How Long Does It Take to Make Tape Recovery

[Steven Chen_1]

Hi,

Would like to estimate about how long does it take to use ignite to make a recovery tape on a 4G root drive on K260 with 2CPUs.

Help is apprecited!

Steven

[Naveej.K.A · Accepted solution]

Hi Steven ,

On my Lclass with an 18GB root disk with around 3.5GB of data it took me around 40 minutes for the make_tape_recovery to create the archive

It should take the same time for you too.

With best wishes.
naveej

[Michael Tully]

A typical vg00 should take 40-60 minutes depending on the server and the tape drive in question, as well other activity on the server at the time of the backup.

# make_tape_recovery -x inc_entire=vg00 -I -v -a /dev/rmt/0mn

[SS_6]

You take an average time of One hour. You have K-Class and I assume DDS drive must be slower than DDS4 drive.

[Steven E. Protter]

I was kind of wondering why tape drive wasn't mentioned as a factor.

On an L Class with Ultrium, less than 20 minutes.

Same Tape drive on a D or K, longer because the system can't use the device at full speed.

With DDS3, over an 2 hours in practice on my D Class boxes with 8 GB set to root.

SEP

[Isralyn Manalac_1]

On a K-class machine, you would probably have a DDS2/3 tape drive. As such, the make_tape_recovery process will take between 40 to 60 minutes.

[Steven Chen_1]

Thank you all guys!

One last question (forget to ask):

How long does it take to recover from bootable tape? (K260, 2CPUs, DDS3 tape drive).