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Questions tagged [tape]

Tapes are used by a tape backup machine.

211 questions
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tape changers on Centos 6 enter flurry of activity upon boot, at udev start

I have two tape-changer robots (Quantum Superloader 3), one with parallel SCSI connectivity, the other with SAS. They were connected to a Centos 5 server, and boot would proceed normally. They are now connected to a new server running CentOS 6.3.…
ACKumen
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Ultrium 3 tape drive shoe-shining, 3Mb/s: and it's not the cable

I have a HP 960 Ultrium 3 tape drive. Since I got it, (second hand, £90) I've been experiencing shoe-shining. Writing with tar in Linux, I average about 3Mb/s write speed. I've tried replacing both the SCSI card and the cable now, both of which made…
mowsala
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Internal LTO tape drive becomes hot

We use an internal LTO3 tape drive (HP Ultrium 920) in a PC (no particular server hardware) running Linux. The tape drive becomes quite hot - I don't have the exact temperature, but you may touch it for a second or two, then it hurts ;-) This…
claasz
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Is it possible to pass through a IDE tape drive to a virtual machine?

My department does conversions for people who bought our software to get their data out of their old system and in to our system. Often they will be running odd or archaic systems that the only way to get the data to us is a tape backup. Currently…
Scott Chamberlain
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Network tape restore is faster than disk to disk copy

How can this be? Running a cp or rsync (with -W --inplace) takes two hours for 93Gb; a tape restore over the dedicated backup network is 41 minutes. Tape restore is 50 Mb/s; disk to disk was measured and calculated to be 16 Mb/s tops - 2 Mb/s if…
Mei
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Linux tape drive throughput performance statistics

Does anyone know a way, (other than using SystemTap + iostat-scsi.stp script), to get Tape Drive performance statistics? Server: Red Hat Enterprise Linux Server release 5.7 (Tikanga) Kernel 2.6.18-274.12.1.el5 on an x86_64 Attached Tape…
awojo
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Does tarring up small files into one big tar file before writing them to tape increase the level of data loss when an error occurs?

I've been looking at our backups recently and noticed that the tape throughput is a lot lower when writing lots of small files, so was thinking of tarring those small files up into one big tar file and the writing that to tape instead of the small…
David Gardner
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Acceptable level of hard write errors on tape?

What is an acceptable level of hard write errors on tape? Specifically, what is acceptable on HP LTO-2 media? Is it a hard number of errors, a ratio of hours in use to errors, or something else entirely? Further background We are using a MSL6000…
CC.
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Best Network Tape Backup tool

We have a medium sized network with both Windows and Linux servers (about 50 of each), and I'm just wondering what the best multi-OS backup solution for this situation is. Right now we are using bacula with a 23 tape autochanger, which is fabulous,…
Brent
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what are you using to store your LTO3 tapes?

I have about 50-75 LTO3 tapes stacked in my server room. Does anyone have any creative solutions on how to properly store them so they're easily accessed? All the LTO3 cabinets I see are thousands of dollars, which seems overpriced to me.
Michael
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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 not using a tape loader. Thus the barcode scanner…
Jotschi
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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 library. I am still learning Linux, so I need help /…
Andrew K.
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Why are tape compression capacities always double that of the native?

Why are tape compression capacities always double that of the native?
Crazy Chenz
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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. Note: Dell Bellow is just for example . it is…
Zeeshan
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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 device nodes (something like /dev/st0 or /dev/nst0)…
Mikey T.K.
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