Having Problem When Click "Check For Updates"

Showing error - "windows update cannot currently check for updates because the service is not running. you may need to restart you computer"


Try:

Click Start

Type: cmd 

Right click on cmd in start menu and select 'Run as Administrator'

Type: net stop wuauserv 

Hit Enter

Type: ren c:\windows\SoftwareDistribution softwaredistribution.old 

Hit Enter

Type: net start wuauserv 

Hit Enter

Type: exit 

Hit Enter

Attempt to download updates

RAID 0, RAID 1, RAID 5, RAID 10

RAID stands for Redundant Array of Inexpensive (Independent) Disks. 

On most situations you will be using one of the following four levels of RAIDs. 

• RAID 0 
• RAID 1 
• RAID 5 
• RAID 10 (also known as RAID 1+0)

In all the diagrams mentioned below: A, B, C, D, E and F – represents blocks p1, p2, and p3 – represents parity 

RAID LEVEL 0


Following are the key points to remember for RAID level 0. 

• Minimum 2 disks. 
• Excellent performance ( as blocks are striped ). 
• No redundancy ( no mirror, no parity ). 
• Don’t use this for any critical system. 

RAID LEVEL 1 


Following are the key points to remember for RAID level 1.

• Minimum 2 disks.
• Good performance ( no striping. no parity ).
• Excellent redundancy ( as blocks are mirrored ).

RAID LEVEL 5


Following are the key points to remember for RAID level 5.

• Minimum 3 disks.
• Good performance ( as blocks are striped ).
• Good redundancy ( distributed parity ).
• Best cost effective option providing both performance and redundancy.
• Use this for DB that is heavily read oriented.
• Write operations will be slow.

RAID LEVEL 10


Following are the key points to remember for RAID level 10.

• Minimum 4 disks.
• This is also called as “stripe of mirrors”
• Excellent redundancy ( as blocks are mirrored )
• Excellent performance ( as blocks are striped )
• If you can afford the dollar, this is the BEST option for any mission critical applications (especially databases).

Saya Kembali...

As-salam...

Sekian lama menyepikan diri, kini saya terpanggil untuk melihat kembali blog yang telah lama ditinggalkan. tetapi setelah membaca post2 lama, saya terpanggil untuk menyambung kembali menjadi blogger.

Walaupun banyak ketinggalan dan banyak idea dibazirkan begitu sahaja, ianya tinggal kenangan dan tidak dapat di imbas kembali kerana tidak dicatat.

Akhir kata selamat kembali kepada diri sendiri...

unidentified Network Problem

The issue is that the ROUTE table contains a phantom persistent default route 0.0.0.0 to one of the network interface cards.  

This activates the "Unidentified Network" (Public) every time the network connection becomes active.  

Sharing permissions are turned off.

My solution is to use the Windows Command Screen as Administrator and remove all default routes.

OPEN CMD USING ADMINISTRATOR PRIVILEGE

TYPE THIS COMMAND

=>   ROUTE DELETE 0.0.0.0

=>   IPCONFIG /RENEW

This removes the default routes from all network interfaces.  

You must then reapply the necessary default routes to your interfaces (Do not use address of the network adapter as the default).  

If you have an isolated network (without any router, firewall, or gateway) with more than one computer -- I do this in a development laboratory -- is to choose for default address for Vista, 2008, Win-7, to be the IPv4 address of any other attached network interface.

I don't know why Microsoft deciced to make the default routes 0.0.0.0 persist in the routing table instead of just being bound to the network adapter.  

The network stack used by XP, 2000, 2003 systems do not have this problem. 

IBM MegaRAID BIOS Config Utility RAID - 0 Configuration

Here is how to do this on an IBM System x3650 server with four 300GB SAS hard disks.

During the system boot you will be given the following options.



You will select the “Diagnostics” (in this case using F2 key) and when MegaRAID is loaded you can use “Ctrl+H” key combination to enter the WebBIOS configuration utility.



From the above capture you can also see that there is no virtual disk configured and the controller detected four JBOD disks.
When you enter the utility, you will have the ability to select the adapter you want to configure. In our case we only have one adapter so it is very straightforward.



Next, we have the MegaRAID BIOS configuration main menu for the selected adapter.



From the main menu you select option “Configuration Wizard” and you will get the following screen.



From the above configuration types, we select “New Configuration” since there is no prior configuration. This can also be used if you want to replace the existing configuration with a new one. Before proceeding you will get a warning that this selection will erase the current configuration as shown below.



Next, you select the hard disk drives you want to add to the RAID array. To select more than one press CTRL key. In our case all four disks will be selected in order to implement the RAID-10 level.



In the next window you will have to select “Manual Configuration” if you want to create a RAID-10 array.



Below you select (once again using CTRL key) the first two disks and click “Add To Array” in order to add them to the “Drive Group0″ on the right side panel.



After adding the first two disks you click on “Accept DG” to complete the setup of this drive group and create a new one.



Follow the same procedure and add the other two disks to the new drive group and then click “Accept DG” and “Next” to continue.



You add the two newly created arrays to a span by selecting each one of them and then clicking on “Add to SPAN”.



And as you can see below, the selected RAID level is 10. Here you can tune your RAID-10 configuration and when you are ready you click on “Update Size” and then “Accept” button.



Finally, you can continue by hitting “Next” and after the usual warning messages and final review of the configration, the RAID will start initializing.



On the bottom right you have some additional options that you can use but in any case, when the initialization process is completed the RAID-10 virtual disk will be ready to use.