AIX - LPAR / DLPAR
We can configure LPAR and DLPAR in P690 Servers,
LPAR (Logical partitions)
In single server we can install multiple operating systems, like AIX 5.1, AIX 5.2, AIX 5.3, Susi Linux, AIX 4.3, and using LPAR concept
The above Os are installing in single server, before that we have to partition the hardware resources, like processors and memory, Harddisk,
Using HMC (Hardware Management Console) we can partition and operate the LPAR servers
If you have one P690 server with 16 CPU’s and 16GB Ram, in this server we can make 16 partitions,
Now each partitions has 1 CPU and 1GB Ram,
If one particular Os assigned for 500 users that time we have to assign additional hardware resources to that partition, online we can assign the hardware resources using HMC. No need to reboot the server, this concept called DLPAR (dynamic Logical Partition)
Like this we can create the LPAR / DLPAR
HMC - it is a desktop pc (Linux OS) connected with P690 server through Communication (com port) cable or RJ45 Ethernet cat cable
Using HMC we can Create, Delete, and Change the Logical Partitions
This LPAR server has hypervisor Controller, all the information’s stored in this hypervisor, and it is used to maintain the server
Accessing methods:
1. wsm (Web based system management , using this concept we can access the LPAR servers from windows desktops)
2. ssh (Secured shell, using this concept we can access the LPAR servers through telnet)
Tuesday, May 12, 2009
Cloud Computing an overview.........
Cloud computing is a computing paradigm in which tasks are assigned to a combination of connections, software and services accessed over a network. This network of servers and connections is collectively known as "the cloud." Computing at the scale of the cloud allows users to access supercomputer-level power. Users can access resources as they need them. (For this reason, cloud computing has also been described as "on-demand computing.")
This vast processing power is made possible though distributed, large-scale cluster computing, often in concert with server virtualization software, like Xen, and parallel processing. Cloud computing can be contrasted with the traditional desktop computing model, where the resources of a single desktop computer are used to complete tasks, and an expansion of the client/server model. To paraphrase Sun Microsystems' famous adage, in cloud computing the network becomes the supercomputer.
Cloud computing is often used to sort through enormous amounts of data. In fact, Google has an initial edge in cloud computing precisely because of its need to produce instant, accurate results for millions of incoming search inquries every day, parsing through the terabytes of Internet data cached on its servers. Google's approach has been to design and manufacture hundreds of thousands of its own servers from commodity components, connecting relatively inexpensive processors in parallel to create an immensely powerful, scalable system. Google Apps, Maps and Gmail are all based in the cloud. Other companies have already created Web-based operating systems that collect online applications into Flash-based graphic user interfaces (GUIs), often using a look and feel intentionally quite similar to Windows. Hundreds of organizations are already offering free Web services in the cloud.
In many ways, however, cloud computing is simply a buzzword used to repackage grid computing and utility computing, both of which have existed for decades. Like grid computing, cloud computing requires the use of software that can divide and distribute components of a program to thousands of computers. New advances in processors, virtualization technology, disk storage, broadband Internet access and fast, inexpensive servers have all combined to make cloud computing a compelling paradigm. Cloud computing allows users and companies to pay for and use the services and storage that they need, when they need them and, as wireless broadband connection options grow, where they need them. Customers can be billed based upon server utlilization, processing power used or bandwidth consumed. As a result, cloud computing has the potential to upend the software industry entirely, as applications are purchased, licensed and run over the network instead of a user's desktop. This shift will put data centers and their administrators at the center of the distributed network, as processing power, electricity, bandwidth and storage are all managed remotely.
This vast processing power is made possible though distributed, large-scale cluster computing, often in concert with server virtualization software, like Xen, and parallel processing. Cloud computing can be contrasted with the traditional desktop computing model, where the resources of a single desktop computer are used to complete tasks, and an expansion of the client/server model. To paraphrase Sun Microsystems' famous adage, in cloud computing the network becomes the supercomputer.
Cloud computing is often used to sort through enormous amounts of data. In fact, Google has an initial edge in cloud computing precisely because of its need to produce instant, accurate results for millions of incoming search inquries every day, parsing through the terabytes of Internet data cached on its servers. Google's approach has been to design and manufacture hundreds of thousands of its own servers from commodity components, connecting relatively inexpensive processors in parallel to create an immensely powerful, scalable system. Google Apps, Maps and Gmail are all based in the cloud. Other companies have already created Web-based operating systems that collect online applications into Flash-based graphic user interfaces (GUIs), often using a look and feel intentionally quite similar to Windows. Hundreds of organizations are already offering free Web services in the cloud.
In many ways, however, cloud computing is simply a buzzword used to repackage grid computing and utility computing, both of which have existed for decades. Like grid computing, cloud computing requires the use of software that can divide and distribute components of a program to thousands of computers. New advances in processors, virtualization technology, disk storage, broadband Internet access and fast, inexpensive servers have all combined to make cloud computing a compelling paradigm. Cloud computing allows users and companies to pay for and use the services and storage that they need, when they need them and, as wireless broadband connection options grow, where they need them. Customers can be billed based upon server utlilization, processing power used or bandwidth consumed. As a result, cloud computing has the potential to upend the software industry entirely, as applications are purchased, licensed and run over the network instead of a user's desktop. This shift will put data centers and their administrators at the center of the distributed network, as processing power, electricity, bandwidth and storage are all managed remotely.
Monday, May 11, 2009
AIX - Performance Monitoring - I/O Bound
AIX - Performance Monitoring - I/O Bound
Using iostat command we can monitor the I/O bound
In this I/O bound we can monitor the disk usage, If you are using two or three heavy used file system in one PV that time that particular PV usage will be very high
Using iostat command we can monitor the I/O bound
In this I/O bound we can monitor the disk usage, If you are using two or three heavy used file system in one PV that time that particular PV usage will be very high
AIX - Performance Monitoring - Network Bound
AIX - Performance Monitoring - Network Bound
Using topas command we can monitor the network bound, in this network monitor we can find KB in and KB out process.
Using topas command we can monitor the network bound, in this network monitor we can find KB in and KB out process.
AIX - Performance Monitoring - Memory Bound
AIX - Performance Monitoring - Memory Bound
Using vmstart command we can monitor the memory bound
#vmstart 2 3
After this command execution, it will show the memory page in and page out process. Within 2 seconds, 3 outputs is displayed
If you are checking paging space usage using command lsps
#lsps –s
11% - this is normal
40% - Server running on slow performance
70% - users cannot logon the server,
Some error message will appear (fork exist failed)
Using vmstart command we can monitor the memory bound
#vmstart 2 3
After this command execution, it will show the memory page in and page out process. Within 2 seconds, 3 outputs is displayed
If you are checking paging space usage using command lsps
#lsps –s
11% - this is normal
40% - Server running on slow performance
70% - users cannot logon the server,
Some error message will appear (fork exist failed)
AIX - Performance Monitoring - CPU Bound
AIX - Performance Monitoring - CPU Bound
Using Topas command we can check the server performance monitor, the following things we can monitor.
1. processor (CPU Usage)
2. Network (KB in / KB out)
3. Memory (Page in / Page out)
4. I/O (HDD read and write)
5. Top 8 process
Using Topas command we can check the server performance monitor, the following things we can monitor.
1. processor (CPU Usage)
2. Network (KB in / KB out)
3. Memory (Page in / Page out)
4. I/O (HDD read and write)
5. Top 8 process
AIX - Performance Monitoring
AIX - Performance Monitoring
In performance monitoring the below operations can be performed.
1. Cpu bound
2. Memory bound
3. Network bound
4. I/O bound
In performance monitoring the below operations can be performed.
1. Cpu bound
2. Memory bound
3. Network bound
4. I/O bound
Sunday, May 10, 2009
AIX - Rewind, Eject, Erase the tape
AIX - Rewind, Eject, Erase the tape
Using tctl command we can rewind, eject and erase the tape drive.
#tctl –f /dev/rmt0 rewind (To rewind the tape)
#tctl –f /dev/rmt0 eject (To eject the tape)
#tctl –f /dev/rmt0 erase (To erase the tape content)
Using tctl command we can rewind, eject and erase the tape drive.
#tctl –f /dev/rmt0 rewind (To rewind the tape)
#tctl –f /dev/rmt0 eject (To eject the tape)
#tctl –f /dev/rmt0 erase (To erase the tape content)
AIX - Restore the non rootvg backup
AIX - Restore the non rootvg backup
Using restvg command we can restore the non rootvg backup
#restvg –xdf /dev/rmt0
After command execution datavg backup restored to server with same name while importing vg we can change the vg name.
Using restvg command we can restore the non rootvg backup
#restvg –xdf /dev/rmt0
After command execution datavg backup restored to server with same name while importing vg we can change the vg name.
AIX - Backup the non rootvg backup
AIX - Backup the non rootvg backup
Using savevg command we can backup the non rootvg backup
If your server has 3 volume groups
#lsvg
Rootvg
Datavg
Oraclevg
#
Now you want to take datavg backup, then your command will be
#savevg –if /dev/rmt0 /datavg
#savevg –ief /dev/rmt0 /datavg
Datavg volume group is backup to tape
NOTE: While taking restvg backup we can exclude unwanted file systems in backup process. If you not required following file systems in mksysb backup,
/var – log files
That time you should put entry in /etc/exclude.datavg,
Using savevg command we can backup the non rootvg backup
If your server has 3 volume groups
#lsvg
Rootvg
Datavg
Oraclevg
#
Now you want to take datavg backup, then your command will be
#savevg –if /dev/rmt0 /datavg
#savevg –ief /dev/rmt0 /datavg
Datavg volume group is backup to tape
NOTE: While taking restvg backup we can exclude unwanted file systems in backup process. If you not required following file systems in mksysb backup,
/var – log files
That time you should put entry in /etc/exclude.datavg,
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