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EVA 4400 - horizontal to vertical

 
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ICTMan_Taupo
Visitor

EVA 4400 - horizontal to vertical

I began with an EVA4400 Starter Kit which comprises the controller and one enclosure.  This was filled with 12 x 400GB 10K FC disks and is in a production environment.  Later, I added a second enclosure which was filled with 12 x 1TB FATA disks for near-line archiving.

 

I want to expand by adding 2 x enclosures and I also want to improve redundancy by adding 4 x 400GB 10K and 4 x 1TB FATA drives.  This gives me a total of 16 of each disk type.

 

I have been told that I should change the physical layout so that my 400GB 10K FC disks are in bays 1, 2, 3 and 4 of each of the four enclosures and the 1TB FATAs in bays 9 through 12 - so, horizontal to vertical.

 

How in the name of Bilbo Baggins do I do that?  I've searched nooks, crannies and hobbit holes on the InterWebNet and found lots of stuff but nothing really answering my question.

 

Does anybody have any ideas, please?

 

Dave Cowman

ICT Manager

Strettons

Taupo (nr Mt Doom)

New Zealand

9 REPLIES 9
Torsten.
Acclaimed Contributor

Re: EVA 4400 - horizontal to vertical

4 disk enclosures will not give you full enclosure redundancy, but however, consider to shutdown the array and sort your disks, the array will find them and continue. Likely it will do several levelings after this.


Hope this helps!
Regards
Torsten.

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giladzzz
Honored Contributor

Re: EVA 4400 - horizontal to vertical

Hi

First you add the new enclosures and disks you can do this online just put 4 disks in each new enclosure. Then you have to check how the RSS are distributed between the disks there should be 2 RSS of 8 disks in each disk group. When you have all your RSS mapped you shutdown the EVA (power down ) rearrange the disks according to the RSS that is 2 disks of each RSS in each disk enclosure. And then power on the EVA. You should be OK now

Regards

 

Press the Kudos star if you liked

 

ICTMan_Taupo
Visitor

Re: EVA 4400 - horizontal to vertical

Thanks for the responses.  Just to clarify, here's my current layout (controller is at the bottom, enclosure 1 (E1) is on top of that, enclosure 2 (E2) on top of E1 - new enclosures E3 and E4 on top again:


Key: FAn = FATA disk number n
Key: FCn = 400GB 10K FC disk number n
Key: mt = empty bay

 

E4 - empty, not connected, not powered on
E3 - empty, not connected, not powered on
E2
FA1  FA4  FA7  FA10
FA2  FA5  FA8  FA11
FA3  FA6  FA9  FA12
E1
FC1  FC4  FC7  FC10
FC2  FC5  FC8  FC11
FC3  FC6  FC9  FC12

 

So my new disks, still in the box, would be
FA13, FA14, FA15, FA16
FC13, FC14, FC15, FC16

 

What I'm aiming for is:

 

E4
FCn  FCn  mt    FAn
FCn  mt     mt    FAn
FCn  mt     FAn FAn

 

Same for E3, E2 and E1

 

Torsten says, shut down and sort disks.  It will be great if it is as easy as that but which disks go where?

 

giladzzz advises to identify the RSS membership (how?, please) and then two disks in each enclosure - unsure where other disks then go.

 

Sorry if I don't seem to be understanding what you say - can't afford for this to go wrong, of course.

 

TIA,

 

Dave

Torsten.
Acclaimed Contributor

Re: EVA 4400 - horizontal to vertical

Regarding RSS see

 

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=321347&prodTypeId=12169&objectID=c02529561

 

Go to field service page and click

 

Disk Groups and Redundant Storage Sets


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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No support by private messages. Please ask the forum!

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giladzzz
Honored Contributor

Re: EVA 4400 - horizontal to vertical

Hi

First of all the EVA configuration is on the disks this means that if all disks are configured and you power down the EVA and mix them in any order the EVA should come up normally.

as for RSS each disk group is divided into RSS that is groups of disks that are by default 8 and can range from 6 to 12

inside the RSS the EVA spreads the raids. If you open SSSU windows connect to the EVA and do ls disk full from this out put you can see what you need.

rssindex .............................: 0
rssid ................................: 15

That is the rssid is the RSS group and the rssindex  is the member within the group.

Now after you have added your new disks into disk groups and done "ls disk full" you plan where each disk will be seated and then power down your EVA insert the disks according to your plan and power on the EVA.

I hope it's clear now.

Regards