networker ndmp backup

8/15/2019 NetWorker NDMP Backup

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NDMP Overview

The Network Data Management Protocol (NDMP) is a

network protocol that specifies the data exchange method

between the various components of a backup solution.

NAS Device

bongo

bongo

NetWorker

Server


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Command

NetWorker Server

bongo

Client

flute

Storage Node

soprano

Backup Data

Tracking Data

NFS mount NAS Device

Two choices:

1. Tape dump

2. NFS mount

Backing Up NAS Devices without NDMP


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What Does NDMP Do?

NDMP Command

NetWorker Server

bongo

Backup Data

Tracking Data

NAS Device


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NDMP Tape Service

alto

NetWorker Backup with NDMP

NetWorker Server

bongo

Backup DataTracking Data

Host running NDMP

NAS Device

Tracking Data

Backup Data


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NDMP Hosts: Data Service Provider (DSP)

Reads from disk and produces NDMP data stream (backup).

DMA

sonata aria

NDMP Tape Service

alto

Data Service

Provider (DSP)

Receives data stream and writes to disk (restore).


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NDMP Hosts: Tape Service

sonata aria

Receives NDMP data stream and writes to tape (backup).

alto

Data Service

Provider (DSP)

NDMP Tape Service

DMA

Reads data from tape and writes NDMP data stream (restore).


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NDMP Backup Types: Local Example

Enables backup and recovery using a

locally attached tape device or library.

DMA

sonata aria

DSP/NDMP Tape Service

Command Request

Tracking Data

Backup Data


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NDMP Backup Types: Three Party Example

Enables backup and recovery

between 2 NDMP servers. One server is the Data Server.

The second is the Tape Server.

The third party is the backup

software (DMA).

DMA

sonata

DSP

aria

NDMP Tape Service

alto

Command Request

Tracking Data

Backup Data


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NDMP Backup Types: Remote Example

DMA + SnapImage

sonata

DSP

aria

Enables NDMP backup and recovery using a

tape device connected to the DMA.

Command Request

Tracking Data

Backup Data


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NDMP Versions

Version DescriptionVersion 1 Supports local backups only

Version 2 Support for three-party, remote, and

MD5 authentication

Version 3 Tape to tape data movement (cloning),

disk to disk data movement (no file-type

device), NT Namespace support, DAR

Version 4 Improves session management and

security.


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Configuring the Schedule Resource

Create an NDMPschedule.

NDMP supports full

level and level 1-9backups.


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Configuring the NetWorker Client Resource

Remote user

Password

Backup command

NDMP

Application info


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Configuring the NetWorker Client Resource

Storage node

For a local backup at the

filer, the Storage nodes

list must include thehostname of the filer.

Remote access

Remote access will need to

include a user/system that will be

used to initiate a recovery.


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Configuring Save Sets

All - Backs up all filesystems.

Individual save sets can also bespecified.

Save sets are backed up

sequentially.

Save set attribute


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Configuring Remote User

Backup Command nsrndmp_save must be used instead ofsave

More parameters must set according to the

filer’s OS

Manufacturer Backup Command

EMCnsrndmp_save -T dumpnsrndmp_save -T pax

NetApp nsrndmp_save -T dump

SnapImage nsrndmp_save -T image


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Configuring Remote User

EMCFILES=./

TD=cx t y lz

UPDATE=yUPDATE=y

DIRECT=yDIRECT=yDIRECT=y

OPTION=nt

JB=c x t y lz

REMOTE=y REMOTE=nREMOTE=n

HIST=yHIST=yHIST=y

DDIMAGE=yDDIMAGE=yDDIMAGE=y

NetApp EMC SnapImage

Application InformationSee the table below and the Administration Guide

You will find a

full description in

the NetWorker Administrator's

Guide .


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Application Parameters

DDIMAGE

- Defines whether you want to backup all but only the used blocks of a

partition.

Y saves all blocks

N saves used blocks only (sparse backup)

DIRECT

- Defines DAR support Y must be used if you want to use DAR recoveries later.

N If you do not want to use DAR recoveries, set the value to n

.

HIST

- Defines whether Index data shall be saved as well. If missing, only fullrecoveries can be made.

Y saves index data at the end of the backup

N does not save NetWorker index information


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REMOTE

- Defines whether local or remote tape drives (relative to the NetWorkerserver) are used

N Use drives attached at the NetWorker server

Y Use drives at the filer or a remote storage node

UPDATE

- Defines whether the time stamp on the filer will be updated after thebackup

Y must be used if this parameter is used

Application Parameters


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Volume

(Pool: Default)

(Name: Default.001)

Label

32 K

Label

32 K

E n d o f F i l e

E n d o f F i l e

C h u n k

E n d o f F i l e

E n d o f M e d i a

64 K

E n d o f F i l e

M o r e d a t a …

Media

Record

Media

File

Media

Record

Media

Record

Media

File

Media

Record

E n d o f F i l e

E n d o f F i l e

C h u n kNetWorker Tape Format

NDMP Tape Format

Label

32 K

Label

32 K

64 K

E n d o f F

i l e

E n d o f F

i l e

S t a r t N o t

e

E n d N o t e

S t a r t N o t

e

E n d N o t e

E n d o f M e

d i a

NDMP Save

Set Data

NDMP Save

Set Data

NDMP Tape Format


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Auto-detecting NDMP Devices: inquire


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Scanning for an NDMP Device

NDMP

Remote user

Password

NDMP filer needs

storage node resource


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NDMP Device Resource

Target sessions=1

NDMP = Yes

Remote user

Password

Max sessions=1


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Performing NDMP Recoveries

Recovery

Type

Interface Command

Line

File-Level

(Browsable)

nwrecover (UNIX)

NetWorker User

(Windows)

recover

Save Set nwrecover (UNIX)

NetWorker User (Windows)

recover


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networker ndmp backup

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