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Storage and Deduplication

Discuss any topic related to storage or deduplication best practices

  • 1,106 Topics
  • 4,762 Replies
1106 Topics
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SANAdminsByte
asked in Storage and Deduplication
Using ExaGrid - Slow Restore Performance / SynFull Performance / DDB Maintenance Issues

I have been working with ExaGrid support on slow restore speeds for about 10 weeks now and we cannot seem to figure out why the restore speeds are so slow. We are talking 10 hours to restore a single VMDK just to the Media Agent (as we are eliminating the overhead from VMware at the moment) to the high-speed disks on a Windows Server 2022 MA. These are brand-new and before with Windows Server 2012, we didn't have any issues. It seems that we are getting extremely slow READ performance when going back to the ExaGrid. All backup jobs seem to work fine - we even moved the ExaGrid nodes to the same VLAN as the MAs to eliminate any network issues - but please keep in mind we are using Cisco ACI so everything is software-defined. Moving them to the same VLAN actually DECREASED backup performance by 30% - we know this from using iPerf and TCP dumps. Setup: ** 4 x MAs - all running Windows Server 2022 with separate physical volumes for the DDBs and Indexes. ** The DDBs are partitioned across a

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Sam NguyenBit
asked in Storage and Deduplication
How Commvault check Exagrid's Point intime recovery

Like Commvault, Exagrid has Point intime recovery itself. But i dont know how it work when using Commvault + Exagrid. In Exagrid I recover data at a time but when go to Commvault, all data showed is not change anything

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Mohamed Nabil
asked in Storage and Deduplication
DDB verification job failed due impersonate user

Hello, we have an issue with DDB verification job it shows the below error 2964 22d0 09/08 11:02:46 676720 Verification failed with error [751][Library [HQ_DB_ExaLibrary], MediaAgent [AUBEGHQBKPEXGM3], Drive Pool [], MountPath[\\ip address\HQ_DB1\3DFVM3_09.04.2024_13.51]: Cannot impersonate user. User credentials provided for disk mount path access may be incorrect. Advice: If the issue persists, please upload log files from CommServe, MediaAgent and Client and contact your vendor's support hotline with the job ID of the failed job.]. the scenario is that we have 3 media agents with shared mount paths between them due exagrid best practices and im sure the user account is correct

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SANAdminsByte
asked in Storage and Deduplication
Synthetic Full Errors

Is anyone else getting this error message every time their SynFulls run? 11.36.46 I want to say this stuff started happening when we moved from Server 2012 to 2022, but I don’t think that’s my problem. Windows Server 2022 - CS, MAs, VSA Proxies Every time the SynFulls run, most of them sit there in a Waiting status, yet there is always a single stream that shows Active (some over 24 hours) and always throw this error message, which was supposedly fixed a few MRs ago: Error Code: [19:1926] Description: Some jobs were skipped due to read errors. Will retry after some time. Source: bccmvcs01, Process: JobManager I’m not doing anything special with them. They are Continuous and do a SynFull every 7 days. Any help would be greatly appreciated. I remember when SynFulls would just run, and very quickly I might add, but now they just queue up and eventually finish after a looooong time. We have 4 MAs - each with a piece of the DDB partition. Not sure what other details you may need, but feel f

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syedameerdxcBit
asked in Storage and Deduplication
azure blob lifecycle management for Commvault backup

Hello everyone, In our backup environment, we have a CommServe and a Media Agent. We are currently using two policies: Policy A: Basic retention of 35 days. Policy B: Basic retention of 35 days, with extended retention: Monthly for 365 days and Yearly for 15 months. Backup Targets: Primary: Data Domain Secondary: Auxiliary copy to Azure Blob (combined storage tier Cool /Archive ). Since our data is on the Archive tier, restores are taking hours to rehydrate and restore. Therefore, we have decided to disable the combined storage tier and use container default (Cool). We plan to change the storage class to Cool and retain only basic retention backups in the Cool tier. We want to move any extended retention data to the Archive tier. Is this possible using Azure Blob Storage lifecycle management? Additionally, once the data is moved to the Archive tier based on the lifecycle policy, will it impact the auxiliary copy? We use Deduplication with DASH enabled. Thank you for your insights!

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drPhilByte
asked in Storage and Deduplication
NDMP Netapp backup - volumes/shares and storage snapshots

Dear Commvault experts! Could you please explain the differences between backing up NDMP NetApp volumes/shares and backing up NetApp storage snapshots? I ask because there are two different types of users involved: An NDMP user responsible for managing the NDMP connection. A separate user under array management responsible for snapshot creation. Additionally, NDMP storage snapshot backups can function even when NDMP NetApp share backups fail. Could you clarify why that is? Your explanation would be greatly appreciated!

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Robert Horowski
Commvault Certified Expert
Robert HorowskiCommvault Certified Expert
asked in Storage and Deduplication
DDB Priming with Auxilary Copies

Hi, I’m working on a new design which will consists of several ROBOs and 1 DC which will act as DRC for branch offices. Each ROBO should have local MediaAgent with primary copy and replicate to DRC as secondary copies. In this design I would like to Protect customer data against Ransomware using WORM Lock on Disk libraries. This will require DDB Sealing and periodic Full Jobs to be transferred to target DRC site which can be a lengthy process consuming a lot of resources. To mitigate that, I’ve been looking into DDB Priming feature which seems like a perfect solution for this issue. I run a simple test in my lab: Create a primary storage on MA1 Create a secondary storage on MA2 Run Full backup on client Run Aux copy, note the “Data Transferred on Network” Seal DDB on secondary target Enable DDB Priming on secondary target Run Full backup on client Run Aux copy, note the “Data Transferred on Network” Comparing this numbers it’s obvious that data are transferred again between primary and

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Robert Horowski
Commvault Certified Expert
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AlexisByte
asked in Storage and Deduplication
Unable to Restore Backups After Reinstalling and Renaming Client

Hi Commvault Community, I’m having an issue restoring backups from a previously licensed machine. Here’s what happened: I removed the license from my client. Then I formatted the machine. I reinstalled the OS but assigned a different hostname. I installed the Commvault agent again. In the CommCell Console, the system now shows up as a new client, even though it's the same physical machine. My goal is to restore data that was backed up before the format. However, I’m unable to access the previous backups from the new client. As a workaround: I created a virtual machine that replicates the original configuration of the machine before the license was removed — same hostname, OS version, install path, etc. Still, I’m unable to access or restore the previous backup data, even from the VM. I’ve attached a screenshot showing the backup history that was completed successfully before the changes. I need assistance with: Accessing previous backups from the old client. Understanding if it's possi

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Farmer92Byte
asked in Storage and Deduplication
VMware SAN transfer backups about 25% slower after 11.36 upgrade

About 3 weeks ago we upgraded from 11.28 to 11.36. Since then our VMware SAN mode (Fiber Channel) backups on average are 25% slower. Has anyone else run into this? I can see the slow down in the job run times and throughput, as well a looking at my Fiber Channel SAN ports. Here is a screen shot of the SAN port performance for the last year. The ports in the chart are only used to pull the VMware backups from our ESX environment. The spikes are the full backups each weekend. We can see the last 3 weekends have been much slower than the trend was before that. Was there changes to the VDDK or some other related piece of the backup?

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yamric
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yamricByte
asked in Storage and Deduplication
Duplicate Barcode Tapes

I have tapes coming back from Fe.Mtn which have duplicate barcodes. one tape is from our old Networker environment and the other from Commvault. Is there a way to use the “cv tape tool” to see the content on the tapes before I start the restore operation?

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yamric
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Ahmed ElbablyByte
asked in Storage and Deduplication
Replace a Tape Library with a new one and migrate the tapes to the new TL

Dear Vaulters, We have implemented a new Tape Library(LTO9) to replace the old one(LTO8), our aim is to move the old tapes to the new Tape Library after decommissioning the old Tape Library to be able to restore the data from old tapes. My question is what is the action plan to make old tapes readable from the new Tape Library and what would happen during the restore from the old tapes. Appreciate your support & BR

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Vaulter
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NorthBit
asked in Storage and Deduplication
Mix tape media type on the same subclient

Wonder if one subcilent can use different tape media, for example, mixing LTO8 and LTO9 on one subclient. Thanks, S.

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downhill
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downhillByte
asked in Storage and Deduplication
decrypt processes

Hi, I have noticed aux copies and such taking longer and longer since either moving to 11.32 or 11.36, can’t tell when exactly this started. But now I see loads of decrypt processes running on the MA’s and TTBOMK we’ve not changed copy settings or anything to say “re-encrypt” data, yet that’s what appears to have happened during the leap from 11.28 to .32 and then .36. I hadn’t spent much time thinking of this until recently and now it’s clear the MA’s are spending loads of cycles apparently re-encrypting stuff during aux copies. Does anyone know if some fundamental change was made if you had encryption enabled but same strength that would cause so much extra processing to need to be done? Could it be due to different block sizes on the data paths between the global copy settings? thanks!

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downhill
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Base64
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Base64Byte
asked in Storage and Deduplication
Restore o365 content from tape

Hello, I have a question. Is it possible to restore Teams/Sharepoint or oneDrive content from tape? I can't browse the tape in Java GUI and I can't select the precedent in the command center. Is there any way to do a restore from tape?

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Nikos.Kyrm
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Kumar DevarajByte
asked in Storage and Deduplication
SAP HANA error[hdbsql execution failed. 447: backup could not be completed.

Error Code: [18:146]Description: SAP HANA Error [hdbsql execution Failed. 447: backup could not be completed: [110090] Error while backing up backup catalog, [110508] Backint exited with signal 15, No additional Information was received, [110203] Not all data could be written: Expected 4096 but transferred 0 SQLSTATE: HY000].Source: shansvl01, Process: ClHanaAgent

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rbhowmikBit
asked in Storage and Deduplication
Need help in HPE Nimble Storage Array integration with Commvault

As you can see if we enter any random credentials, it is getting accepted. How can we validate that if we provide the original credentials of our HPE Nimble Storage Array, it will integrate successfully with Commvault?

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CV_GK
Vaulter
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evgenichByte
asked in Storage and Deduplication
Rolling back Disk Library with DDB

Hi everyone, If a snapshot of the disk library cannot be restored / reset. Is it possible to simply change the path, or does CommVault need the exact path? Can this be changed at all and does CommVault have a problem with this? Relative or absolute path? How exactly does the restore work if we go back to an older snapshot? What happens to the dedup databases if the disk library is set back by 3 days, for example? Keyword consistency of the dedup databases. I think there is a cleanup process.

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YMJ
asked in Storage and Deduplication
Data has been deleted, but it remains in the media.

After right-clicking on the backup set, checking the data, and proceeding with deletion, no data is displayed. However, when right-clicking on the media storage and selecting "View Contents," the backup data still remains. The storage capacity also does not appear to have decreased, suggesting that the data has not actually been deleted. Are there any additional actions required?

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Vaulter
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lizfBit
asked in Storage and Deduplication
“Client Direct to Device” problem with PowerProtectDD integration

After configuring Data Domain Boost Access library，there is still ethernet traffic through MA when backup. So what can I do to achieve this feature (The Commvault Data Domain Boost Access library type also offers “client direct to device” accelerated backups and restores. Clients can backup and restore directly to and from the Dell EMC® Data Domain® without having to send the data through a remote MediaAgent eliminating additional network transmission). CV:11.32 DDVE:7.9

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Vaulter
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Glenn NgobeniBit
asked in Storage and Deduplication
The job has failed because the VSS snapshot could not be created.

Good day, Please Advise. Error Code: [7:314] The job has failed because the VSS snapshot could not be created. I have checked vssadmin list writers: No errors found. State: [1] Stable Last error: No error DDB Backup Disk free space is 260 GB Process Manager service: VSS Provider Service is running. Warm regards Glenn Ngobeni

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radi
asked in Storage and Deduplication
Error occurred in disk media

Hi all, Can anyone help or have you had this problem? Error occurred in disk media, path... \CV_MAGNETIC\V [[Cloud] HTTP error conflict.]. For more help, please call you vendor' support hotline

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elizabetaByte
asked in Storage and Deduplication
Moving tape from Assigned Media in Tape library

Hello, I have Commvault backup server on simpana version 11.28.68. Also I have Tape library HPE MSL3040 with two Drives..The backup is placed on the tape library. I have a problem two days ago with one tape which was stuck in one drive. I read instruction for Tape library where I immediately had to remove the tape from the Tape library that caused the problem. That tape was in Assigned media. I didn't declare it full, nor did I move it to another scrath pool, I just took it out.Now I have situation that in Assigned media there is display as if the tape exists. but there is label “Not available”. Now, I declared tape bed but still exists in Assigned Media. How can I completely remove the tape from Assigned media? Thank you! Best regards,Elizabeta

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Jacob.AcunaBit
asked in Storage and Deduplication
What is the best way to move local disk to cloud? retiring local disk storage

What is the best way to move local disk backups to cloud? We are not going to be using the local disk and need to take it out.

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dude
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TakkyAdminBit
asked in Storage and Deduplication
Replacing old media agent: Move Mount path, or create new storage copy

Hello; We are getting a new media agent, along with a new storage library, and I want to replace the old media agent and storage library. Once I have the new stuff setup I am debating how to replace the old media agent Under every storage policy and plan, create a new copy that writes to the library. Copy all jobs to that new copy, then retire the old media agent Move the DDB and move the old library mount paths to the new storage library. (https://documentation.commvault.com/2023e/expert/moving_mount_path_to_new_location.html) Just wondering if anyone else has replaced the media agent. Which method did you go with?

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Vaulter
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Luc BussieresBit
asked in Storage and Deduplication
Using netapp cifs for disk library path

Hello, We have a spare netapp that we want to use as a commvault destination for backup. We have try to use only the netapp deduplication/compression writing directly to the library but the result is only 1% saving, the backup are not encrypted so I was expecting something better. Anyone else has some experience trying to use it. Does commvault store the backup in disk library in a block format that is not compressable even if we are not using the commvault deduplication. Thanks Luc

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