Hi,
LANfree data transfer is a way to transfer big amount of data faster than over traditional LAN.
Such as storing data directly to tape media or as you mentioned using Spectrum Scale storage.
Using deduplication with compression is a way to reduce the amount of data needed to be transferred.
But it still requires to read all data to detect which part can be reduced using deduplication
If the amount of similarities is high, than the deduplication reduction will be high, and the remaining data that will be sent will also be lower.
The drawback with deduplication is that it can use more resources to read the data as it might go faster than sending all data
The faster it goes to backup data, the more resources is needed to read all data, the more impact it will have to the overall performance of the applications.
There are other ways to protect huge amount of data.
Traditionally applications requires periodically full backups, which can take a long time to backup data, especially if the volume is big.
What if one can take the benefits of using always incremental backup of applications too?
Is that possible?
- yes, with application consistent snapshots one can send incremental block changes using progressive allways incremental backups.
- The first backup will be a full copy of all data
- All other backups will be sending the block changes since last backup using a built in OS journal to detect the block changes
How aboiut restore?
- restore is nearly instantly.
- the volume is provisioned directly from the Spectrum Protect server storage as a snapshot volumes to the operating system
- the OS volume will immediately start to restore the volume in the background while the volume is fully operationable
- the application can use the OS volume, start up it's databases, and perform normal operations while restoration is performed in background by the operating system
- when all data has been restored, the provisioned volume is no longer in need, and will disappear from the OS
Take a look at spictera solutions, they have interesting solutoins that improves data protection for Spectrum Protect.
Using SPFS might also improve data protections of transactional data, if it is possible to integrate the transactional copy process with Spectrum Protect.
For example Oracle, PostgreSQL, DB2, Progress OpenEdge 4GL, ...
Let me know if you need some more advice
Regards Tomas
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Tomas Dalebjörk
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Original Message:
Sent: Wed December 23, 2020 09:26 AM
From: Largou walid
Subject: Deduplication : Spectrum Protect LAN-Free using Spectrum Scale
I want your advice regarding an architecture we are willing to push for one of our customer. We have acquired Spectrum Protect and Spectrum Scale for LAN-Free Backups.
As I checked using LAN-Free is not supported with container pool storage, so we will not benefit from inline deduplication and we need to go with File legacy deduplication.
I wanted to know what are the tradeoff of using this topology. And what is the difference between the two types of deduce :
- Deduplication ratio : Do we have the same dedup ratio from container and file storage pools
- Performance : Doing inline dedup involves some impact on performance, is it more efficient to do post-dedup
- Any other consideration
Thank you
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Largou walid
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