How do you check deduplication ratio in NetBackup?
On the Edit menu, select Change. In the Change Storage Server dialog box, select the Properties tab. The Deduplication Ratio field displays the ratio.
How does deduplication work in NetBackup?
With media server deduplication, the NetBackup client software creates the image of backed up files as for a normal backup. The client sends the backup image to a media server, which hosts the plug-in that duplicates the backup data.
What is client side deduplication NetBackup?
With NetBackup Client Direct deduplication (also known as client-side deduplication), the client hosts the plug-in that duplicates the backup data. The NetBackup client software creates the image of backed up files as for a normal backup.
What is the utility used for data deduplication in NetBackup?
The spadb command line utility that lets you use the NetBackup Deduplication Manager (spad) to set WORM for an LSU and define the WORM mode and the interval for making the image immutable and indelible. The Deduplication Manager reads the WORM mode from the /etc/lockdown-mode. conf file file.
How is deduplication ratio calculated?
It is calculated by dividing the total capacity of backed up data before removing duplicates by the actual capacity used after the backup is complete. For example, a 5:1 data deduplication ratio means that five times more data is protected than the physical space required to store it.
Which of the following is a deduplication ratio of 2 1?
If a vendor cites a 50% capacity savings, it’s equivalent to a 2:1 deduplication ratio. A ratio of 10:1 is the same as 90% savings. That means that 10 TB of data can be backed up to 1 TB of physical storage capacity. A 20:1 ratio increases the savings by only 5% (to 95%).
Which action is performed by the NetBackup deduplication plug in?
file fingerprinting calculations
The deduplication plug-in compares the file fingerprints and the segment fingerprints against the fingerprint list in its cache. The deduplication plug-in performs file fingerprinting calculations.
What is deduplication ratio?
A data deduplication ratio is the measurement of data’s original size versus the data’s size after removing redundancy. Data deduplication is the process that removes redundant data before a data backup. The data deduplication ratio measures the effectiveness of the dedupe process.
How do you manually start SLP duplication?
- Inactive the SLP’s you want to suspend.
- Either withdraw those images from SLP control, simply, nbstlutil cancel ……
- If you do step 2, then proceed for manual duplication via NBU.
- If you skip step2 & 3 – Now, active the SLP suspended from step1.
- Either wait for the nbstserv to load the next set of batch.
What is a NetBackup storage server?
A storage server is a NetBackup media server that mounts the disk storage and writes data to and reads data from the disk storage. For AdvancedDisk, NetBackup media servers function as both storage servers and data movers.
How do you calculate deduplication?
Which will affect the deduplication ratio?
Several factors influence deduplication ratios, including: Data backup policies: the greater the frequency of “full” backups (versus “incremental” or “differential” backups), the higher the deduplication potential since data will be redundant from day to day.