Discussions specific to tape backups
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kubimike
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tape max speed

Post by kubimike » Jun 15, 2017 6:59 pm

does veeam in any way limit the speed as to which it can read/write to tape? Looking to move on to LTO7 and its seems pretty quick. I am at LTO5 with an HP MSL2024 writing at roughly 70MB/s. Want a tape drive that can hit 150MB/s :wink: :shock:

veremin
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Re: tape max speed

Post by veremin » Jun 16, 2017 11:49 am

The speed of file to tape or backup to tape job is mostly defined by read speed provided by backup repository, speed of repo-to-tape device connection, write speed provided by tape device. We don't put any cap on the later, but keep in mind all three variables (not just a single one) while thinking about performance improvement. Thanks.

kubimike
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Re: tape max speed

Post by kubimike » Jun 16, 2017 1:06 pm

Sure, as it reads from the repo it has to re-hyrdate anything if you're using cloning .. I thought of that after I posted this however. Im going to use the HP L&TT tool to do a speed test on my tape drive w/o compression to see how it fairs.

larry
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Re: tape max speed

Post by larry » Jun 16, 2017 3:38 pm

LTO 7 drive with LTO 7 7 tape, local disk as source backup speed 303 MBS
LTO 7 drive with LTO6 tape Local disk as source backup - speed 153MBS

LTO 4 driveLTO4 tape local or remote server 53MBS

My tests

kubimike
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Re: tape max speed

Post by kubimike » Jun 16, 2017 7:53 pm

This is with veeam or a testing tool ? Thanks!

larry
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Re: tape max speed

Post by larry » Jun 19, 2017 1:08 pm

Using Veeam with real data.

kubimike
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Re: tape max speed

Post by kubimike » Jun 19, 2017 2:36 pm

awesome, going to order a new HP LTO7 setup.

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