 AM
Re: EVA Generation 2 Queries
After adding a disk in a disk group dat will improve the performance or availablity?what is da best answer...i m confuse...:(
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тАО05-14-2007 04:51 AM
тАО05-14-2007 04:51 AM
Re: EVA Generation 2 Queries
you can use autopath for load balacing with HP-UX 11.11 and 11.23, but it is enough to use pvlinks and balance the links across the HBAs.
With HP-UX 11.31 the load balancing is built-in the new mass storage stack.
Hope this helps!
Regards
Torsten.
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тАО05-14-2007 05:02 AM
тАО05-14-2007 05:02 AM
Re: EVA Generation 2 Queries
So EVA4/6/8000 can be operated with OS built in MP soltions.
The only OS where you still can optionally use Secure Path is HP-UX (actually it is Autopath built in to SP)
For MP on HP-UX 11.x you can use either:
- pvlink
- Securepath
- DMP (part of Symantec Storage Suite)
For more details see the HP SAN Design Guide Chapter 8, page 142 ff on http://www.hp.com/go/sandesign
Cheers
Peter
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тАО05-14-2007 08:04 PM
тАО05-14-2007 08:04 PM
Re: EVA Generation 2 Queries
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тАО05-14-2007 08:12 PM
тАО05-14-2007 08:12 PM
Re: EVA Generation 2 Queries
Cheers Peter