VIO BASICS

VIO
IT IS ALSO ONE LPAR, IT ALLOWS SHARING OF PHYSICAL RESOURCES BETWEEN LPARS(AIX)
MAX FOR M.M ARE 4

MIMIMUM REQUIREMENTS TO CREATE A LPAR

·                     cpu

·                     memory 

·                     i/o devices

PHYSICAL RESOURCES
predefined resources(inbuilt)

SHARED RESOURCES
resources used by several lpars

DEDICATED RESOURCES
entire processor is allocated for single lpar

VIRTUAL RESOURCES
it tells to o.s howmany physical processors it thinks it has.

LOGICAL RESOURCES
logical processor count is based on smt enable/disable

HMC
it is a linux based software to allocate resources between lpars
each hmc can support for 48 manage machines

MANAGE MACHINE
it contains the sources(cpu,memory,i/o)
it is connected to one or two hmcs

POWER HYPERVISER
it is a service proGRAM which is used to allocate resources between lpars

NVRAM
it is a part of manage machine it contains lpar configuration information.power hypervisor use this information to allocate resources.

FSP
manage machine and hmc are connected to it through adapter

SMT
two or more hardware threads run simultaneously on a single processor at a time

Partition profile 
each partition is having atleast one profile.it contains information about resources 

System profile
collection of partition profiles is called s.p

Partition activation

·                     through partition profile

·                     through system profile

Manage machine activation

·                     partition standby

·                     system profile 

·                     partition auto start 

·                     hardware discovery

dlpar
using this we can add/remove/move the resources
DEMONS:
IBM.DSRM
IBM.DRM
CTRMC
LSPARTITION -DLPAR

LUN MAPPING:
WE NEED CREATE ONE VIRTUAL SERVER SCSI ADAPTER IN SERVER SIDE,IT IS CREATED AS VHOSTN
WE NEED CREATE ONE VIRTUAL CLIENT SCSI ADAPTER IN CLIENT SIDE ,IT IS CREATED AS VSCSIN
AFTER THAT WE NEED TO EXECUTE COMMAND CFGMGR
AFTER THAT BY CHECKING DISK AVAILABILITY WE NEED ALLOCATE A DISK FOR CLIENT
MKVDEV =VDEV DEVICENAME -VADAPTER VIRTUAL SERVER SCSI ADAPTER -DEV VTDNAME 

SEA
it acts as a bridge between physical and virtual networks
vio version 1.2 onwards
requires power hyperviser and advanced power virtualization feature

Pvid and vlanid
SINGLE NETWORK IS DIVIDED INTO MULTI NETWORKS LOGICALLY
PVID:IT IS DEFAULT VLANID

ether channel
two or more physical adapters grouped together to act as an logical adapter to provide fault tolerance and to increase high speed links between switches and networks

HEA
JUST LIKE SEA IN VIO  IN P6 MANAGE MACHINE

IVE
JUST LIKE SEA IN VIO IN P5 MANAGE MACHINE

asmi:
 THROUGH ASMI WE CAN CHANGE MANAGE MACHINE NAME
 WE CAN POWER ON AND POWEROFF MANAGE MACHINE
 WE CAN CHANGE LMB SIZE
 WE CAN GET RESOURCES INFORMATION(CPU,MEMORY) 
WE CAN CHANGE THE FIRMWARE LEVEL
we can see errlog info
vpd and fsp info
we can know deconfigured cpu&memory
we can change the m.m ip address

STEPS TO CONFIGURE CLUSTER

Ø  Define a cluster

Ø  Configure hacmp nodes

Ø  Configure hacmp networks

Ø  Configure hacmp communication interfaces

Ø  Give persistent ip address

Ø  Add on application

Ø  Add a serviceip address

Ø  Create an RG

Ø  Add RG attributes

Ø  Sync the cluster info of node1 to node2

Ø  Start cluster services

CLUSTER MAIN POINTS

TYPES OF CLUSTERS

Active-passive

Active-active

Concurrent multiactive

SERVICE IP

It acts as a alias ip

BOOT IP

Original ip on the interface

PERSISTENT IP

Used for administration purpose

RG POLICIES

Startup

Fail over

Fall back

IP ADDRESS TAKEOVER

Ipat via aliasing

Ipat via replacement

CLUSTER FILESETS

Mentioned in other place

C-SPOC

Provides facility for performing common cluster admin tasks from any node with in cluster

VG ,LV,FS CREATION

Smitty c-spoc

VG TYPES

Nonconcurrent

Concurrent

Enhanced concurrent

CLUSTER SHUTDOWN TYPES

Graceful

Graceful with takeover

Force

RG STATES

Online

Offline

Releasing

Acquiring

Resource group types

Cascading

Rotating

Concurrent

CLUSTER LOG FILES

Hacmp.out

Cluster.log

Cluster.cspoc

Clverify.log

Clcomd.log

CLUSTER DEMONS

clcomdES

clinfoES

clstrmgrES

ctrmc

Dms:

    It is kernel extension which alts the node when enter into the hung state,that extends beyond a certain time limit. It enables the another node in the cluster to acquire the hung node resource in a orderly fashion

Reasons:

·                     Clstrmgr may be starved of cpu

·                     Excessive i/o traffic on a disk

·                     Excessive tcpip traffic over on a interface

Dare:

    Using this we can change the cluster configuration dynamically

Can:

·                     We can add/remove node

·                     We can add/remove interface

·                     We can add/removbe network

Can’t

·                     Changing the cluster name

·                     Changing cluster nodename

·                     Changing rg name

·                     Changing apps server name

DIFFERENCES BETWEEN AIX 5.3 AND 6.1

5.3                                                                              6.1

1.             Default filesysytem type is jfs                               1. Default filesystem type is jfs2

2.             It doesnot contain /admin filesystem                   2. It contains /admin filesystem

3.             Default kernal is 32bit                                             3.default kernal is 64bit

4.             It doesnot support for lpm                                    4.it supports fopr lpm feature

5.             It contains ML mechanisem                                  5. It doesn't contain ML mechanisem

6.             Recent TL is 12                                                       6. Recent TL is 9

7.             We need install nmon feature                              7. Nmon is a default feature init

VIO ACRONYMS

VIO                              :       VIRTUAL INPUT OUTPUT SERVER

LPAR                           :       LOGICAL PARTITION

PPAR                          :       PHYSICAL PARTITION

HMC                            :       HARDWARE MANAGEMENT CONSOLE

DLPAR                        :       DYNAMIC LOGICAL PARTITION

SEA                             :       SHARED ETHERNET ADAPTER

MPIO                           :       MULTI PATH INPUT OUTPUT SERVER

NPIV                            :       NETWORK PORT ID VIRTUALIZATION

LPM                             :       LIVE PARTITION MOBILITY

VLAN                           :       VIRTUAL LOCAL AREA NETWORK

PVID                            :       PORT VLAN ID

FC                               :       FIBER CHANNEL

FSP                             :       FLEXIBLE SERVICE PROCESSOR

SMT                             :       SIMULTAENOUS MULTI THREADING

NVRAM                        :        NON VOLATILE RAM

HEA                             :        HOST ETHERNET ADAPTER

IVE                               :        INTEGRATED VIRTUAL ETHERNET ADAPTER

HA                               :        HIGH AVAILABILITY

CMP                            :        CLUSTER MULTI PROCESSING

C-SPOC                     :        CLUSTER SINGLE POINT OF CONTACT

DMS                            :         DEAD MAN SWITCH

DARE                          :         DYNAMIC AUTOMATIC RECONFIGURATION

DR                               :         DISASTER RECOVERY

ASMI                            :         ADVANCED SYSTEM MANAGEMENT INTERFACE

API                               :         APPLICATION PROGRAMMING INTERFACE

SAN                             :           STORAGE AREA NETWORK

VPD                             :           VITAL PRODUCT DATA

IDE                              :           INTEGRATED DEVICE ELECTRONICS

IPAT                            :           IP ADDRESS TAKEOVER

LUN                             :            LOGICAL UNIT NUMBER

LDAP                           :            LIGHTWEIGHT DIRECT ACCESS PROTOCOL

LED                             :           LIGHT EMITTING DIODE

LMB                             :           LOGICAL MEMORY BLOCK

RDAC                          :           REDUNDANT DISK ARRAY CONTROLLER

RAID                            :           REDUNDANT ARRAY OF INDEPENDENT DISKS

VTD                            :           VIRTUAL TARGET DEVICE