Hi Brendon,
First of all -- Thank you ver much for helping me with this ...
Before I received your last reply the customer sent me the following. => I will send them the information on your last reply and ask them how many files in 32TB.
EMAIL FROM CUSTOMER:
I'll just add a little here so that we can work out how many Tape Drives we need to supply to exceed the 12 hour backup window here.
We have 32TB of data to be backed up which equates to 2.67TB per hour to achieve a 12 hour backup window.
Each LTO5 drive operates at a maximum transfer rate of 140MB/s which give a throughput of up to 504GB per hour.
Realistically we need to be backing up data at a rate of around 3TB per hour which equates to approx 6 tape devices, taking approx 10 hours to back up these devices.
The FAS3240 has 2 x 4GB/s FC Ports on the controllers, effectively giving you 2 x 400Mb/s connections to the tape devices. So each controller will be able to stream to 4 tape devices simultaneously (4 x 140MB/s = 560MB/s, allowing for tape changes etc), so potentially we could stream to 8 tape devices via the FC HBA ports on the controllers, assuming the tape devices were connected to a dedicated tape SAN. If we use this configuration we need to provide Host FC HBA Ports in one of the expansion slots to ensure we have host connectivity, as we can't use the onboard ports if these are used for Tape connectivity. (Elias - Hence the need for 4 x FC Ports per controller, not the 2 we have to use on the FAS3200 series, and Ideally running at 8GB/s as most new devices such as LTO5 Drives and now available with 8GB/s fibre - Subtle dig over Matey 🙂 )
So to back up the 32TB of data we need the following additions:-
2 x Brocade 320E SAN switches with at least 8 ports licensed, Full Fabric Licensing
Tape Library with 6 x LTO5 FC Attached drives. Needs to be expandable above 6 drives.
Selection of blank media (each backup will use approx 22 tapes [assuming 1.5TB per tape])
2 x LTO5 Cleaning tapes.
2 x Dual Port 8Gb/s Target Host adapter cards for FAS3240's - To provide Host Connectivity for the FAS3240.
10 x 5m LC/LC Multimode Fibre Patch cables (OM3 - 125/50)
Thank you very much for your assistance,
Regards,