Vmware Data
Recovery:
VDR - vMware Data Recovery
.OVF
– Open virtual machine formats
What is vMware Data
Recovery
1.
A
new VMware virtualization - Specific Backup and Recovery application for
vSphere 5.
2.
Backup
and restore ESXi guest virtual machines.
Why do we need VDR?
1.
It is not efficient to backup VMs with traditional
backup apps.
2.
Functions
needed
·
Recognition
of VI/vCenter
·
Understand
Advanced virtual features
·
De-duplication
Block-level
·
Insight
in to VMDKs for file restores.
· VDR is available in all versions except Essential Kit
Creating a Backup destination
1.
Local
and network
Local backup is
best performance but data will be in VMDK
2.
Network
share is best option to get data out of VMFS.
|
Local
|
Network
|
|
1 TB Limit
|
500 GB Limit
|
FC Storage:
Fiber channel storage devices house
physical hard drives that make up RAID groups from which logical unit numbers,
or Luns are carved
A Lun- A Lun is a logical allocation of
storage space carved from a set of underlying physical drives that make up a
RAID group.
Zoning:
·
Zoning
is the process of allowing ESXi hosts to communicate with a storage device
through the fiber channel switch.
·
Zones
configured in FC switch define what HBA can connect to what SP and what LUN
·
ESX/ESXi
fully supports SAN multipathing.
|
SAN
|
NAS
|
|
Block
level Access
|
File level Access
|
|
RAW
format
|
Pre formated
|
Installing VMware Data Recovery?
·
Unzip the Appliance
& the plugin
·
Import the Appliance
·
Install the Plugin
& restart vSphere client
·
Configure the VDR
appliance to recognize your vCenter & VI
Creating a Backup Destination - Local and
Network
Creating a VDR Backup Job - step by step
·
Virtual Machines
·
Destination
·
Backup Window
·
Retention Policy
The Gotchasof VMware Data Recovery
·
Ideal for SMB (< 100 VM)
·
Have a few jobs as possible
·
Run backups during the day, if possible
·
All VMs should have VMware Tools Installed
The Gotchasof VMware Data Recovery
·
Limited to 100 VM guests
·
Limited to 2 backup destinations simultaneously
·
Limited to 500GB of de-dup data in backup destination
·
Limited to 8 VMDKs at once
The Gotchas of VMware Data Recovery
·
ESX host CPU must be < 80%
·
Must have 5GB free space on datastore per VM
·
All VMs should be HW version 7 to use block tracking
·
Like VMs should go to same datastore.
Checking Backup Job Status
The
Reports tab is where it's at
Checkout:
•
Events
•
Running
•
Virtual
Machines
•
Warnings
and Errors
•
VDR
Log File under Config Tab
Recovering
/ Restoring an ESX Guest VM
· You
can restore an individual VMDK
· You
can restore a VM to a different name (no overwrite)
· You
can restore with no network or power
Storage
·
“vSphere
provides host-level storage virtualization, which logically abstracts the
physical storage layer from virtual machines.” - VMware FC Documentation
·
VMs
not aware
·
VM
use virtual disks
·
VD's
can be managed easier
·
VMs
use virtual SCSI controllers to see VD
· Each VM, through the SCSI
controller, can access VMFS datastore, NFS datastore, or raw disk (RDM).
· VMFS is the VMware File
System, a specialized virtualization clustered FS - providing distributed
locking
·
VM's
VDs are stored in VMFS Datastores
·
VMFS
could be local, iSCSI, or FC
Storage
· Centralized Storage is
required for advanced features of vSphere like VMotion, VMHA, FT, and DRS
·
Most
of the time, that centralized storage is a SAN
·
SAN
could be iSCSI or Fibre Channel (FC)
·
A
FC SAN packages SCSI commands into FC frames
·
Servers
connect to the SAN using HBA
·
HBA
connect to FC switch
·
FC
switch connects to storage processor (SP)
·
Zones
configured in the FC switch define what HBA can connect to what SP and what LUN
·
ESX/ESXi
fully support SAN multipathing
Understanding iSCSI
Storage
·
iSCSI
(Internet SCSI) is sending SCSI disk commands and data over a TCP/IP network
·
Why
use it?
o
Low cost
o
Use existing hardware
- Ethernet NIC, switch, and OS features
o
Supports almost all
vSphere features
Understanding
iSCSI Storage
·
Downside
- performance? Reliability?
·
iSCSI
Terms:
ü
iSCSI hardware
initiator -a special iSCSI NIC card
ü
iSCSI software
initiator - use your own NIC card and OS iSCSI software
ü iSCSI Target - the server running iSCSI
Understanding iSCSI Storage
·
iSCSI
uses IQN (iSCSI qualified name) to identify iSCSI Targets & Initiators
·
It
is laid out in this format:
ü
date
in year-month format
ü
reversed
domain
ü
a
unique org assigned name (ie: hostname)
ü For
example: 2007-oi.com.wiredbraincoffee:iscsii
Why you need a
Storage Area Network (SAN)
· Justification for a SAN
with vSphere:
§
Maintenance with zero
downtime
§
Load balancing with
VMotion & SvMotion
§
Storage consolidation
and central management
§
Disaster Recovery
§
Simple Array
migrations and storage upgrades
§
Use of advanced
features like HA, FT, DRS, and DPM
§ Datastore = a VMware file system / logical volume - can be NFS
or VMFS and can be located on any supported storage - where your VMs are stored
§ Disk partition = an area on a disk set aside for a datastore
§ Extent = a disk area that can be added to a datastore
§ Fibre Channel (FC) = high speed storage
technology with FC HBA, FC switch, FC SP, and disk
§ Internet SCSI (iSCSI) = SCSI over TCPIP, server
is initiator and storage is the target
§
LUN (logical unit
number) = an address used to
identify a SCSI disk
§
Multipathing / Failover =
allows you to use more than 1 path,
offers failover & redundancy
§
NAS (network attached storage) = networked
disk storage, ESX uses NFS on NAS
§
NFS (network file
system) = a file sharing protocol
used with ESX server (and Unix/Linux)
§
Raw
device mapping (RDM) = a special
type of storage disk where ESX controls disk access
§
Spanned
Volume = a dynamic
volume spread across number of extents
§
Volume = a disk
volume - a logical storage unit
What
is in a Datastore
§
Virtual disk
§
Virtual memory
§
VM configuration file
§
ESX Server service
console VMDK
§
Log files
§
Core Dumps
§
Anything you add,
like an ISO file
ESX
Server Storage Options
·
Local Disk with VMFS
Datastore
·
SAN
ü
iSCSI Software
ü
iSCSI Hardware
ü
Fibre Channel (FC)
·
NAS
ü
NFS
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