Virtualization

Virtualization:

It is a technology that transforms hardware in to software.

VMware V sphere:

It’s an infrastructure Virtualization suits that provides virtualization management, resource optimization application availability operation automation capability.

Virtual Machine:

It is describe set of file for esxi perspective like .vmdk, .nvram,.swap,.log, .vmsn,VMSD ,.vmx …

From user perspective it s just like physical machine.

Movement of p machine is difficult.

Cost benefit

More man power required

We can migrate VM from one location to other

VMware componenet :

ESX,ESXI,VCENTER, Vmware,  virtual SMP , Vmware storage ,VMFS ,Vmware WEB access client.

Subnetting :

Dividing physical network in to logical network by entering one string in the subnet mask

(broad cast IP, Network IP, Network iD ,HOST ID, 32 bit ,)

FSMO: (Flexible Single Master Operation):

There are 5 ROLS available in Active Directory:

1. 1. Schema Master
2. 2. Domain Naming master
3. 3. PDC emulator
4. 4. RID Master
5. 5. Infrastructure Master

First 2 are Forest wide roles and other three are domain wide roles.

In the forest there should be a one Domain control have all 5 five roles that is called as (ROOT Domain) the roles can be moved to other addition domain in the tree

Sub domain has 3 roles each

Root domain roles can move to any one of the domain

Sub domain 3 roles can be move only the same domain.

There are 4 Partition available in the Active Controller:

1. 1. Schema directory partition
2. 2. Configure directory partition
3. 3. Domain directory partition
4. 4. Application directory partition

LDAP port no : 386

Global catalog  Port No 3268 It s contain full write replicate of domain directory partition of the host domain and practical read replica of domain directory partition in the forest.

Schema partition is nothing but CLASS and OBJECTS

Port Group

Segregate type of communication

VLAN:

Logically configured on the switch port to segment of IP traffic .for this happen port must be trunked with correct VLAN id.

Active Directory Service:

It’s and centralize data base.

Workgroup:

We can only change few machine user names password. Objects store in local DB

KDC- Key distribution center. ( For password Attribute)

KERBOSE protocol – For password

Domain:

Collection of computers sharing the same database.

1. NTDS.dit — Active directory DB.

Domain controller:

The Server running a active directory services is called domain controller.

ACL –Access control List

ACE – Access Control entity (read, write,Change)

Groups in Active directory:

1. 1. Global group

The Group can access any resource and any domain but the member can be a local domain

1. 1. Domain local group

The domain local group can have member any domain in the forest but access resource only in the local domain.

1. 1. Universal group

Can have member from any domain resource in the forest and can access any resource in the forest.

Active Directory Backup:

1> User data backup

2> System static backup

Backup type:

1. 1. Full back up  (Normal backup)
2. 2. Copy backup
3. 3. Increment backup (remove attribute)
4. 4. Differential backup (cumulative Backup)
5. 5. Daily backup