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Questions tagged [tape]

Tapes are used by a tape backup machine.

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Possible to use two tape drives alternately with tar?

I have a two drive, 24 slot LTO library. I am testing the use of a script on the tar command "--new-volume-script=COMMAND" that when called, contains the changer "mtx -f /dev/sg2 next&...
CncJerry's user avatar
3 votes
1 answer
118 views

Virtual Tape Libraries for Microsoft Data Protection Manager - Replacement for Crystalink Firestreamer?

What VTLs do you all use to allow DPM to store off-site? My current environment uses Microsoft DPM for all of its backups. DPM stores the backups locally just fine, but to get it to store digital ...
The ITea Guy's user avatar
5 votes
1 answer
95 views

Can SAS Tape Drive (HP StoreEver 6250) used with LSI SAS 9200-8e-HP?

I plan to buy secondhand HP StoreEver 6250 tape drive for backup purpose, but not sure what SAS Card that are compatible with that device and works on ubuntu seamlessly. One of the SAS card that I saw ...
Kokizzu's user avatar
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1 answer
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What are the IOPS and physical block size for modern magnetic tapes?

It's obvious that magnetic tape media performs IO operations as well as HDDs and SSDs, although this storage device is not designed for a random access pattern. LTO standards define maximal data ...
Vitaly Isaev's user avatar
1 vote
1 answer
66 views

mtx returns an error in Windows for an LTO library

I have been using the mtx utility (from Sourceforge) with success in both Linux and Windows environments to manage a tape library. It was last modified in 2008. Today, at a customer site, we used the ...
Chai's user avatar
  • 21
0 votes
1 answer
184 views

Bareos: Bscan doesn't recover database entries (Tapes from MySQL new server Postgres Database)

I had an ubuntu server 18.04 running with bareos and mysql database. Monthly I saved data on tapedrive and everything was working fine. Unfortunately I had a servercrash without a backup of the dump ...
matterhorner's user avatar
2 votes
1 answer
627 views

Tape capacity and backup routine in Linux

I have a HP Ultrium 5-scsi tape device on a Linux server and I'm currently using a HP LTO-5 Ultrium RW (model C7975A) tape and I have a couple of questions regarding this setup and does it work. 1 - ...
Maluco's user avatar
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4 votes
0 answers
88 views

Read LTO Tape ID Tag

LTO 6 Tapes contain a ID tag within the casing (I assume its RFID). Is it possible to read the tag via mt commands? I would like to identify the tape that is currently loaded in the tape drive. I'm ...
Jotschi's user avatar
  • 41
0 votes
1 answer
134 views

HP 1/8 G2 medium changer not detected in Oracle Linux 8

I have a HP 1x8 G2 Autoloader that connected to a SAN switch, on my VMware environment I have an Oracle Linux that should work with the tape. The problem is after connecting tape to VM, medium changer ...
Ali Kargar's user avatar
1 vote
0 answers
87 views

IBM LTO4 Backups Failing

I am new to tape backup systems and recently bought a used IBM TS3100 3573-L2U library with a ULT3580-TD4 LTO4 SAS drive as well as some fujifilm tapes. I have followed this guide/HOWTO and am using ...
Jacob Still's user avatar
3 votes
1 answer
259 views

Tar extracting from multi-volume tape whilst computing shasums

As part of our backup system, we replicate zfs datasets from a TrueNAS system to a couple of backup servers, one of which is running TrueNAS Scale and has a LTO-5 tape drive connected. We occasionally ...
Gary's user avatar
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2 votes
1 answer
89 views

Are sony lto6 tapes mp or bf?

Most lto tapes specify MP or BaFe on their labels. Sony ltx2500g tapes dont. I have two ibm lto6 decks and want to try to keep different tape brands and particle formulations on different machines ...
satantango's user avatar
2 votes
1 answer
484 views

mtx commands to open mailslot on HP MSL tape library

I want to programmatically open tape library via command-line. My HP MSL4048 have 3-tape mailslot and 4 magazines, which I can open from web interface only. Reading manuals I understood that opening ...
kab00m's user avatar
  • 518
2 votes
3 answers
4k views

Tape drive Connectivity - Fiber channel Vs SAS

We want to change our tape backup system and acquire a LTO8 tape drive. Something that I cannot find the answer easily is what are the pro&con of the connectivty by Fiber channel or SAS. For the ...
Vindic's user avatar
  • 141
5 votes
2 answers
520 views

Tape backup software for putting multiple backup sets on one tape [closed]

I'm currently trying to install a new tape backup environment (LTO 7, hardware is already set up). As LTO 7 tapes provide a LOT of data space (6/15TB per tape), and the backups that need to be stored ...
Daniel's user avatar
  • 73
2 votes
1 answer
75 views

Recycle already formatted DLT IV tapes?

I have a lot of DLT IV Tape Cartridges which were used and written to in DLT 4000 drives. Now I have a DLT VS 160 drive, which uses the same Tape Cardridges but I can't write onto them. Searching ...
PoC's user avatar
  • 236
0 votes
1 answer
225 views

AMANDA backup fails with: data read: recv error: shm_ring is cancelled

I have an AMANDA backup process running nightly. About a month ago, we pulled the config into AMANDA 1:3.5.1-build2 (ubuntu package) running on Ubuntu 18.04 (new hardware as well). In the past week ...
Server Fault's user avatar
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0 votes
1 answer
825 views

Configure single LTO tape drive over Fiber Channel HBA

How do you set up a single tape storage drive over an FC HBA? As far as I can tell, these things are not "plug and play". The tape drive I bought is an lto-5 FC taken from a tape library. I have ...
teziroct's user avatar
5 votes
1 answer
2k views

What kind of algorithm is used in LTO tape hardware compression?

LTO tape drives, from their very first generation, offer hardware compression that, theoretically, allows a maximum of 2 - 2.5x the rated data capacity of each cartridge to be stored, with only a ...
Mikey T.K.'s user avatar
  • 1,417
-2 votes
1 answer
690 views

Fibre Channel Ports and Tape Library

I am looking for advice rather then fix my issue. What should fibre channel port settings be? Currently F_ports, I have a qlogic 5800 sanbox switch connected to quantum scalar i40 lto7 library over ...
P78W's user avatar
  • 1
2 votes
3 answers
622 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 (...
Michael Stum's user avatar
  • 4,070
4 votes
2 answers
544 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 ...
Michael Stum's user avatar
  • 4,070
2 votes
1 answer
124 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 ...
niggi's user avatar
  • 21
0 votes
1 answer
692 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 ...
Moritz's user avatar
  • 3
2 votes
1 answer
397 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 ...
petertc's user avatar
  • 2,710
2 votes
2 answers
326 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 ...
petertc's user avatar
  • 2,710
3 votes
2 answers
2k 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 ...
Damon's user avatar
  • 439
1 vote
1 answer
602 views

find out the file system from a tape

Is there any way to find out the file system from a tape under Linux (CentOS)? I need this to figure out if a tape is already LTFS or not. At the moment I know: mtx # for managing a tape library mt #...
jb_alvarado's user avatar
4 votes
3 answers
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' ...
elbarna's user avatar
  • 328
3 votes
2 answers
2k 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 ...
Andrew K.'s user avatar
13 votes
2 answers
931 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 ...
Malvineous's user avatar
  • 1,145
5 votes
4 answers
2k 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 ...
Malvineous's user avatar
  • 1,145
16 votes
5 answers
5k 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 -...
Matt Clark's user avatar
1 vote
1 answer
3k 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 -...
vfxdev's user avatar
  • 111
12 votes
4 answers
1k views

How to use the full LTO-2 Tape backup capacity of 200/400GB?

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 ~...
Andrew Hoole's user avatar
2 votes
1 answer
3k 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 ...
tfrederick74656's user avatar
6 votes
1 answer
379 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 ...
grephappiness's user avatar
2 votes
1 answer
2k 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/...
feverDream's user avatar
2 votes
1 answer
520 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 ...
Pavel Voropaev's user avatar
6 votes
2 answers
408 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?...
neilH's user avatar
  • 997
1 vote
1 answer
134 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 ...
A.Martinez's user avatar
3 votes
1 answer
352 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. ...
Zeeshan's user avatar
  • 53
5 votes
2 answers
372 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? ...
Net Runner's user avatar
  • 6,249
0 votes
0 answers
314 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 ...
Elieser Topassi's user avatar
0 votes
1 answer
809 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 ...
mrwboilers's user avatar
3 votes
1 answer
234 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 ...
Mikey T.K.'s user avatar
  • 1,417
1 vote
0 answers
28 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 ...
The Bndr's user avatar
  • 294
0 votes
1 answer
2k 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 ...
Michael's user avatar
  • 39
1 vote
0 answers
137 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 ...
rtyner's user avatar
  • 13
-1 votes
1 answer
2k 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 ...
Paulostation's user avatar

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