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Storage and Deduplication

Discuss any topic related to storage or deduplication best practices

  • 1,121 Topics
  • 4,818 Replies
1121 Topics
Mohit Chordia
Byte
Mohit ChordiaByte
asked in Storage and Deduplication
Multiple DDB Partitions or Single DDB Partition

Hi Team,I have a query . If a storage library has 8 mount paths , all configured from different media agents and shared with each other . Should we create DDB partition on all 8 media agents or only on 1 media agent ?What will help to increase performance of backup jobs  , DDB is hosted only on 1 media agent or distributed across multiple media agents ? I am thinking that if DDB is hosted only on 1 MA backup job has to look only on 1 MA everytime for duplicate blocks and signatures , if the DDB is distributed wouldn't it make the backup job slower as the backup job will check for duplicate blocks and signatures across multiple configured DDB partitions .Let me know if my understanding is incorrect ?

14184
P
Vaulter
neuwiesener
Byte
neuwiesenerByte
asked in Storage and Deduplication
Stream allocation for Auxcopy

Could someone explain a flow of process for allocating readers for an auxcopy job?What does stream allocation take place in CVJobReplicatorODS exactly? I see that the number of readers is a function of num of CPU and RAM. By default, each CPU in a proxy can support 10 streams, and each stream requires 100 MB of memory. For e.g for VSA.E.g. My VSA backups were backed up with x number of readers and y number of writers to HPE StoreOnce Catalyst.How does the replication agent (auxcopy) decide and allocate readers for copying a list of N jobs to tape. Imagine there is a primary copy → Storeonce Catalystsecondary copy → tape (combine streams to 2 tape drives with multiplexing factor of 25). Number of readers varies from 12 to 38 in my environment. It appears that the number of readers used for the subclients plays a role in the number of readers that will be assigned in the auxcopy. My goal is to increase the readers for the auxcopy jobs for improving the performance. My auxcopy with 38 rea

25076
Emils
Vaulter
M
Byte
ManikandnByte
asked in Storage and Deduplication
Deduplication requirement for Long term retention copy in Cloud

Hi All,I came across the CommVault documentation, mentioning that deduplication won’t make much impact when I am keep my long retention copy in cloud as tape replacement.Can anyone share more details about the your own experience or CommVault documentation regarding pros/cons of keep the long term copy in cloud with/without dedup. Thanks,Mani

4251
Damian Andre
Vaulter
W
Vaulter
Winston WVaulter
asked in Storage and Deduplication
Failing DDB Backup on a Linux-based MA due to extent exhaustion

Hi Team, My DDB Backup operations are failing with the following error message: Snap creation failed on volumes holding DDB paths. A quick review of the job logs points to insufficient space (0 extents). What could this mean?  RegardsWinston

29833
M
Byte
H
Bit
hiLanceBit
asked in Storage and Deduplication
Secondary Copy To Tape - Content Indexing

Hello,I am hoping someone can direct me in the right direction.I have a secondary copy to tape with an infinite retention period. The tapes will be stored offsite for safe keeping, currently tapes are onsite. I noticed during restores of older data I would need to insert the tape media containing the index to browse content to restore.Is there a way/method to keep this index on a local storage so the tape is not needed to browse the contents?

5512
J
Vaulter
M
Byte
ManikandnByte
asked in Storage and Deduplication
Regarding Dedup path for cloud Storage pool creation

Hi Team, I have a HyperScale with 6 node cluster in on-prem for primary copy. For Secondary copy I need to move the data to Cloud (Archive Storage).My doubt is, when I am creating the Cloud Storage Pool, Do I select the existing (On-Prem) de-dup path (/ws/ddb/P_1/Copy/_21/Files/31) ( or) Do I need to create a dedicated the dedup path in the on-prem MAIf I need to option 2, then what is the recommended dedup partition value and reason behind that?  And also share the your best practice for hybrid data protection, if any.  Thanks,Manikandan

4626
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Byte
T
Byte
tsmtmillerByte
asked in Storage and Deduplication
Perm to Tape

How can I just make backups to tape Perm, once a month? Can I set retention to 0 days?

52410
T
Byte
Matthew M. Magbee
Byte
Matthew M. MagbeeSocial Yottabyte
posted in Storage and Deduplication
Using server 2008r2 as a media agent after FR22 .3 update

This is a conversation post after my initial post about FR22 .3 This is more of a findings topic/conversation .I had three older wk8r2 media agents ( now replaced) that experienced widespread issues after going to FR22 .3NOTE: none of these issues are/were recorded with Commvault as actual issues. The decision to replace/Migrate the OS was made at the 11th hour after working weeks on these issues.The basic application appears to work just fine with 2k8r2 fr22 .3 - Readiness, services running  ,can run jobs etc. The issue we were running into was consistent across all three. And the only 2k8r2 media agents in our environment's I knew it was an issue. Seemed too coincidental not to be.After the Fr22 .3 update- within 4 hours our jobs started experiencing all or some of the following  errors:Pipeline errorsMedia mount services device not readylibrary full.Even when attempting to select new snap mount hosts for jobs i was getting connection refused messages in the GXTail event logs.The mos

1594
Matthew M. Magbee
Byte
D
Byte
drPhilByte
asked in Storage and Deduplication
Cloud storage https connection

Hi there, I have successfully added the cloud storage (S3 compatible). However, for the time being I am only able to set up connection based on http protocol. When I want to add a new cloud storage library using https there is the error message failed to do verification.To move further, I would like to utilize https protocol. I have self signed certificate from my netapp cloud storage S3 compatible - is it possible to allow using it since I dont have CA issued cert? Could Commvault be forced to use a self signed certificate? What I did try was to “Use this additional setting and set its value to 0 to skip the checking of the server's certificate claimed identity for the cloud libraries”, but it didnt help. Is it possible to check using of this settings? Do you have any suggestions for such situation? Thanks for you ideas.   

18761
Damian Andre
Vaulter
J
Bit
Jay SonBit
asked in Storage and Deduplication
Aux copy error: may not be copied as we failed to get array controller Media Agent, make sure to set an array controller Media Agent for source Array, will be retried soon

In our CIFN environment, we would like to take snapvaults from our primary (snap copy), under our storage policy. WE are currently using Open Replication (not OCUM). Our initial (copy) snapshot works fine but aux copy (snapvaults) are not. Here is the message under the Progress tab when job initiates. Error: Data to Storage Policy [storage-xxx] Copy [snap_vault] may not be copied as we failed to get array controller Media Agent, make sure to set an array controller Media Agent for source Array, will be retried soon. Any ideas?

8152
dude
Byte
W
Vaulter
Winston WVaulter
asked in Storage and Deduplication
Failing DDB Backup on a Linux-based MA due to thin pool/volume threshold

Hi Team, My DDB Backup operations are failing with the following error message: Snap creation failed on volumes holding DDB paths. A quick review of the job logs points to some sort of free space threshold being reached. What could this mean? RegardsWinston 

18093
Matthew M. Magbee
Byte
W
Vaulter
Winston WVaulter
asked in Storage and Deduplication
Failing DDB Backup on a Windows-based MA due to shadow copy space allocation exhaustion

Hi Team, My DDB Backup operations are failing with the following error message: The snapshot of the Dedupe database from the previous attempt of this job is not available and a new one could not be created, as the job cannot continue under this condition, it will fail I can't really find anything in the Commvault logs outside of a few VSS-related errors. What could this mean? RegardsWinston 

31472
W
Vaulter
J
Vaulter
JordanVaulter
asked in Storage and Deduplication
How do I move the location of my Deduplication Database?

I’ve been encountering some hardware issue’s on my DDB disk and was wondering if there is a guide on how to move the location of the DDB?

33413
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Commvault Certified Expert
Alireza B
Vaulter
Alireza BVaulter
asked in Storage and Deduplication
Backup Copy fails with error code 80:125

Just wondering why my Backup Copy fails with 80:125 Snap Job [...], Storage Policy [...] is skipped for backup copy as the backup level of job is non-full but the full job of the cycle is not yet copied to backup copy destination.

8021
V
Vaulter
J
Vaulter
JordanVaulter
asked in Storage and Deduplication
Why is my aux copy using so many tapes?

I noticed I am low on spare media and immediately saw that my Aux copy is using way more tapes than I expected.  How do I find out why this is happening? 

5231
D
Vaulter
J
Vaulter
JordanVaulter
asked in Storage and Deduplication
Where did the tapes go when I deconfigured my Tape Library?

One of my colleagues deconfigured a Tape Library and now we can’t find the associated tapes.  Where did they go?  We need to get the barcode numbers and potentially move them to the new library. 

3521
D
Vaulter
W
Vaulter
Winston WVaulter
published in Storage and Deduplication
Changing iRMC (HyperScale Appliance HS1300 & HS3300) Password using IPMITool

The following procedure allows you to safely update Fujitsu Appliance iRMC Password which won't impact operations such as: RHEV-M Hardware failure alerting Important Note - for the HyperScale Appliance\, Commvault leverages the IPMI protocol to monitor the physical hardware by design\, and reports back to Command Center if there is a fault. IPMI - Intelligent Platform Management Interface is a set of computer interface specifications for an autonomous computer subsystem that provides management and monitoring capabilities independently of the host system's CPU, firmware and operating system. The following procedure are applicable for the following use cases: Updating iRMC Password for security purpose Resetting iRMC Password if it is forgotten or lost IPMITool is installed at the Guest OS level (Redhat OS)Updating iRMC Password First, you will need to establish a SSH session onto the Guest OS (HyperScale RedHat 7.#) Then input the following command: # ipmitool user set password

13370
W
Vaulter
D
Vaulter
Daniel BrouwerVaulter
asked in Storage and Deduplication
Where can I find instructions about how to replace a Hyperscale metadisk?

I have a failed Hyperscale metadisk that needs to be replaced. How would I replace the disk?

7781
Emils
Vaulter
S
Vaulter
SamwiseVaulter
asked in Storage and Deduplication
I want to reclaim disk space using the DDB space reclamation feature, but how can I see how much space can be reclaimed?

I am running low space.  I want to run disk reclamation. If I run this, how much space can I be saving?

69521
Emils
Vaulter
B
Vaulter
Ben CVaulter
asked in Storage and Deduplication
How do I erase spare media?

How do I delete multiple spare tape media for reuse?

10961
Emils
Vaulter
R
Vaulter
Ron PottsVaulter
asked in Storage and Deduplication
How do I replace a disk following a Brick failure?

Hello!I had a failure on my hyperscale and needed to replace a disk. 

7331
A
Vaulter
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