That's really helpful.

The FC for the source and target devices are on different channels via a
SAN Director. But I suppose all the data has to go into the IBI (Power 6
V7.1) box before being written to the tape.

Those numbers are really helpful. I had planned on 5-6 tapes with normal
compression and 40 hours is in the target range of what I had estimated.


On Fri, Nov 26, 2021 at 1:36 PM Steinmetz, Paul via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

What is the speed of your FC?
Will the same FC be used for both the source and target of the DUPMEDBRM,
if so, that will lengthen the time required.
Here are some performance numbers from 2016 of my LTO5 to LTO7 migration,
using 8gb FC on a P7.

A full LTO5, 3tb compressed, 280mb/sec.
A full LTO6, 6.25tb compressed, 400mb/sec
A full LTO7, 15 tb compressed, 700mb/sec

DUPTAP of a full LTO5 to LTO5 volume previously was 10 hours.
DUPTAP of a full LTO5 to LTO7 volume is 4 hours 45 minutes.
DUPTAP of a full LTO7 to LTO7 volume is 18 hours.

Your process should take 4 to 5 LTO6 volumes, each volume about 10 hours,
so about 40 hours total.

As an Amazon Associate we earn from qualifying purchases.

This thread ...


Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2022 by and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.