Custom directive

Hello, ShivaKiran,

Do you know where I can get access to the SDKs for Networker directives? We actually have our own compression and encoding algorithms we wanted to implement by ourselves.

Thanks in advance.

Hi Raymond,

If you are speaking about the sample scripts which can be used as directives, then we do not have sample scripts with us as we donot have create any custom scripts and use the default directives which are enabled with NW package. You have to develop your own scripts and make sure they meet some requirements as mentioned in the admin guide.

Thank you

ShivaKiran

Well, I guess I did not make it clear. Rather than using built-in directives like 'aes' or 'compressasm' we actually would want to develop our own asm, probably from the ground up and unsure if it is do'able.

Thanks in advance.

You can't build own encryption asm. With compressasm in nw8 EMC added support for gzip and bzip2 and for encryption you can use aes (if you use encryption you should not use compression). If you wish to use encryption outside NW, then either this is done at backup target level or network level and as such it is handled outside backup application.

When you say "if you use encryption you should not use compression", where does this come from?

I remembered the same thing, but can't find it documented in the NetWorker 7.6.3 admin guide; it notes to not use compression and PW2, but that is not the same as compression and AES.

Thanks,

Dave

Encryption will give you unique signature and as such there won't be much to compress. Of course, you could turn the table and compress first and then encrypt, but result would be virtually the same as with only encryption.

Hi,

I was thinking exactly that--compress then encrypt. That is what happens if you use LTO drive encryption.

My question was more tailored towards what if officially supported--the admin docs say "no compression and pw", but they don't say anything about "no compression and aes."

So I was looking for whether your info was from an official doc, or just a logical statement.

Thanks for the reply!

Dave

I think I have tried every way of using compression and encryption together in Networker, including making my own directive and none worked with any significant compression. I eventually decided to just encrypt with Networker and let the hardware do the compression.

Larry Alexis wrote: I think I have tried every way of using compression and encryption together in Networker, including making my own directive and none worked with any significant compression. I eventually decided to just encrypt with Networker and let the hardware do the compression.

In never versions you can use gzip - if that one doesn't compress, perhaps you are trying to compress something which simply does not compress well?  Of course, if using HW compression, forget about client side one.