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Re: EVA Upgrade

 
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Balakrishna Kotian
Frequent Advisor

тАО09-15-2005 07:11 AM

тАО09-15-2005 07:11 AM

Re: EVA Upgrade

Hi Peter,

I very much agree with you choice of option but what I was looking like what happens if the backplance fails in an enclosure which is very rare or multi-disk failure (meltdown) brings down the full enclosure. I also checked the current RSS state is set to mirror and we already got Vdisk1 and Vdisk5 in a single disk group.
As per Mr. Uwe RSS only support Vdisk1 in mirror state and I also used EVA sizer in which when I feed in my existing details and I see RSS dont support. But as soon as I make it to 2C12D the mix Vdisk works.

Any suggestion on this as our EVA3000 is currently in production so that I cannot test failing of one enclosure :) or else I would be the first one to test.

Uwe, I also tried looking to the help menu of EVA still failed to get the piece of information which you have provided. I would appreciate if you help me in getting that part of information in some kind of doc.

I have also attached the screen shot of EVA sizer tool.

BR

Bala
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Balakrishna Kotian
Frequent Advisor

тАО09-15-2005 07:29 AM

тАО09-15-2005 07:29 AM

Re: EVA Upgrade

Uwe,

If I further look more into details of RSS for 29 nos of disk, RSS member will be created as 8+8+8+5 or 8+8+6+7 ? which one is supported or will it work in real scenario.

Tnx

Bala
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Steven Clementi
Honored Contributor

тАО09-15-2005 08:58 AM

тАО09-15-2005 08:58 AM

Re: EVA Upgrade

Bala:

I believe you will NEVER have an RSS group of 5 disks. RSS strives to be at 8 disks, but depending on the amount of disks you actually have, you can have 6 to 11 disks in 1 RSS.

It is likely that you will have.. 8 + 8 + 7 + 6.

The way it works out is... the RSS starts out at 6 disks and will expand up to 11. Once it hits 12, it splits into 2 groups of 6. When you add more disks, the first group of 6 will increase to 8 disks, then the second group will increase to 8, then if you add more, the last groupd will increase to 11 again and start the process over. (all assuming you adding 1 or 2 disks at a time).

Steven
Steven Clementi
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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Balakrishna Kotian
Frequent Advisor

тАО09-20-2005 05:21 AM

тАО09-20-2005 05:21 AM

Re: EVA Upgrade

Hi Everybody, Thank you for everyones replies and suggestions. I got lots of answers whatever I wanted.
Thank you guys!!

BR
Bala
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Balakrishna Kotian
Frequent Advisor

тАО09-20-2005 05:23 AM

тАО09-20-2005 05:23 AM

Re: EVA Upgrade

Upgrading to EVA 6000 from EVA3000 ;-)
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