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Storage and Deduplication

Discuss any topic related to storage or deduplication best practices

  • 900 Topics
  • 4,106 Replies

900 Topics

S
Bit
Sérgio BatalhaBit
asked in Storage and Deduplication

How i delete empty DDB partition ?

Hello,I have a new DDB with 2 partitions but i only want 1 partition. The ddb is empty, how can i remove one of this partitions?  

1
Mike Struening
Vaulter
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
P
Byte
PatricGByte
asked in Storage and Deduplication

List all backups currently on tape outside 'Media in Library'

Hi there,We’re running Commvault v.11.21.34Is there a way to get a list of all backups currently on tapes outside the ‘Media in Library’.Some report or other way to get this list. Best regardsPatricG.

1
Sean Crifasi
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
L
Bit
lowey71Bit
asked in Storage and Deduplication

DDB storage for DR restore only

Doing some preparation of our DR environment and wondering, if we intend to only do restores in the DR environment, is SSD still a requirement? My thoughts were the performance is required to do signature lookups (for writes), but for restores this would not be required. Thanks!

1
B
Vaulter
2 years ago
E
Byte
EldanByte
asked in Storage and Deduplication

Restore from tape of a closed site

Hi, one of my site has been closed. I took the last backup tapes from this site and put them in a tape library of current site.how can I restore (a VM in this instance) from the tapes of the old site while they are in the library of the current site?now the tapes from the old site are marked with no entrance sign

1
S
Vaulter
2 years ago
B
Byte
BloopaByte
asked in Storage and Deduplication

add a FC tape library

Hello Community ! I am trying to add a tape library HP MSL G3 Series to Commvault.I am using the Expert Storage Configuration. i have selected the Two Media agents (they are already zone with the tape libraries)I have followed the procedure. Now it asks if the library have a barcode reader and I don’t know :)can you help me please ? Thanks !

1
MichaelCapon
Vaulter
2 years ago
L
Bit
LucasBit
asked in Storage and Deduplication

AWS Glacier data removal

We copy data to AWS S3 for long term retention and let it age to glacier after 30 days. In order for this data to be restorable I first have to rehydrate it with a workflow as Commvault only expects to work with S3 storage tier. This works fine for the occasional restores. We are now looking into a larger data removal as part of a cleanup project to reduce AWS glacier storage costs. My questions: If I delete jobs from the Commcell that have aged to glacier, does Commvault have to rehydrate this data back to the S3 tier to be purged from AWS? If so, is this done with the same restoration job Cloud Recall workflow? 

1
B
Vaulter
2 years ago
K
Bit
Keyur DaveBit
asked in Storage and Deduplication

Issue with detecting SAS atached Tape Library

Hi, We have SAS attached TS4300 tape library dedicately assigned to AIX 7.2 LPAR hosted on IBM Power9 host. Installed Atape driver on AIX.We can take backup and restore it on OS level. But Commvault tools like testinq, ScanScsiTool not able to detect the device. root> lsdev -Cc tapermt0 Available 00-00-00 IBM 3580 Ultrium Tape Drive (SAS)smc0 Available 00-00-00 IBM 3573 Library Medium Changer (SAS)root> lsdev -Cc adapter | grep sassissas0 Available 00-00 PCIe3 RAID SAS Adapter Quad-port 6Gb x8 testinq gives following error:root> /opt/commvault/Base> ./detectdevices -add tapesas0 rmt0.1 5764854988047962203 0 pthru_atape tapesas0 smc0 5764854988047962206 1 pthru_atape taperoot> /opt/commvault/MediaAgent64> ./testinq /dev/sas0 5764854988047962203 0devsubtype = '7', 0x37Error: ioctl SCIOLINQU failed with error 19 (No such device)Info: version = 2, status_validity = 0x02, scsi_status = 0x00, adapter_status = 0x04, adap_set_flags = 0x00Is there any specific driver on OS lev

1
J
Vaulter
2 years ago
V
Byte
virgilByte
asked in Storage and Deduplication

error 13:138 on auxiliary copy between 2 MA

HelloI have a problem of auxiliary copy between two media agents with HP StoreOnceI have a 2*100MB WAN link between the two MA.I got 13:138 errors but job is still runningSee attachments for detailsIf someone could help meSP11.22No firewallingFirewall is Off on the two MA Regards  

1
J
Vaulter
2 years ago
H
Bit
HITSBit
asked in Storage and Deduplication

Pruning Performance

Hi!Started a pruning job (DDB → All Tasks). Checked the Logs on the MA, pruning is running.Checked the Ressource Monitor - CPU is low, Memory is low, Disk usage is low. So can i increase the pruning performance?

1
J
Vaulter
2 years ago
Z
Bit
zori92Bit
asked in Storage and Deduplication

Library inventory is in progress

Hi,When I try to export a tape, I get a library inventory is in progress error I can't find a way to solve this problem, any ideas?  

1
Mike Struening
Vaulter
2 years ago
E
Byte
EldanByte
asked in Storage and Deduplication

Import media from catalogic app

Hi, do I have an option to Import media from catalogic app? I have a customer that migrated to commvault from catalogic and he wants to know if he can import the catalogic tapes to commvault library.he has tapes with the last backup from catalogic.I think he will have to maintain his old backup system, but I’m don’t 100% sure.

1
Damian Andre
Vaulter
2 years ago
A
Byte
AlexzyByte
posted in Storage and Deduplication

Error restoring DDB Store files. Restore job(s) [] encountered one or more errors.

Error restoring DDB Store files. Restore job(s) [] encountered one or more errors.2 please help help ugent…..

1
Mike Struening
Vaulter
2 years ago
A
Byte
AmitByte
asked in Storage and Deduplication

how to RELABEL SCRATCH tapes in VTL

Hello All,I am from TSM background and when VTL was introduced in TSM, the scratch tapes were not automatically deleted in VTL. Later, RELABELSCRATCH parameter was introduced and it allows to automatically relabel volumes when they are returned to scratch. I remember that specific settings we have do in Backup Exec and HP data Protector  backup software too.→ I want to know whether any similar setting is there in Commvault?More details as per TSM perspective → Virtual Tape Libraries (VTLs) maintain volume space allocation after Tivoli Storage Manager has deleted a volume and returned it to a scratch state. The VTL has no knowledge that the volume was deleted and it keeps the full size of the volume allocate. This can be extremely large depending on the devices being emulated. As a result of multiple volumes that return to scratch, the VTL can maintain their allocation size and run out of storage space. Relabel processing on the Tivoli Storage Manager server are started for libraries (V

1
Mike Struening
Vaulter
2 years ago
E
Byte
ElmerTByte
asked in Storage and Deduplication

Media stuck in drive

Hi,After a power failure the tape library is showing offline with the error initializing device failed. I restarted the Commvault server and the error went away however the drive is showing a media but in actuality it is empty. I can’t mount a tape since Commvault thinks there’s still a tape inside the drive. How to resolve this issue? 

1
Mike Struening
Vaulter
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
Byte
drPhilByte
asked in Storage and Deduplication

DDB database reconstruction and deletion

Hi there, I want to share my experience with DDB reconstruction. My colleagues started the DDB database reconstruction because the DDB database was not in good condition. There were no current backups of DDB database (the last backup was 14 days old) and maybe some other error messages were active. They decided to start full reconstruction, maybe there was no option to make manual backup of the DDB database - hm, but the database had not been updated with new records anyway. The thing is that the reconstruction is very time consuming and moreover, since the DDB database is not running the backup jobs are not possible. The workaround we did was to temporarily disable deduplication. Another caveat is that we are running out of disk space. And that is how a disaster looks like . At the end I wil put my hypothetic questions. Is the DDB database needed for restoring of data - I wouldnt say so. And what would happen if the broken DDB database was deleted and completely the new one was built

1
Mike Struening
Vaulter
2 years ago
Henke
Byte
HenkeByte
asked in Storage and Deduplication

Using imutable storage data volume increase

Hello,I’m trying to do some math over effects of changing 2:nd copy to be stored on immutable volumes in azure.I have retention of 365 days, currently no seal of db database but seems recommendation is 180 days. According to the formula in another post, that would give me that I should have 545 days as immutable days on the storage volume.Our baseline is 18TB.Since there is 18TB as baseline and there will be 3 seals of the DDB, does that mean that I will add 3 times 18TB to the volume since no data pruning will happen for 545 days?//Henke

1
Mike Struening
Vaulter
2 years ago
neuwiesener
Byte
neuwiesenerByte
asked in Storage and Deduplication

Disk Volume Size Watermark

Came across this setting and was wondering when this should be used? What is a possible usecase to tweak this setting?  Configure Disk Volume SizeDisk volumes are created based on the volume size. When the size of the volume reaches the maximum size, then a new volume is created. The maximum size of a disk volume is set to 25 GB by default, and this value can be modified. On the ribbon in the CommCell Console, click the Storage tab, and then click Media Management. Click the Resource Manager Configuration tab. Modify the Disk volume physical size high watermark in GB parameter as required. From the Disk volume physical size high watermark in GB box, enter the disk volume size. Click OK. https://documentation.commvault.com/11.24/expert/9319_disk_libraries_advanced.html#b9365_use_unbuffered_io

1
Mike Struening
Vaulter
2 years ago
M
Byte
ManikandnByte
asked in Storage and Deduplication

Deduplication scalling

Hi,We are in CV deployement and Initially we build a single MA with 4 partitioned DDB in the Azure cloud. When data is growing, we moved the two partition into new Media Agent and its running in two MA with two DDB disk each.Now, both MA reached its bottleneck planning to scalling up further, but management allowed me to add one MA alone.So, I have one possiblity of running the backup with four-partitioned DDB splited with three MAs as shown below.MA 1 - Single DDB Disk MA 2 - Single  DDB Disk MA3 - Two DDB DiskI am bit worry about to do that, as I am thinking it make some instablity between MAs. But, I couldn’t find relevent CV documents.  Can you suggest whether the above design make any sense or not? and will it make any issue in the future? Thanks,Mani

1
Damian Andre
Vaulter
2 years ago
A
Byte
AlexzyByte
asked in Storage and Deduplication

HQ-VM-CommServ 32:162 Replacing the active media for job [4157411] from Mount Path [[dr_media_svr2] V:\DRMA02AR_LUN06] to [[dr_media_svr2] U:\DRMA02AR_LUN05].

HQ-VM-CommServ - 32:162 - Replacing the active media for job [4157411] from Mount Path [[dr svr2] V:\DRMA02AR_LUN06] to [[dr svr2] U:\DRMA02AR_LUN05]. What does this mean? AND MAKING THE JOB TO RUN VERY SLOW WITH LOW Current Throughput: OF 0.3:

1
L
Byte
2 years ago
N
Bit
nerdgirlBit
asked in Storage and Deduplication

determine cause of DDB reconstruction

After updating one of my Media Agents to service pack 22.27 this morning, Commvault decides it needed to reconstruct the DDB on that MA.  How can I tell what instigated/initiated the rebuild?

1
Mike Struening
Vaulter
2 years ago
D
Byte
drPhilByte
asked in Storage and Deduplication

Temporarily disabled deduplication - make it enabled again

Hi all,some days ago we have temporarily disabled deduplication only under storage policy copy (Storage policy tab). Now, we want to allow deduplication again, however if we uncheck the option (temporarily disable deduplication) we see the message - Deduplication cannot be enabled on dependent copy when disabled on Storage Pool. And this is very strange. Under Storage Pool there have been no changes made, moreover, there is no option to uncheck temporarily disable deduplication (Storage Pool tab). Maybe, only one thing can be in play, the DDB is in Maintenance state because of verification in progress.  Storage Pool window - no option to switch disabled deduplication   

1
D
Byte
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

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