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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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Roman MelekhByte

asked in Storage and Deduplication

LukaszCommvault Certified Expert

asked in Storage and Deduplication

Delete Mount Path associated to DDB

Hello there,I’m have a minor issue, I cannot delete unused Mount Path, since it’s used by DDB. There’s a few of MPs under Disk Library dedicated to this DDB. In the DDB properites I can only remove whole Disk Lib, which is not the point. CommCell says that in order to delete this MP, I need to delete each Storage Policy Copy which is referencing to this Disk Lib. It’s not an option neither. Logs are saying something similar: EvMMConfigMgr::onMsgConfigStorageLibrary() - Error [470, Mount path is used by a Deduplication database.] occurred while deleting the mountPath[xx] ###### MLMMountPath::deleteMountPath() - :mlmmountpath.cpp:6170: Failed to delete mountpath [xx] due to error [470, Mount path is used by a Deduplication database.].###### MLMMountPath::deleteMountPath() - :mlmmountpath.cpp:5593: Failed to delete MountPath from database for Id [xx] due to error Mount path is used by a Deduplication database.:470 Do you have ideas, workaround to delete single MP in that situation?

1 year ago

Luis ConstantinoByte

asked in Storage and Deduplication

four to six DDB partitions

Situation is I have a setup with three hyperscale nodes and a cloud library. The wish is to use all three the nodes to the cloud library and make two DDB partition on each node. At the moment we were able to connect two of the nodes to the library and create two DDB partitions on the two nodes, but when I try to add two more partitions for the third node the add partitions option os greyed out. As from the documentation :”Configuring Additional Partitions for a Deduplication Database” you should be able to create a six partition DDB. This is also the case for the two existing Storage Pool Libraries on the Hyperscales. So my question is, am I doing something wrong, missing a limitation or is something wrong within the configuration which is causing this?

1 year ago

jmiamaralByte

asked in Storage and Deduplication

Prevent reuse tape command line

Hello,Is there a script that prevents a tape from being reused? Only script i found was the mark tape full, but that doesn´t assure me that the tape won’t get used once the data in it expires.I have around 12k tapes that i need to prevent reuse and doing it via GUI doens’t seem to be very workable.Any ideas? Kind regards,Amaral

1 year ago

M ScheepersCommvault Certified Expert

asked in Storage and Deduplication

Ubuntu Linux Media Agent Ransomware

HI All,currently only on RHEL / CentOS ransomware protection can be used. https://documentation.commvault.com/11.23/expert/126625_system_requirements_for_ransomware_protection.htmlthe main reason for this is usage of the SELINUX modules. Are there also plan for creating this feature on Ubuntu Linux?or are the other ways to achieve this?

4 months ago

Lubos Dvorak

asked in Storage and Deduplication

Microsoft OneDrive Cloud Storage

Hi All,I have an issue when adding a OneDrive cloud storage.I am configuring via CommCell Console. If I enter Application ID, Tenant ID and Shared Secret and then click the Detect button I receive an error “ ### EvMMConfigMgr::onMsgCloudOperation() - Failed to check cloud server status, error = [[Cloud] The requested URI does not represent any resource on the server. Message: Invalid hostname for this tenancy ”Commvault support answer is “The cloud vendor should be able to help you with the right URL. This is outside Commvault unfortunately ”.Does anybody have any experience using Microsoft OneDrive as a cloud storage?Thank you,Lubos

2 years ago

JM-Byte

asked in Storage and Deduplication

Dedupe & gzip compression. Does the --rsyncable option help?

Anybody used gzip with --rsyncable to increase dedupe efficiency and does it actually help? People still like to do app/database dump and pickups its all good until they compress the dumps and you convert the pickup backup from tape to disk dedupe. Since dedupe doesn’t like compressed files as a source there’s rumors that --rsyncable option will help here.This option uses a totally different compression algorithm that's rsync friendly and only increases the compressed size by about 1% when compared to the regular flavoured gzip file.

1 year ago

Egor SkepkoByte

asked in Storage and Deduplication

DDB Full

One of our DDB getting full, what is the best practis to make some space on DDB?

2 years ago

Commvault Engineer

asked in Storage and Deduplication

Disable deduplication on CommServe client

Hi Guys, Is there any way to disable dedup only on one single client only ?In our case, we have a Storage Pool which has Dedup Enabled, the storage pool is used to store aux copies received from our main site. The main thing is that from all the aux copies that are sent to the storage pool, there is the one of the CommServe DR backup. As per our knowledge, in case of a DR scenario, we have to use “Media Explorer” utility on the MA in order to retrieve the CommServe DR backups from the MOUNT PATH, and from the documentation, the tool is not usable when the data is deduplicated, as per below :From this came the need to disable the dedup only on the CommServe client or from the CommServe DR storage policy, and if there is any way to disable it for the CommServe only, is it really sufficient ? Since the storage pool is using deduplication, or does the CommServe DR Storage Policy has to be assigned to a specific Storage Pool that does not use Dedup ? Any advices regarding this would be grea

10 months ago

Fernando SouzaByte

asked in Storage and Deduplication

Additional Partitions for a Deduplication Database

HelloScenary: 2 MA´s in a CommCell.The Customer has bought 1 more MA and he wants to add the SSD disk space to the existing DDB. I was reading the manual(Commvault site) and have a question, the site says “before you start”.Where can i get this “Authenticate Code”?https://documentation.commvault.com/m/commvault/v11_sp5/article?p=features/deduplication/t_configuring_additional_partitions.htm

1 year ago

Fernando SouzaByte

asked in Storage and Deduplication

Add Library Fujitsu LT20 to commserv

@Mike Struening Hello Guys,for add a new physical(first) library to a CommCell, what´s the best procedure and sequence to add?The customer need to send the historical data to a physical library(Fujitsu LT20) and generate new Full Backup, and need to send 3 times (backups full) before erase data.

1 year ago

Robert HorowskiCommvault Certified Expert

asked in Storage and Deduplication

How many DDB partitions are supported on single MA?

I’m a little confused about multiple partitions and or DDBs limitation. There are several places when limits are mentioned like the one and only Hardware Specifications for Deduplication Mode1) https://documentation.commvault.com/11.24/expert/111985_hardware_specifications_for_deduplication_mode.htmlwhich mentions “2 DDB Disks” per MA andConfiguring Additional Partitions for a Deduplication Database2) https://documentation.commvault.com/11.24/expert/12455_configuring_additional_partitions_for_deduplication_database.htmlwhich mentions “30 DDB partitions” per MA.Also, In my recent discussion with PS member I was told that a partition should be treated as DDB itself.All of this creates a lot of confusion likea) is “DDB Disk” the same as DDB?b) is “DDB partition” the same as DDB?If you look at 1) /Scaling and Resiliency there is a informationThe back-end size of the data. For example: Each 2 TiB DDB disk holds up to 250 TiB for disk and 500 TiB for cloud extra large MediaAgent. That means

1 year ago

DaysAndCycles

asked in Storage and Deduplication

Secondary Copy on Disk - Implications of WORM setting

Commvault 11.18 (soon to be 11.20). - We are on the cusp of eliminating our secondary backups to tape. The benefit of a secondary copy on tape was the build-in air-gapping (and ability to move it offsite for safe-keeping). We plan to move to creating our secondary copies on disk in a different city. Commvault’s built-in Ransomware protection is no-brainer, but WHAT ABOUT WORM? What are the implications of the WORM storage on space consumption? Is there any scenario in which a WORM-enabled deduplicated secondary copy that is a true copy of the deduplicated primary copy (and with the same retention) would be any LARGER than the primary copy? Presumably, if a 1000 jobs share one block on the secondary storage, that block will not be removed until the last of those 1000 jobs ages out.Any info is appreciated. Thanks!

9 months ago

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