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Storage and Deduplication

Storage and Deduplication

Discuss any topic related to storage or deduplication with fellow community members

621 Topics
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621 Topics

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Lionel DByte

asked in Storage and Deduplication

Robert HorowskiCommvault Certified Expert

asked in Storage and Deduplication

How many DDB partitions are supported on single MA?

I’m a little confused about multiple partitions and or DDBs limitation. There are several places when limits are mentioned like the one and only Hardware Specifications for Deduplication Mode1) https://documentation.commvault.com/11.24/expert/111985_hardware_specifications_for_deduplication_mode.htmlwhich mentions “2 DDB Disks” per MA andConfiguring Additional Partitions for a Deduplication Database2) https://documentation.commvault.com/11.24/expert/12455_configuring_additional_partitions_for_deduplication_database.htmlwhich mentions “30 DDB partitions” per MA.Also, In my recent discussion with PS member I was told that a partition should be treated as DDB itself.All of this creates a lot of confusion likea) is “DDB Disk” the same as DDB?b) is “DDB partition” the same as DDB?If you look at 1) /Scaling and Resiliency there is a informationThe back-end size of the data. For example: Each 2 TiB DDB disk holds up to 250 TiB for disk and 500 TiB for cloud extra large MediaAgent. That means

1 year ago

BloopaByte

asked in Storage and Deduplication

add a FC tape library

Hello Community ! I am trying to add a tape library HP MSL G3 Series to Commvault.I am using the Expert Storage Configuration. i have selected the Two Media agents (they are already zone with the tape libraries)I have followed the procedure. Now it asks if the library have a barcode reader and I don’t know :)can you help me please ? Thanks !

1 year ago

SkarraByte

asked in Storage and Deduplication

Data Domain BoostFS with HyperScale X?

Is it possible to install the BoostFS library on a HyperScale X Media Agent, and if so is it supported?I’m looking to write a additional backup copy to storage outside of the appliance and hope I can do it in a deduplicated manner rather than having to send a full copy to the data domain. The topic of BoostFS is discussed on https://documentation.commvault.com/commvault/v11/article?p=9404.htm#o132281, but nothing specific to HyperScale X and BoostFS at https://documentation.commvault.com/commvault/v11/article?p=128105.htm.Thanks

1 year ago

HenkeByte

asked in Storage and Deduplication

Command syntax explained

Hello,Is there someone that can interpret and let me know my assumption on the switches in the below command to are.-j = jobId-i = Deduplication Partition-c = ??-in = CV Instance-cn = Client-group = ??“C:\Program Files\Commvault\ContentStore\Base\SIDB2.exe -j 0 -i 74 -c 178 -in Instance001 -cn client-server 1 -group 0”Also, if anyone know why the above doesen’t have a JobId, or rather why it’s 0. Is it just an internal thing to the SIDB2 process?I’ve seen the command have -j 0 as well as a -j xyz jobId that is searchable. BRHenrik

1 year ago

downhillByte

posted in Storage and Deduplication

VAST Universal Storage

Has anyone kicked the proverbial tires on this yet either from a NAS or S3 target? Curious to know if CV is qualifying it internally or if it’s on anyone’s todo list.

1 year ago

AZOPSBit

asked in Storage and Deduplication

Change AWS Storage Tier on Existing Copies

Hey Community,2 QuestionsIs it possible to change the AWS storage tier from Glacier to Deep Archive on copies that already exist beside running an aux copy? We ran 7 months of aux copies to Glacier until we were told to send it to Deep Archive.. Now we have 500TB sitting in the Glacier class and of course, costing money. I’ve started the process of just aux coping them, but it is tedious to do one job ID at a time on the Cloud Storage Archive Recall workflow. Is there a way to add multiple job IDs to the workflow?Thanks in advanced~John

1 year ago

ChristoCommvault Certified Expert

asked in Storage and Deduplication

VTL Performance Best Practice

Hi,has anyone experiences with VTL self Deduplication Backup Appliances, like Quantum DXi4800 for Example (smaller Modells ~27 TB)? The deveices are non Deduped backuptargets for commvault. Later Aux-Copy to a physical Tape-Library is performed.I got a Performance Best Practice Guide from Quantum. They said use small cartridge size 50/100 GB (like Ultrium 1) but not how many Tape Deveices in parallel and how this relates in backup and restore performance. To much Tape-Drives maybe slow down the throughput but i have no idea which throughput per drive stream is possible comparred to a physicale tape drive which normaly only receive 100-200mb/s.Would be nice if someone else use this "old"stuff and can explain something in correlation with commvault. My last VTL implementation was 10 years ago.ThanksChristoph

1 year ago

Fernando SouzaByte

asked in Storage and Deduplication

Library cleaning tape procedure

Hello,The customer has purchased a tape library Fujitsu LT20.Is there an automatic tape cleaning procedure?

1 year ago

AviorByte

asked in Storage and Deduplication

Separate T-Log from copy to Auxiliary Copy

Hi Alli have a question for the expert's :) we using Metallic Storage for secondary copy.we backup SQL Instance’s there, with T-Log (lot of jobs) and Daily Full.i want to ask if i can somehow to exclude only the T-Log from going to the Second copy.i want only the Daily Full will go to the Auxiliary Metallic Storage.is it possible? (without create a new policy of course). thanks in advance

1 year ago

DaysAndCycles

posted in Storage and Deduplication

Commvault Official Deduplication Limits

I think there are several deduplication-related subjects that require thorough documentation by Commvault. 1.) There is a long-standing recommendation to limit deduplication database disks to TWO PER MEDIA AGENT.’ I was able to track this recommendation as far back as Simpana 9.0, but I’m not sure if it pre-dates that. This limit feels rather arbitrary, and it doesn’t take into account the performance capabilities of the host platform, or advances in computing kit since the original recommendation was made. I can’t find any references showing WHY such a limit should exist.In my case, I have three Deduplication disks on my media agents (all NVMe SSD), and that runs with zero issues. The Media Agents are spec’d over the recommended Extra Large spec, and they don’t even sweat. I would like to issue a call to Commvault to really explain why this limitation is in place. The Deduplication Building Block section of the documentation would be an ideal place for this information. Th

1 year ago

AnujByte

asked in Storage and Deduplication

is it possible that I restrict commvault to use media from designated slots (not to scan/use all library slots)

I am running a migration from other vendor to CV. For a time being, is it possible that I restrict commvault to use media from designated slots (not to scan/use all library slots). Just to avoid conflict as the tape library would be having CV as well as other vendor media.

1 year ago

drPhilByte

asked in Storage and Deduplication

DDB verification job performance - Verification of Existing Jobs on Disk and Deduplication Database

Hi there,I would like to ask you, in general, which elements are in play during the DDB verification? Is there communication between the DDB database and the disk library during the DDB verification job?In documentation, there is written that "Verification cross-verifies the unique data blocks on disk with the information contained in the DDB and the CommServe database." So, it means that there is communication between media agent and master server… The thing is, that in our case this verification job even Incremental takes a very long time. However, the performance of the disk with DDB database looks quite good.

1 year ago

Fernando SouzaByte

asked in Storage and Deduplication

Create a tape job for new full backup

Hello,I need to create a backup job with all full backups to tape in a physical library(new library) that the customer has purchased.Today all backups are on disk (File Library).After the new Jobs to tape has been succesfully executed (3 backup jobs to tape will be done), i need to erase the full backup, which today is very old and needs to be done a new full backup, because the size will be smaller and will free up more space in disk.Wait guys for the best practices to do this.Another question: i will create the Storage Police for the library with permanente retention and include all tapes in the same SP or create other for example: Database, Exchange, etc.@Mike Struening

1 year ago

CypherOne

asked in Storage and Deduplication

skipping Global DDB creation.

Storage policy creation wizard asks for storage pool creation and global DDB creation. How to bypass this? I don't want to create a global DDB. Commvault is at V11.23.

1 year ago

Karamveer SinghBit

asked in Storage and Deduplication

DDB v4 gen 2 table structure

Hi alli need your help to understand table architecture for Deduplication database v4 gen2 table structure and there functioning. There is as such no information available on documentation explaining current ddb table structure. Please help with the information if possible.

1 year ago

drPhilByte

asked in Storage and Deduplication

Drives in the tape library went offline

Hi there, could you please help me what to do if all drives within the tape library went offline? The offline reason seems to be very strange: [Cannot communicate with Media Mount Manager Service.Please ensure that.a. The MediaAgent is reachable from CommServe.b. All MediaAgent services are running.] A - Checked that MA is reachableB - Checked that all services are running What can help us to make drives online? Also verified in Windows device manager that drives are present and visible.

1 year ago

kszafByte

asked in Storage and Deduplication

Replication performance issues

The AuxCopy task for storage policy takes longer than it should, in the zabbix charts we can see that in certain hours the link between locations (200mbps) is not saturated at all (as if replication stopped / slowed down for e.g. 5 hours).New tasks come and finally replication can take up to ~ 50h (for replication, for example, 2TB - which should be sent in half of this time).

1 year ago

Ken_HByte

asked in Storage and Deduplication

Showing library storage use over time

Hello everyone,At my DR site I use HP MSA disk devices for CommVault backup storage and they are currently over 86% full. I have asked my manager to add the cost of another MSA to the budget and she’s asking for growth rates to ensure that one MSA will be sufficient. I’m searching for that information and am not able to find it even though (I would have thought) that this is a pretty basic information. I did find the “Disk Library Growth Trend” report but don’t trust its numbers as the used space and free space increase at the same time despite the fact that the total storage has remained constant. I’m not sure where it’s getting its information but, well, it just doesn’t make sense. Screen capture below.So my question is: How can I find a storage growth rate to use for media agent capacity planning?Ken

1 year ago

Rajesh KumarBit

asked in Storage and Deduplication

any how i can set a limit Auxiliary copy jobs, once fist 5 jobs get copied then only next copy job should start. Using stand alone tape library

lets say there are 1000 jobs needs to move on tape, i want to take the secondary copy of jobs on date wise it should not pic random jobs for aux copy.

1 year ago

Nedal1993Bit

asked in Storage and Deduplication

Global Secondary Copy policy on CS 11.24

we have commserve version 11.24 and those option in below image are not appears, Why?New Global Secondary Copy policy New Global Deduplication PolicyOld Versionbelow options we have CS 11.24

1 year ago

Nedal1993Bit

asked in Storage and Deduplication

DDB with secondary copy

Hi Commvault Team how DDB works with the secondary copy (New Copy) to another disk library? assuming that we have two sites, each one has its own MA, DDB, Disk pool. and DASH copy is enabled.

1 year ago

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