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Storage and Deduplication

Storage and Deduplication

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

675 Topics
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675 Topics

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Konstantin UBit

asked in Storage and Deduplication

PatrikCommvault Certified Expert

asked in Storage and Deduplication

Restore from Commcell Migrated Tape Library

Hi, I am performing a Commcell Migration and in the source Commcell there is a TapeLibrary that we need to migrate to the target Commcell. My question is if the historical data will be available for restores (i.e tapes will be migrated/re-labled as well). And if using the option “Allow imported media to be reused on this Commcell” means that append will work once the TapeLibrary is migrated or if it is read only and tapes will be reused (moved to scratch) only once all data on them has expired. Regards, /Patrik

1 year ago

jmiamaralByte

asked in Storage and Deduplication

2 tape libraries 1 scratch pool

Hello, Is there a way i can assign 1 scratch pool to 2 tape libraries? Kind regards,Joao Amaral

1 year ago

Ingo MausByte

asked in Storage and Deduplication

MCSS storage estimation

Hi everyone.how do you estimate MCSS storage requirements? MCSS (cool) would be our customers’ cloud secondary copy in their existing Commvault environment. So there are values available like local block size (128KB), deduplication factor, baseline size and such for estimation We’re seeing around 1.2 to 1.3 x in MCSS demand compared to local disk with customers who set it up recently. As MCSS secondary copies “must have a minimum retention of 30 days", reducing retention (which oftentimes is the customer’s choice for solving storage issues) is apparently not an option here.While of course we cannot provide a 100% estimation, we intend to not be too much off.Thanks.

1 year ago

IggyByte

asked in Storage and Deduplication

Aux Copy between CommCells

Hello.Is it possible to have aux copies configured between different CommCell entities?Same company but different business units in different buildings requiring offsite backup copies but is trying to make use of the infrastructure of the other already existing in their environment.This is probably possible when installing a second instance on the existing MA but will require separate disk libraries entities at that site.Thanks.Iggy

1 year ago

Baba ImaniByte

asked in Storage and Deduplication

Best Way to Confirm Combined Storage Tiers Functioning

What’s the easiest way to confirm a Cool/Archive cloud library is working? I have migrated data from a Hot storage blob container. I provisioned an additional storage container as Hot in Azure and provisioned it as Cool/Archive as recommended by Commvault. I attempted a restore of a file from this Archive library and the restore just completed as normal without the use of a workflow so I’m worried the data isn’t in the Archive tier as expected. Any ideas how to confirm the data is actually in Archive and Metadata is in Cool? And why was the restore just standard?

1 year ago

MubaraqByte

asked in Storage and Deduplication

Adding extra drives to existing tape library issue

Hello, EveryoneHow are you, today?I have a problem i am trying to resolve. I don't know if anyone can be of help.So, this customer has a tape library with 3 drives but 5 slots. They had 3 existing 3 drives which is running fine. They just added 2 more drives to be configured. I have been trying to detect and configure the drives but i can see them (it says undetected, unconfigured). It says SCSI adapter has been removed, Please go to property page to select the right scsi. Can you help, please? Eventually i detected and configured one of the drives, but can’t detect the last one. During the detect an configure scan, the 5th drive shows but in the data path and library, it does not show.

1 year ago

Eduardo BragaByte

asked in Storage and Deduplication

Is it worth deduplicating Transactional Logs?

We think that there is no real benefit for the Commvault to deduplicate Transaction Log data. Maybe some compression benefit, but today we deduplicate practically everything. I started another topic (Difference between Incremental Storage Policy and Log Storage policy) to ask about the differences between Log Storage Policy and Incremental Storage Policy. The idea is to have a specific Storage Policy for Database Agents Transactional Logs with deduplication disabled. By examining some backups jobs, we noticed that Savings Percentage comes entirely from Compression. Due to its nature, It seems that there is no gain when deduplicating variable data like Transactional Logs. By disabling deduplication for those data, in theory, we can keep DDB smaller and reduce Q&I times. Am I right?

1 year ago

AsyrafBit

asked in Storage and Deduplication

Chunk files being unique and only readable per Commvault CCID

Hi,I’m looking for a statement or write-up state that commvault CCID is unique for customer. Any Commvault customer backup data cannot be read by different CCID. Something like their data encrypted or tied by their CCID. Thanks.

1 year ago

Eduardo BragaByte

asked in Storage and Deduplication

DDB Lookup and Source side disk cache

Can the use of source-side disk cache theoretically reduce the DDB lookup of data protection jobs? Clients and MA are on the same LAN.

1 year ago

virgilByte

asked in Storage and Deduplication

Hardware encryption on LTO

Hi I would need feedback on the impacts of enabling Commvault harware encryption on LTO.- Slowdowns ?- CPU load ?- Volumetry in addition to be expected ?- and more…Thanks a lotregards

1 year ago

christopheByte

asked in Storage and Deduplication

what type of Cloud library for Scality ?

Hi,i have a question about the creation of a cloud library.We have a scality ring as a backend. We have select S3 compatible storage for create the library.in the documentation i found the below information :For another vendor that supports Amazon S3 such as Scality, you must select Amazon S3 from Type, and then, under Access Information, enter the credentials of that vendor.i have a doubt about selecting amazon S3 in the type of cloud library instead of S3 compatible storage because i tried to create a cloud library for testing in amazon s3 type. the request of creating the library don’t work.please adviceKind regards,

1 year ago

FlickerBit

asked in Storage and Deduplication

Anyone using SMB for mountpaths on Linux media agents?

Hello, We have an environment that was originally set up with Windows media agents, but as it has grown we have added some Linux media agents as Data Movers. CommVault will let me share the mountpaths with these Linux media agents but it will not let me run a “move mountpath” from a connected CIFS UNC path to a locally-mounted NFS volume on a Linux media agent, so it concerned me that it would let me share them with a Linux media agent if it was mounted as a local path. That being said, I was wondering if anyone else is successfully accessing mountpaths over SMB/CIFs using Linux media agents? (SMB path mounted to local directories on the Linux media agents and accessed/shared-to as local paths on the Linux servers, i.e. \\sancifsservername\mysharename via network path on Windows servers, and mounted to local directory as local device on Linux servers.)Thanks all!Pat

1 year ago

christopheByte

asked in Storage and Deduplication

how to limit network peak ?

Hi,We have some issues with our use of our cloud backend (scality ring).When running backup or data verification the request send by the media agent create some peak of use on the juniper switch (QFX 5100). that causing drop of packet and in result in commvault error reading chunk. we have multiple bad chunk alerts.the network team ask us to set a limitation of the network bandwith to limit peak on juniper switch.how can it be possible to limit the bandwith between media agent and cloud librairies ?kind regards,

1 year ago

HenkeByte

asked in Storage and Deduplication

DDB and Bitlocker

If we have an existing DDB on a drive for a media agent and that drive gets encrypted with Bitlocker does that cause a problem?My thought is that it isn’t since all reads/writes are happening inside the server. There might be a performance penalty though. Or am I totaly wrong?//Henke

1 year ago

DanielDai

asked in Storage and Deduplication

where to config "preferred setting" in the "Select mount path for MediaAgent according to the preferred setting" of the Library properties

I’d like to consult where to config “preferred setting” mentioned in “Select mount path for MediaAgent according to the preferred setting” option of the library properties? thank you in advanceBest regards

1 year ago

LaurentByte

asked in Storage and Deduplication

My daily incremental DDB Verification job uses more than the max streams / readers

Hi !I’ve noticed a strange behaviour of a daily DDB incremental verification job, normally set to 30 readers, but getting much higher than this since a few days.. See below How can this be possible ? I thought that the limit was.. a limit So, what has changed ? Well, not sure it is related, but since sept9, I upgraded from v11FR21HP20 to v11FR21HP53, and no other change.The Gridstor of 4 hosting this DDB also host another DDB, whose verification job runs without getting (or printing only) the maximum 30 readers limits. That’s a bit annoying because the first job goes pending for a while with : Error Code: [19:1105]Description: No Resources Available. Please check the Streams tab for details. Of course no ressources are available, as it’s trying to allocated more than 30.. A few details about this job and blocks to process : Should I log a case or, have you already been used to such ?

1 year ago

TheseekerByte

asked in Storage and Deduplication

Local MA RAID Died; taking both DDB and Index cache with it along with the data;

This is just a question about how we could have better way to rebuild MA. We have a windows based local ma and the data is aux copied to another media agent at a secondary site (different city);The RAID on the local MA was returning errors; so we replaced one of the faulty disk which caused the whole raid configuration to fail. We had to rebuild the whole virtual disk again. Unfortunately since there were only 3-6TB disks; everything OS/DDB/IndexCache/Libraries were in the same Virtual disk and we lost everything. Since we had a copy of the backup data at the secondary location; the quickest way was to rebubuild the MA. The RAID controller was not showing any error; and it was not feasible to send another MA to the site due to lockdown So we rebilt the virutal disk again; installed/upgraded OS to Windows 2019; kept the same hostname/ip configuration; installed Commvault agent and it made the MA online on Commserve. created index cache and DDB added the new mount path in the

1 year ago

MansoorByte

posted in Storage and Deduplication

Please help to understand media agent with deduplication. Unable to understand Commvault documentation link

Please help me to understand commvault media agent with deduplication

1 year ago

neuwiesenerByte

asked in Storage and Deduplication

Decommisioning a DDB to reclaim space on the DDB SSD

We want to use space on an SSD for a new DDB (horizontal scaling) and the old DDB is not being used. It only has jobs with long term retention as it was used for file archiving(onepass). The onepass jobs are not active anymore. Data only needs to be restored. If Commvault doesnt need the DDB for restores, how can I get rid of the DDB as we dont have any backups running.Sealing could be an option. However BOL mentions:The sealed DDB is automatically deleted only after all the jobs (with their data block signatures stored on the DDB) are aged or deleted and the corresponding volumes are deleted from the disk.So the DDB is required for purposes other than the backup. https://documentation.commvault.com/commvault/v11/article?p=12591.htmFor now we will be moving the partition to a different drive. Any ideas?

1 year ago

SSchmidtCommvault Certified Expert

asked in Storage and Deduplication

DDB Sealing and new version

Hi All, we have an running DDB from 2018. We have Running 11.24.12 as Version on all Mas and Cs. After we sealed thed DDb have the new one the latest DDb version 6 automactially ?

1 year ago

ApKByte

asked in Storage and Deduplication

Restore from offsite private cloud with no direct connection

Hi All. I have a question regarding restore of data which resides on a offsite private cloud where clients have no access. Setup is:On prem Client network with servers in backup.→ Firewall in between with port open for backup traffic.On prem Backup network with MediaAgents and storage.→ Firewall in between with port open for aux copy data.MediaAgents with offsite private cloud storage containing Aux copies of client data. Clients do not have access to the offsite MediaAgents/copy, so my question is, how do I make a restore of data from the offsite cloud, when the On prem clients and the offsite MediaAgents cannot talk to each other directly? Is it possible to route restore traffic via the on prem MediaAgents acting as a proxy some how? Would the network gateway via outgoing routes be the solution? Any suggestion would be appreciated. Thanks for helping.-Anders

1 year ago

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