Storage and Deduplication

We’re currently in the process of doing a major upgrade of our Commvault setup - both software version and hardware, and are looking at ways to improve things. None of us are seasoned Commvault admins - I did a course before starting a couple of years ago, only to find that much was irrelevant as the course focused on the webGUI and Plans, while the existing setup turned out to be “old style”. I’ve also had a lot of other stuff on my plate, so there has been little time to do much self study...So we’re taking this opportunity to build the setup from scratch. One of the areas we want to improve is protection against malicious or accidental deletion. The old setup does create aux copies to an offsite disk library, but as both primary and secondary libraries are permanently mounted via iSCSI it would be trivial to obliterate everything… an “interesting” fact here is that the previous incarnation of the setup used NetApp for storage, and SnapMirror to create offsite replicas - so in some w

Greetings, We have some Aux copies that go to our AWS s3 bucket. The storage policy this is under has a 30 day on prem and 365 day cloud policy. The 30 day on prem (primary) has data aging turned on and seems to be pruning and getting rid of jobs past 30 days. I took a look at the properties of the Aux copy job though and noticed that the check box for data aging was not selected. When I view all jobs for this Aux copy, it showed jobs back from years ago unfortunately. So that tells me that nothing is aging out or getting cleaned up. Our s3 bucket is getting very large and we need to clean up all of these old jobs to bring it down to a reasonable size. My question is how best to do this clean up? Can I view the jobs under the Aux copy and then just select all of them past our retention and delete? Would this delete data out of the s3 bucket also if I did this? I did select the data aging check box now and hit ok, then ran a data aging job from the commcell root and just ran it against

Hello Team, Please advise the best practice for the implementation of on-premises HPE Object storage with Commvault.There are two different sites, one site will use HPE Object storage for backup and another site will use HPE File System for backup targets (CIFS shares mount paths).Our requirement that backing of VM’s, FS & DB’s, the backup data of around 500TB.Is it single (or) multiple S3 objects will create from Object HPE storage. There are two physical media agents to use these object devices access. Shall we create single Disk library and will add mount paths S3 objects. Any best practices to configure additionally to get backup performances. The backup data will copy from Object to File System storage using Commvault Aux copies. Is it will work for these copy jobs.Thanks in advance.

Dear community,I have an issue after migration from Windows 11.36.49 to Linux 11.36.49 , the Vault Tracker reports is currently empty :No tape from the location appear in the “Due backup for reuse” report while 7 tapes get a status “Now” on the “Due back for reuse on” field from list of media : On the vault tracking report with broader criteria, I get the following message : Please, what do I have to checkBest regards,Gilles

Good morning,We are experiencing an issue with our Commvault environment related to copying data to tape, and I am hoping someone can help explain the behavior or suggest a fix.Currently, our Commvault system is configured to take weekly FULL backups of all file shares and VMs every Thursday. Once these full backups complete, they automatically copy to tape. This process itself works as expected.The problem is the volume of data being written to tape.Each week, I have to manually update the Copy Policy “From Date” to the Monday of the current week to ensure that only the most recent data is copied. If I forget to do this, the amount of data copied to tape increases significantly.For example:January 2026 Week 1: I set the copy date to Monday 5th January. On Thursday, approximately 100 TB is written to tape (usually completing by the following Wednesday). Week 2: I forget to update the date. On Thursday, it again attempts to copy around 100 TB. Week 3: I forget to update the date aga

Incremental Backup Converted to Full (7.5TB+) following Synthetic Full Completion Problem DescriptionA recurring issue has been identified where incremental backup jobs significantly increase in size (bloating from ~1.5GB to 7.5TB+) specifically after a Synthetic Full backup is performed. In the most recent instance, the backup remained in a "Running" status for over 10 days. While the job continues to progress slowly due to limited bandwidth between the Cloud source and the on-premises Media Agent, the root cause is a logic failure in the backup chain.Technical Analysis Automatic Job Conversion: Commvault automatically converts an incremental backup to a full backup if it cannot establish a valid baseline or if the previous cycle did not close correctly.Cycle Disruption: A backup cycle starts with a Full/Synthetic Full and ends before the next Full. If the Synthetic Full (DASH Full) fails to properly sync its metadata index or deduplication signatures due to network latency, the subse

The M365 admin center reports my OneDrive as having 2.8M files consuming 8.1TB of space.But when I go into Commvault I see numbers that are totally different. In Commvault I see either 1) the latest backup had 3.2M active and 0.7M Inactive for a total of 3.9M files or 2) all backups with 6.6M Active and 2.0M inactive for a total of 8.6M files.Likewise, the disk space used is reported as either 1) the latest backup with 3.4TB Active and 1.6TB Inactive for a total of 5.0TB or 2) 9.6TB Active and 4.0TB inactive for a total of 13.6TB.Is there any way to drill down into Commvault to figure out why the numbers – particularly the “latest backup” file counts – are so different from what is reported by Microsoft?

I want to configure a disk library and share it between two Media Agents running Windows Server 2022, enabling load balancing and failover. The disks are presented from a storage via FC to both servers and from these servers the same disks are accessed using the same drive or mount path.Does the Transport Type in Share Mount Path have to be Regular on both servers?Or, on the first server, is it configured as a local path and shared with the second as a Data Server - FC?What is the recommendation according to best practices? 

Hi team,I would like to confirm a specific point regarding Commvault Deduplication.Is it supported to store the Deduplication Database on a NAS , considering that the NAS itself is not a MediaAgent?I want to confirm whether the DDB can reside on NAS storage or if it must be located on MediaAgent-local storage.Thank you. 

Hey Community,A couple of days ago, I received an email with this anomaly notification “Garbage Collection Delay in DDB Stores.” What does this issue indicate, and what should I be checking when this appears?When I click the link to see the more details about this notification, it opens a DDB Pruning Performance Anomaly Report, but it doesn’t seem to provide any useful information. Has anyone run into this before or have suggestions what to do with this?Thanks in advance!

Hello Community,I have a problem, that the Index Cache Directory usage grows steadily (~ 2Gb per week) and currently 80% of free space is consumed.Due to specifics of the environment, Load Balancing and adding free space is almost impossible. As per the CV documentation, the active metadata are deleted from Index Cache, when the corresponding jobs meet retention:https://documentation.commvault.com/2023e/commcell-console/backupset_level_indexing_index_cache_cleanup.html#index-cleanupand the compaction process happens every 30 days by default:https://documentation.commvault.com/additionalsetting/compaction-enforce-days.htmlCan I use the Additional Setting COMPACTION_ENFORCE_DAYS to set another frequency for the Compaction process, e.g. 1 week? I expect, that then the metadata from aged jobs will be deleted every week, rather than every month, and this will free up space in Index Cache.Is this assumption correct?What impact can this setting have on the environment? Best regards, Aleksandr

Hi,I have few questions about compliance lock and the retention of last full backup.How does the retention of the last full backup work in a storage with a compliance lock? Is the retention for the last full backup updated when a new full backup is added at the end of the month? I know that compliance lock can't lower the retention.For example, if a full backup occurred on the 15th day of the month considered as the last full backup of month and the retention is set to 1 year, but on the 30th day of the month a new full backup occurred and it is the real last full backup of the month, does the first full backup will update the retention date even if it is in a storage with compliance lock.Is it recommended to select "Last full backup" for a extended retention job with compliance lock? Do you recommended to use instead "First full backup" with compliance lock? What is the best practice?

Hi guys!I need your help.I am trying to use AirGap Workflow to set proxy cennection between MediaAgent ‘cvmakrk01’ and CommCell Infrastructure.I have created following computer groups.  Then I have created the following Networktopology for AirGap workflow. My goal is to push Commvault to use ‘cvproxy’ client to set tje network connnection between MediaAgent ‘cvmakrk01’ and Commvault infrastructure anf the use AirGap workflow to turn on ‘cvproxy’ only for the time of AuxCopy jobs.However, I can see, than even if the ‘cvproxy’ is powered off, the Check Readiness still shows me that ‘cvmakrk01’ is ready.        MountPath Validation and AuxCopy job runs as normal.What is important, I tnink, CommServe LiveSync is configured in my environment, so I can also that ‘makrk01’ uses LiveSync network topology for communication. Probably this is the reason, why ‘cvmakrk01’ is always ready. Is any way to set the ‘cvmakrk01’ to ignore LiveSync proxy client and use only ‘cvproxy’ client to communicatio

SQL Backup getting failed with errorEncountered a network error. Could not connect to the CVD on the target MediaAgent to launch the DDB engine.  5884  1be0  12/09 16:19:52 739 <SC: 191> LaunchGroupRemotePart1: Cannot connect to CVD on host [DPCBKP02*DPCBKP02*8400]. Error [0xE8090010:{CCvNetwork::Attach_RemoteDLL(1579)} + {CCvNetwork::Attach_RemotePort(1453)} + {CCvNetwork::GetConnection(3327)} + {CSessionConnectionSocket::GetConnection(240)/EventMessage.0x09000010.9:16.(Remote machine [DPCBKP02]. The socket connect failed. Error returned [-1=Connection failed on sqlclust01: Error in tunnel to DPCBKP02: Connect failed: Failed to connect fd=1096 to 172.18.3.27:8403: Connection timed out]. Check Network Connectivity.)}]5884  1afc  12/09 16:19:52 739 <SC: 191> LaunchGroupRemotePart1: Cannot connect to CVD on host [DPCBKP02*DPCBKP02*8400]. Error [0xE8090010:{CCvNetwork::Attach_RemoteDLL(1579)} + {CCvNetwork::Attach_RemotePort(1453)} + {CCvNetwork::GetConnection(3327)} + {CSessi

Good afternoon everyone.I have a question about Commvault's cloud libraries. A client would like to use Wasabi Object Storage, but I couldn't find any specific requirements in the documentation for using Wasabi as a library. Is there any documentation on this?

Hi,Here is my situation :For a specific server plan, a synthetic full is missing for July and August. We have extended retention for this server plan on AirGap so that one full by month is kept for a year. I have Synthetic full with all VMs of the subclient for : May, June and September but I don't have Synthetic full for : July and August. The difference between these months is that we added a virtual machine in July and August. At the time of addition, there are full backups to back up only the virtual machine we just added. Here is the answer of the support :When a new VM is added to a subclient, Commvault automatically will take a full backup for that VM during the next scheduled backup. If, during July and August, the synthetic full backup for the subclient was not triggered or completed, it may be because the schedule detected that a full backup was required for the newly added VMs. As a result, the synthetic full operation was skipped for those months and instead a full backup w

Hi Team,Im wondering if anyone has any success, or otherwise using S3 standard as a Primary copy.We will be deduplicating.That would not be my preferred option, as I always prefer faster disk than a Cloud-library offering, but the question is being asked.We do have some fairly large databases (a few TB’s) and I’m wondering how the throughput of say a 5TB DB would hold up in a restore situation.It would be good to hear people’s feedback on this subject.Thanks

Hi guys need help for fix below error  Error Code: [62:441] Description: Library [XXXXX], MediaAgent [YYYYYY], Drive Pool [], MountPath[\8DC1R1_08.15.2024_16.29]: Internal software error occurred. 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. Source: YYYYYY, Process: ScalableDDBVerf 

I have 2 media agents connected to tape library with 8 drives… and they both host a Plan and I can’t seem to have the aux copies to tape to use more than one drive. Each plan has 30 Streams and the aux copies use the primary copy as the source copyEach also have an aux copy going to the other one (01 to 02 and 02 to 01) . In the media tab, I’ve combined source data streams to 2 and I did not multiplex..Should I use the second copy as the source for the tape copy then?I find this whole part a bit confusingthxG

If Compliance Lock is enabled on a Storage Policy, Does it affect anything else in the storage pool?

Hi, I am looking for a complete list of resources from each cloud provider that Commvault is able to protect.  It’s currently being used for my VMs, some DBs and AD.  

Hi,Please, could you help me with the following question:Currently our customer is using Commvault’s deduplication feature for every copy (primary, secondary).They want to start using hardware deduplication (from their backup storage appliance).Since secondary copies are written to a secondary site, we were wondering if it is possible to disable deduplication just for the primary copy (which would use HW dedup) and enable it only for the secondary one, in order to avoid high network usage between sites. Thanks in advance!

Hi.I’m interested to know if Commvault (11.40) can work with Veritas Access Appliance as Object Storage via S3? I can’t find any documentation on it, but in theory if it’s standards based S3 it ought to be compatible...Thanks.

i have a problem. i changed disks on my storage, i restored backups on new disks. my commvault i proceed that make backups on this storage library, but i receive error notifications  Job Management - Auxiliary Copy  [Media read operation failure] [Dedupe disk media] [Operating System could not find the path specified.] [in media (CV_MAGNETIC) , Path (\\192.168.170.100\AMS_Backup\Commvault\9ITOLX_09.06.2022_10.40\CV_MAGNETIC\V_10282)] Failed to generate collect file for backup contents [C:\Program Files\Commvault\ContentStore\iDataAgent\JobResults\CV_JobResults\2\0\537187\LogDBList.cvf] or the file size is zero. Possible reasons are 1. nonexistent path/file 2. disk is full or 3. incorrect permissions for the user configured at the instance level or 4. subclient contents are empty and/or Auto-Discovery not enabled.i tested from windows explorer and cmd. i have access this share location on my storage library. What i do?

i have a problem. i changed disks on my storage, i restored backups on new disks. my commvault i proceed that make backups on this storage library, but i receive error notifications Job Management - Auxiliary Copy  [Media read operation failure] [Dedupe disk media] [Operating System could not find the path specified.] [in media (CV_MAGNETIC) , Path (\\192.168.170.100\AMS_Backup\Commvault\9ITOLX_09.06.2022_10.40\CV_MAGNETIC\V_10282)] Failed to generate collect file for backup contents [C:\Program Files\Commvault\ContentStore\iDataAgent\JobResults\CV_JobResults\2\0\537187\LogDBList.cvf] or the file size is zero. Possible reasons are 1. nonexistent path/file 2. disk is full or 3. incorrect permissions for the user configured at the instance level or 4. subclient contents are empty and/or Auto-Discovery not enabled.i tested from windows explorer and cmd. i have access this share location on my storage library. What i do?