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Storage and Deduplication

Discuss any topic related to storage or deduplication best practices

  • 898 Topics
  • 4,100 Replies

898 Topics

P
Byte
Peter RuppByte
asked in Storage and Deduplication

Synth Full on Seconday Copy Storage Policy

Hi,we backup a File Server in China with Inc. On Saturday there is synth Full.The Aux Copy of the Synt Full ( 1.8 TB )( to Germany is really slow.Can i schedule the Synt Full on the secondy Storage Policy ?In China always incremental, aux copy to germany and then in germany the Synt Full.We need a full for the tape backups.RegardsPeter Rupp

3
Scott Moseman
Vaulter
2 years ago
S
Byte
Sudharshan KumarByte
posted in Storage and Deduplication

Double DeDupe for Aux Copy?

Is there any reason we are doing the Double Dedupe for Aux Copy(DASH Copy)? What is the benefits for us.   

6
Scott Moseman
Vaulter
2 years ago
Henke
Byte
HenkeByte
asked in Storage and Deduplication

Cloud library advice for Commvault?

I’ve looked at the list of destinations for cloud library and didn’t find Azure Gov. Cloud. We currently use Azure but will move to Azure Gov Cloud.Can I create a Cloud library in Azure Gov by just choose Azure and change the url? Or isn’t Azure Gov Supported as destination? BRHenke

5
P
Vaulter
2 years ago
V
Byte
virgilByte
asked in Storage and Deduplication

schedule aux copy on except days

Hello,I would like for weekly tape backup jobs to create an exception the first 3 days of the monthFor that I created an exception (except for 1, 2 and 3 firt day on month) in the auxiliary copy to tape task in schedule policyhowever I have pending jobs not copied on October 02 in the weekly storage policies, which I don't wantI opened a case (incident 211005-210), the support told me that it was logical because implemented at the level of storage policiesHow could I prevent the weekly backup copies from not being done every 1, 2 and 3 of each month ?is it possible to configure it ?thanks a lot.

8
V
Byte
2 years ago
K
Bit
Konstantin UBit
asked in Storage and Deduplication

Backup to cloud

Dear colleagues,We have been using CommVault Simpana for many years. And currently we are looking for a solution how we can backup our data to cloud with Simpana. I mean that target of backup will be AWS, Azure or any others cloud providers. I found in the documentation that backup to cloud is possible for CommServer DR, but what about production data?Note: We are looking options for BACKUP to CLOUD (where backup destination is CLOUD) but NOT backup of the CLOUD (where CLOUD is backup source)!I would appreciate any information on this topic.Thanks!

2
K
Bit
2 years ago
G
Byte
Gabriele PalumboByte
asked in Storage and Deduplication

Delete multiple VTL Media Content

Hi,Is it possible from CLI to delete the content of multiple Media at the same time?In the commcell console only one media is possible at a time.  Thanks

3
P
Vaulter
2 years ago
S
STR
asked in Storage and Deduplication

Adding new Library to deduplication database

Hello, We have created a new library. we were trying to associate it to an existing deduplication engine (new data path) but its not avaiable.Can anyone help understand why? Regards,

9
Mike Struening
Vaulter
2 years ago
A
Byte
AmitByte
asked in Storage and Deduplication

identify the database backups (sql, oracle, db2 etc)

Hello All, I want to identify whether all database backups are included in monthly backup with long term retention. Is there any way to generate a report which contains database nodes with monthly backup status.  Thanks Amit

1
Mike Struening
Vaulter
2 years ago
P
Commvault Certified Expert
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

3
Mike Struening
Vaulter
2 years ago
J
Byte
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

12
J
Byte
2 years ago
I
Byte
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.  

11
I
Byte
2 years ago
I
Byte
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
Mike Struening
Vaulter
2 years ago
B
Byte
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? 

6
Mike Struening
Vaulter
2 years ago
M
Byte
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.

8
Mike Struening
Vaulter
2 years ago
E
Byte
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?  

4
Mike Struening
Vaulter
2 years ago
A
Bit
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.

4
Mike Struening
Vaulter
2 years ago
E
Byte
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.    

2
Scott Moseman
Vaulter
2 years ago
V
Byte
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
Mike Struening
Vaulter
2 years ago
C
Byte
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,

6
C
Byte
2 years ago
F
Bit
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

2
F
Bit
2 years ago
C
Byte
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,

2
C
Byte
2 years ago
Henke
Byte
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
Damian Andre
Vaulter
2 years ago
D
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

9
D
2 years ago
L
Byte
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 ?

2
L
Byte
2 years ago
T
Byte
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

3
Mike Struening
Vaulter
2 years ago

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