Deduplication using Netbackup 7.1.0.2 (MSDP)

[Vino_J]

HI All,

We have set up a de-dupe test domain and configured MSDP. The deupe storage pool is of the size 90TB. While checking the guide , the maximum size supported by dedupe on 7.x version is mentioned as 32 TB. Please let us know if we will have to reduce the disk pool size/it would still work if data exceeds 32 TB of size.

Server details:

Master Server : NBU-7.1.0.2 /Windows 2008 R2 Enterprise edition SP1

Media Server: NBU-7.1.0.2 /Windows 2008 R2 Enterprise edition SP1

Thanks in advance!!!

[Mark_Solutions]

Anything above 32TB is unsupported at V7.1, anything above 64TB will be unsupported in 7.5

Based on the 1GB RAM per TB De-Dupe it would need 90GB RAM even if supported

I suggest deleteing it and starting again - you would never get any support on this and it would be likely to fall over eventually even if it worked to start with

Hope this helps

[Marianne · Accepted solution]

Upgrade to NBU 7.5.

Improved MSDP capacity of up to 64TB.

see p. 18 of this 'What's New' doc: https://symantecevents.verite.com/media/NetBackup%207.5%20Presentation.pdf

–Deduplication: Continued delivery of Deduplication Everywhere strategy including improved WAN resiliency built into the NetBackup client and doubling of MSDP scale to 64TB – driving freedom of storage choice.

Remember that MSDP works with a single LUN only. Do you really want to add a LUN of 90 TB on Windows?

[Vino_J]

Thanks for your suggection.We have 128GB of RAM available in the Media Server. In this case would it be a problem.

[Vino_J]

We have alloacated 3 luns of 30 TB and have created a single drive using Software RAID-5 and have configured the Deduplication disk pool. Would it work in our case. We have rubn two sets of backups and we find they are working fine as of now.

[Mark_Solutions]

Vino

It may work but for how long?

if it all falls over you will have no chance of recovering anything and will certainly not get any support from Symantec

If you are on 7.1 then you can only use 32TB as the max, if on 7.5 then 64TB is the max

My reccomendation is to rebuild and use the maximum allowed according to your version - no good having 90TB of backups on disk if it all suddenly corrupts!

[Yogesh9881]

Is master & media server physically different or they on same box ?

[rizwan84tx]

From reading the above post from experts, your answer is to go for NBU 7.5.

[rizwan84tx]

Hi Vino,

Please mark the one of the either post by Mark or Marianne as solution, so that it will be helpful for others.

[Vino_J]

We have upgraded the NBU version to 7.5.0.1. Thanks Mark & Marianne for your inputs on this!!!