NEED SOLUTION FOR STORAGE ISSUE

[zama]

Dear all,

Can you please give the soution

I want to take backup of edms on HP  tape-Library(6480) around 6 TB from symantec netbackup applaince 7.6.

How much time it takes to complete the backup.

[sdo · Accepted solution]

Depends upon your tape drive models, how many there are, how fast your disks and SAN and NICs and servers are.  In fact this is a wild guess, but a signle stream sustained at 140 MB/s would take 12.5 hours.   If your 'client' is only on a 1Gb/s network, then it will take considerably longer.

Is this a oneoff job, or a new regular backup?

For a client this size, it may be worth making it what we call a SAN Media Server, which is effectively a backup client which is also a NetBackup Media Server - so that it can backup itself directly to some kind of storage.

Here's some very rough numbers:

6.0	TB
6,144.0	GB
6,291,456.0	MB
140.0	MB/s
44,939.0	sec.s
12.5	hours

[sdo]

You may be able to break the backup job up in to multiple pieces or streams, and if going directly to tape, then you may be able to achieve a full backup in just a few hours.

What form is the data in?   Flat files?  Millions of them?   Or a database of some sort?  MS SQL?  Oracle?

Is the backup client Windows or Linux or Unix?

[zama]

Clent : Linux

Millions of files.

[sdo]

Ok client is Linux.  But which Linux, and which version?

If you have several large branches in your folder tree then you may be able to backup these millions of files using a multi-streamed backup policy with different streams saving different branches of teh folder tree.

However, you may achieve must faster backups if you use 'FlashBackup'.

When you say NetBackup Appliance v7.6 - there is no such thing.  Is your appliance version 2.6.0.1 or 2.6.0.2 or 2.6.0.3 or 2.6.0.4 or 2.6.1 or 2.6.1.1 or 2.6.1.2 ?

[zama]

linux version : 2.6.16

appliance : 2.6.1

[Marianne]

Apologies, but I am battling to understand what this means:

I want to take backup of edms on HP  tape-Library(6480) around 6 TB from symantec netbackup applaince 7.6.

Is my understanding correct that 'edms' is Electronic Document Management Systems on a Linux server?

Is this already being backed up to NBU Appliance? 
And you now want to duplicate the Appliance backups to 'HP tape-Library(6480)'? 

What does backup policy look like?
Standard (or other) policy type?
How many backup streams?
With or without client side dedupe?
With or without Accelerator?
 

What does your backup connectivity diagram look like?

How many tape drives in tape library?
Which model tape drives?

How are tape drives physically connected?
To a media server?
To the Appliance?
How many tape drives per hba?

Which model Appliance?

What buffer sizes are being used?

All of the above will play a role in backup or duplication speed...

There is no way that we can even guess without detailed info of your environment.

[sdo]

You say:   "linux version : 2.6.16"

Which Linux?