Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [tape]

Tapes are used by a tape backup machine.

1
vote
3answers
67 views

Is it worth using WORM Media for archiving? (Not needed for legal purposes)

Apart from regular backups, there is some data that I want to archive (e.g., old projects that aren't needed anymore). I wonder if there is any benefit to using WORM media instead of regular tapes (...
2
votes
1answer
49 views

Are LTO Hardware compression and encryption standardized?

I'm about to setup a backup using an LTO-4 Drive. I know that drives are meant to be compatible to any tape within the past 3 generations (so I should be able to read an LTO-4 tape using an LTO-4, 5 ...
2
votes
0answers
21 views

Activate Tape Encryption on Windows Server

We use windows to make tape (LTO 8) backups with ltfs and now I want to use the hardware encryption. My problem is I can not find a way to activate it. For Linux I found "stenc" but is there something ...
0
votes
1answer
54 views

Attaching more than one Server to a Tape Library

We are running multiple Dell PowerEdge's and want to connect them to a Dell TL1000 Tape Library. For my understanding, what we need is HBA cards for each Server to get the SAS connection. I ran into ...
2
votes
0answers
35 views

Does fast-eod make difference with LTO tape?

mt-st has an option: fast-eod: space directly to eod (and lose file number) I run the eod operation with/without this option, but is seems no significant difference. Does fast-eod make difference ...
2
votes
2answers
79 views

Do LTO tape drive move when switching partition?

As everyone already know, tape winds between BOT and EOT when reading/writing data in the same LTO partition. But what if a tape drive read data in different partitions? Will it move across wraps in ...
2
votes
2answers
229 views

LTO-4 Tape Write Source Throughput Needs

I am looking to begin a tape backup regimen and am looking to keep data flowing to the tape drive in a sufficient manner (120+MBs target sustained) but cannot figure out how to do so without a ...
0
votes
0answers
26 views

Any way to list tape faster

Following this tutorial: https://www.cyberciti.biz/hardware/unix-linux-basic-tape-management-commands/ I have 200-400 GB ultrium storage tapes. The data on these are stored sequencially, I guess ...
0
votes
1answer
287 views

find out the file system from a tape

Is there any way to found out the file system from a tape under Linux (CentOS)? I need this to figure out, that a tape have already LTFS or not. At the moment I know: mtx # for managing a tape ...
4
votes
3answers
2k views

Compression on tape set..but at 2.27TB..end of space

I have a LTO6 tape inserted tapeinfo -f /dev/st0 Product Type: Tape Drive Vendor ID: 'QUANTUM ' Product ID: 'ULTRIUM 6 ' Revision: '4142' Attached Changer API: No SerialNumber: 'HU1322VW9U' ...
2
votes
2answers
681 views

Multi-tape Backup Script

Bear with me, this is my first post on any kind of Stack Exchange type of website. I’m working on creating a backup server to store the data from my storage server onto multiple tapes in my tape ...
11
votes
2answers
528 views

Do LTO tapes have spare/unused capacity?

As I understand it, LTO tapes write data in "wraps", where the first wrap unspools the tape into the drive, and the second wrap spools it back into the cartridge. This process is repeated a number of ...
4
votes
3answers
439 views

What could cause an LTO drive to write at half its capacity?

I have an LTO4 drive that when given even new LTO4 tapes, only writes around 460GiB to the tape even though the tape's uncompressed capacity is supposed to be 800GB. I have noticed that in one ...
10
votes
0answers
207 views

Determine remaining capacity of LTO tape

How can I determine how much space is remaining on an LTO tape? If I seek to the end and check the status, I can see I am on file number 17, but what I do not know is how large each file was. $ mt -...
1
vote
1answer
485 views

tar throwing input/output error when reading from tape, but file is ok

I've written about 1.5TB of files onto a tape with tar -b 512 -clpMvf /dev/nst0 /path_to_stuff Everything worked well, no error messages. Now if I try to read it back from tape with tar -b 512 -...
11
votes
4answers
919 views

Ultrium Tape Backup Capacity

I have an Ultrium 448 tape drive, LTO-2 tapes (200/400GB) and I'm using HP Data Protector as the backup client. The system is set to format and overwrite all tapes but I never manage to get more that ~...
2
votes
1answer
1k views

Veeam Marks Data Tape as Cleaning Tape

Today I ran into the issue described on this Veeam Community Forum post. Under specific circumstances, Veeam inadvertently marks a legitimate tape as a cleaning tape, removing it entirely from view in ...
6
votes
1answer
161 views

8mm Data8 tape drive compatibility for Maxell HS-8/112 and 3M D8-112

We have a Exabyte Mammoth-2 tape drive connected to a Solaris 10 box that's currently able to restore any Exabyte media no problem, but we have two other brands of 8mm tape that are shown as "illegal ...
2
votes
1answer
264 views

Loading specific tape volumes using mtx

I am trying to extract data from a set of tapes. Currently, there are five of them in the tape-magazine. I have tried using the mtx command without much success. Heres the output of mtx -f /dev/...
2
votes
1answer
242 views

Link between tape drive library index and its serial number on linux

I need to map system devices to their index in tape library on linux. How could I know by what index number in mtx command refers to a particular drive? I can get mapping between drive serial numbers ...
3
votes
0answers
59 views

Pre-labelled LTO-6/LTFS tape numbers- Are the tape numbers stored somewhere on the tape?

I have some Fujifilm LTO-6 tapes which come labelled with tape numbers. I'm writing a script and I would like to assign a variable from the tape number. Is this information stored anywhere on the tape?...
1
vote
1answer
62 views

Restore data from tapes made on old irix system (on linux)

Hey guys I'm looking for some help. I'm trying to get the data off of some old SDLT tapes probably 11+ years old. I don't know anything about them besides they were made on an irix system and I do not ...
3
votes
1answer
244 views

Tape Library backup terminology

We are looking for Tape Backup solutions but bit confused the difference between LTO Tape Drive and LTO Cartridges . We want to backup data (1 PB) from Linux servers for long term secure environment. ...
4
votes
2answers
329 views

Anyone using VTL for backups?

I would like to know if VTL is really a valid option nowadays? Is anyone here using it and why actually? Does it have any benefits compared to a regular server stuffed with SATA drives in RAID6/10? ...
0
votes
0answers
213 views

System Center 2012 R2 DPM loading tapes from library out of order

I have a System Center 2012 R2 Data Protection Manager (DPM) configured and working properly. The server has a SAS Tape Library with 24 tapes, and the DPM shows all tapes. But when a backup to tape ...
0
votes
1answer
303 views

Quantum Scalar i80 - I see the tape drive, but not changer

I have a Quantum Scalar i80 connected via SAS to a CentOS 6 server. When I look in /proc/scsi/scsi, I see the tape drive, but I don't see the changer. From /proc/scsi/scsi: Host: scsi8 Channel: 00 ...
3
votes
1answer
139 views

Tape drive unusable on 14.04 ESXi VM

The problem I've got an Overland ArcVault connected to my system (actually a virtual machine, with the standalone SCSI card it's connected to in passthrough mode), but it seems like the named tape ...
1
vote
0answers
22 views

Where to find infos about functions and opportunities for backup / archive systems

we are thinking about building an archive system (>1PB) to store video-files. Probably this complex system will be assemble by different technologies and sub-systems. But one decisively point will be ...
0
votes
1answer
617 views

What format does commvault restore to for SQL server backups?

I have a pretty challenging task that I need to figure out. I have 6TB of data in New Hampshire that I need to move to Texas. It is all SQL Server data. The data is backed up to tape via Commvault as ...
1
vote
0answers
127 views

HP MSL2024 not auto changing tapes using Ultrabac 9.2.2

I am using Ultrabac 9.2.2 to run backup sets to a one drive HP MSL2024 tape library. It's currently connected via SAS 3Gbs to a HP Proliant DL380G6 running Server 2008 R2. I have the drivers from HP ...
-1
votes
1answer
664 views

How to mount host's VMFS datastore from a guest?

I'm trying to backup VMs using a CentOS 6.5 VM and a tape library, the tape library is connected via SAS pass-through and it mounts on CentOS. The backup will be done copying the entire VM folder on ...
1
vote
0answers
175 views

HP P212 RAID + Tape Library = Kernel Panic

I have a HP DL320e g8 v2 server running CentOS 7.1 (kernel 3.10.0-229.4.2.el7.x86_64). The onboard B120i SmartArray was disabled, and a PCI-Express P212 SAS HBA was installed with two identical 3TB ...
3
votes
2answers
3k views

Bacula: best practise for labeling and initial start

I'm currently starting with bacula for backup and have a few questions for best practices. Current situation: I want to back up a slow changing max. 12TB (currently 8TB) dataset to a external LTO4 ...
19
votes
4answers
7k views

Determining LTO Cleaning Tape Expiration?

I have some LTO tape drives, and use cleaning tapes as required, but the lifetime of the cleaning tapes is not as predictable as I would have expected. I'm looking for a way to query the system, ...
3
votes
1answer
375 views

How to recover Symantec Backup Exec backup via Linux?

I have a tape backup from a defunct server that was created via Symantec Backup Exec version 10.1.5629 on Windows. Is it possible to extract the backup from this using some standard or open source ...
0
votes
2answers
67 views

Is there a way to backup logs to tape without mounting a NAS?

The traditional way to send logs to tape backup as I understand it is to mount a NAS which has the ability to do tape backups (or maybe send to a syslog server which in turn mounts a NAS). Is there a ...
0
votes
2answers
2k views

How to troubleshoot tape backup issues via mt on Linux for Windows backups?

I have an HP Ultrium 448 tape backup that is being recognized without seeming issue on Ubuntu. I am able to see it at /dev/st0. When I issue mt -f /dev/st0 offline, the tape ejects. When I issue mt ...
2
votes
1answer
294 views

How to recover data from a Windows 2003 Server HP StorageWorks Ultrium 448 Backup via Linux?

I have a scenario where I have to recover a backup from an Ultirum 448 tape medium that was made on Windows 2003 server. The only system that I have available for recovery is a Linux server with ...
2
votes
0answers
189 views

Loose threader in LTO-5 SAS internal drive [closed]

Once more I have a tape drive issue. I started seeing lots and lots of hardware errors with our LTO-5 SAS drive within our Superloader 3 changer. The main upshot was that the drive would think a ...
1
vote
3answers
212 views

Erase old dump tape in Tru64 UNIX

We backup our OLD Tru64 UNIX system (Digital UNIX 4.0F) to DDS3 tapes using the dump command. We want to recycle those tapes to make future backups on when they get too old. I've found the mt erase ...
0
votes
2answers
721 views

daisy chain SAS tape drives?

I need to add a second SAS Tape drive to my server. I have a second PCI-E SAS card, however I don't have any free PCI slots in the server. Is there any way to daisy chain external SAS devices together ...
3
votes
2answers
684 views

Restore Legacy Tapes with Veeam

We were previously using VRanger to back up our VMs and then using HP data protector to copy the backups to tape. We have subsequently moved to Veeam, and have decommissioned both VRanger and Data ...
1
vote
4answers
761 views

Quantum LTO-4 Drive fails with new tapes and need to be cleaned too often

I have a Quantum LTO-4 HH Original Drive, and recently i'm getting a lot of problems with tapes. For a long time every 3-5 tapes, the drive asks me for a cleaning tape, but lately the drive needs to ...
1
vote
1answer
228 views

Read performance of old LTO-2 tape

I have a stack of old LTO-2 tapes, and my task is to save the contents as large binary files on disk for eventual consolidation on newer media. (The contents are in a custom format specific to this ...
2
votes
1answer
786 views

Rsync and off-lined data on tape

I have a backup system handling large amounts of data. I use rsync to backup the data to a remote directory. In the remote location they archive their data on tape for security reasons. The data is ...
2
votes
1answer
615 views

Hardware compression on tape drives: does it still make sense?

Does hardware compression still make sense on tape drives, considering the performance of modern CPUs? Also, what should I do if I have some data which is already compressed in GZIP and my drive is ...
2
votes
1answer
94 views

Using different tape drives with different servers

I am using HP MSL 2024 LTO 6 Fiber and backup exec 2012. My tape library has two magazines with one tape drive. I want to have two separate backup exec software but currently using only one drive. If ...
1
vote
1answer
521 views

Backup exec LTO tape capacity shows as 17.8GB

I have come across administering a Backup Exec 10d system, and all its tapes show a Total Capacity of 17,8 GB while showing a Used Capacity of e.g. 281GB. The tapes are LTO2 so they should have 200GB ...
0
votes
0answers
1k views

Unexpected EOF write error

We have a Sun Solaris 10 server that is failing to backup using tar to write to tape. tar cEf /dev/rmt/0cn . The complete error is tar: write error: unexpected EOF tar error code 2 The directory ...
0
votes
1answer
775 views

dd unable to write to tape drive

I'm trying to dump our online backups to tape; for obvious reasons I want to encrypt the data on the tapes, so to write to the tape I need to tar everything up, pipe that to openssl to encrypt it, ...