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BladeSystem - General
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P class Blade enclosure

 
MAH_2
Regular Advisor

P class Blade enclosure

Hi, The p class enclosure is installed with 8 blade servers. When I removed the Power source B from blade power enclosure, half of blade servers power down automatilly. Why it is not taking the power from the power source A.
11 REPLIES
Sobhan Majumder
Occasional Advisor

Re: P class Blade enclosure

Hi Lichel,

Probably you are using Enhanced Server Blade Enclosure instead of Standard Server Blade Enclosure.

The enhanced server blade enclosure comes with split power backplane which is able to separate the DC power into the right and left sides of the server blade enclosure so that half the blades in a server blade enclosure are powered by side A (bays 1 â 4) and half by side B (bays 5 â 8).

The standerd server blade enclosure comes with shared power backplane which distributes power from each side (A and B) of the power supply enclosure across all ten bays of the server blade enclosure.

For getting more information over HP Blade P-class power solution you may go through this link
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00301687/c00301687.pdf
MAH_2
Regular Advisor

Re: P class Blade enclosure

Hi, How can I identify this enclosure enhanced or standared?
Koopa
Frequent Advisor

Re: P class Blade enclosure

The Enhanced enclosure, has a ILO port on the back of the management module. The standard does not.
Adrian Clint
Honored Contributor

Re: P class Blade enclosure

Or pull a power cable out .... half the blades will power off. Ooops you already did that one.
MAH_2
Regular Advisor

Re: P class Blade enclosure

I want the all servers to be working when I removed the second power source. Please tell me solution .
Sobhan Majumder
Occasional Advisor

Re: P class Blade enclosure

You need to add an additional power enclosure with power supplies.
Please go through the document. It is clearly mentioned over there "Because the enhanced server blade enclosure splits the DC power into the left and right sides of each server blade enclosure, customers must use two power enclosures to configure AC line cord redundancy".
SoorajCleris
Honored Contributor

Re: P class Blade enclosure

Hi Lichel,

I don't think you need another powersupply for this.

Which is your power supply ? 1U or 3U

Is that a 3 phase powersupply or a single phase one?

Howmany powersupplies are populated?

If you have 6 powersupply populated in the powersupply enclosure, you can have a power supply redundancy configuration N+N so that your requirement will be done.

This can be done using Powermanagement console.



Regards,
Sooraj
"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity" - Dennis Ritchie
MAH_2
Regular Advisor

Re: P class Blade enclosure

I have single phase 3 U enclosure. It is having six slots for power supply . But we r using 4 P.S.
Dhanesh Amirthalingam
Regular Advisor

Re: P class Blade enclosure

hi lichel

Item Description Configuration
1 Power supply bay 1 Bus A
2 Power supply bay 2 Bus A
3 Power supply bay 3 Bus A
4 Power supply bay 4 Bus B
5 Power supply bay 5 Bus B
6 Power supply bay 6 Bus B
HP recommends installing hot-plug power supplies in a
redundant configuration. To implement a redundant
configuration, populate one or more of bays 1 through 3 and an
equal number of bays 4 through 6 with power supplies. For
redundant AC power, bays 1, 2, and 3 must be supplied AC power
from a different branch circuit than bays 4, 5, and 6. Each bay
must be supplied 200 to 240 VAC, 50 to 60 Hz, single-phase AC
power. Ensure that adequate capacity is available on each branch
circuit to handle the peak current demands of a fully populated
HP BladeSystem 1U Power Supply Enclosure when attached to a
fully populated server enclosure.
Sobhan Majumder
Occasional Advisor

Re: P class Blade enclosure

Hi Lichel,

You can try the HP BladeSystem p-Class Sizing Utility. It is a free tool available on the HP website. It provides valuable information for planning, ordering components, and preparing a site for delivery and installation of HP BladeSystem solutions. The user enters the desired server blade and enclosure configurations, chooses interconnects, and enters data center power information. Based on this user input, the Sizing Utility then calculates and displays:
â ¢ Maximum power specifications.
â ¢ Heat generation and cooling requirements
â ¢ Summary table of server blade components in the rack (server blades, memory, processor, etc.)
â ¢ Number of power supplies and power enclosures needed for both redundant and non-redundant power configurations
â ¢ System weight
â ¢ Equipment list

Link : http://h71019.www7.hp.com/ActiveAnswers/cache/347628-0-0-0-121.html
SoorajCleris
Honored Contributor

Re: P class Blade enclosure

Hi Lichel,

In my last reply there was a mistake.

you need one more single phase 3U power supply to meet your requirement as this is an enhanced P Blade enclosure.

As you told "It is having six slots for power supply . But we r using 4 P.S. ".

You are using a 3U single phase power supply enclosure. In this 3rd and 6th slote will not be populated and it cannot be used.

This slots are used in 3phase 3U enclosure.

Simply,

You may install one more 3U single phase powersupply and give power from different sourse.

you may see the page 11/22 , the diagram is given in the pdf.( same path is given by Sobhan also)

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00301687/c00301687.pdf

Regards,
Sooraj U

"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity" - Dennis Ritchie