Some people have a bad habit of taking control of DRAC access and locking their workstation . If someone want to have access they have to wait till gentleman comes back and provide him so. One way its good but other way its frustrate other.
We can forcibly take control of session by resetting the console access . You can do this at your own risk :) . Launch the weblogin and press the tab "Reset iDRAC6"
Installing XenServer is quite simple but option on Dell remote control access controller is little tricky. First we should insure that virtual media is attached by default it will be Detach as shown below.
Launch the Dell virtual console in order to map the ISO . 
Attach the media virtual media using "Virtual media wizard" as shown below
Browse and assign the media using ISO image 
Change the boot order to boot from the "Virtual CD"
This will bring the boot menu which will guide step by step to install XenServer 6.0.2
Select the Keymap which is mostly US
This will bring welcome screen
Accept the license agreement .
It depends what you want to . We are performing clean installation
This will detect the local hard drive where you want to install the XenServer . Choose thin provisioning if you want to enable intellicache for XenDesktop.
Installation media will be local media.
Supplement packs are required if you are planning to host linux as a guest VM's or else choose NO.
If you doubts the install media choose to verify or else skip it.
Type the password as Test123 :)
Here you are going to choose management interface. This can be bonded once it is added to the pool using XenCenter.
Choose the timezone which server belongs to not YOU :)
Select the correct country which server is located not YOU :)
Define the NTP server which you have or else choose the manual time entry
Specify the NTP server name or IP address.
Specify the host name and DNS server and continue with XenServer install .
You are all set.
Creating public SSL certificate is 3 step process.
Step 1. Create RSA key: a) Login to NetScaler webpage using 'nsroot' and navigate to SSL section. Highlight 'certificate' and select 'Create RSA key' under SSL keys.
b) This will pop up a window asking for various information :
Key Filename: Can be anything and if you doing for first time no need to select browse .
Key Size : Can be anything in multiple of 1024 but most of the public site accept key size beyond 2048
Public Exponent value: Leave it to default F4
Key Format : Should be PEM unless you want DER format
PEM Encoding Algorithm : DES.
PEM/Verify Passphrase : Can be anything which should be remembered for future use.
Step 2. Create SSL Certificate request : a) Under SSL certificate page ,select 'Create Certificate Request' and this will popup other page
b) This will pop up a window asking for various information :
Request File Name : Can be anything and don't select 'Browse ' or 'View'
Key File Name: Will be from Step 1 (b) .
Key Format : Should be same as step 1 (b)
PEM Passphrase : Should be same as step 1 (b)
Supply rest of the info under "Distinguished Name fields" as required.
Noting is required for "Attribute Fields "
c) Click Create to create the certificate request file.
d) Click Close to close the Create Certificate Request window.
e) Use a program such as WinSCP (http://winscp.net) to copy the CSR to the Local
computer. The CSR file is located in the /nsconfig/ssl directory. This file need to send to
certificate authority like Verizon /Entrust/or Star .
File received from one of the certificate authority as shown below . Select download all the certificate.
Step 3. Navigate through certificate tab and select add . This will pop up the box asking for information like
Certificate-Key Pair name: Provide friendly name
Certificate File name : Which you have received from CA provider . This can be PEM format . You can browse and select upload from local
Private Key File name : This would be from appliance as you have created in Step 1(b) .
Password : Same as step 1 (b) /2(b)
Certificate Format : PEM
You can choose to notify when this certificate is expired .
That's all you have to for creating and installing SSL public certificate. In next blog I will discuss about linking with Virtual servers.
By mistake if you have made changes to management IP address of XenServer while it was in pool , you will land up in weird situation where xsconsole will not show any nic to be configured for management interface as shown below
and this
Where as ifconfig will list all the NIC listed out
Restarting xe-toolstack-restart does not help either and running xe network-list will give message "The host toolstack is still initializing . Please wait "
Infcact running any xe command will throw weird error like "htto_client. Http_request_rejected"
First check the out of xe host-is-in-emergency-mode. If the output is "True" then that is the whole reason of problem. Change this from "True " to "False" by running "xe pool-emergency-transition-to-master".
Rerun " xe host-is-in-emergency-mode" and make sure out is "False". Restart xe-toolstack-restart and wallah you will see all the NIC is back
To me it looks like if you make any changes inside the pool , this my result in .
Following link did provided help.
I was trying to install XenServer on 1TB disk with RAID configure and it was throwing below error message on Dell Rack mounted server.
This can be solved by two way by disabling GPT :
1. Boot from the XenServers 6.0.0 install CDROM.
2. At the Xen 6.0.0 install prompt type menu.c32 and press enter.
3. When you get the new menu screen press TAB
4. add disable-gpt just before the last --- then press enter. The system will go through part of the pre-install boot process. 5. At the bash prompt type "exit".
Installation will continue without any issue
OR
1. Type "shell" at the boot menu
2. Edit the file constants.py under installer location using VI editor 
3. Edit the file and change the value highlighted from True to False and 4096 to 20480 and then exit
4. After existing the vim and boot menu , installation will continue .
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