Answer

tape calculation with WORM

Forum|Forum|2 years ago
June 11, 2023
3 comments
519 views

D

+1

dika
Comes here often

hello everyone,

I have already made a sizing of tape consumption using https://calculator.veeam.com/vbr/ & https://rps.dewin.me/rpc/

with

Total Data :109 TB & backup policy

daily : 6, weekly : 4, Monthly: 12

so i want to know that, how many tape cartridges LTO9 do i need for a month ?

is it right if i use formula

in the first month :

Full (120/18 = 7) + Incremental (30/18=2) + 3 weeks (180/19=10) + 1 month(60/18=3) = 22 Tape Catridges LTO 9

in the second month :

Full (120/18 = 7) + Incremental (30/18=2) + 3 weeks (180/19=10) + 1 month(60/18=3) = 22 Tape Catridges LTO 9

so for 2 month I need 44 Tape catridges LTO 9

Best answer by Chris.Childerhose

You also need to look at capacity of the LTO9 tapes which is 18TB native and 45TB compressed at the best scenario. Is compression enabled on your tape drive if so you may not need as many. The calculations above are good just look at tape capacity now.

+21

Chris.Childerhose
Veeam Legend, Veeam Vanguard
Answer
Forum|Forum|2 years ago
June 11, 2023

You also need to look at capacity of the LTO9 tapes which is 18TB native and 45TB compressed at the best scenario. Is compression enabled on your tape drive if so you may not need as many. The calculations above are good just look at tape capacity now.