I am about to size the cache size for the source and target WA for one of my customer, I have the parameters for my calculation. But i need verification on the calculation before i submit it.
OS Type = 2
VM's = 9 VM's
Provisioned Storage = 8.5 TB (for 9 VM's)
Source WA
Digest Size = 5% of Provisioned VM Size, 5% of 8.5 TB = 425 GB
Target WA
Global Cache Data, where each OS type = 10 GB, 2 x10 GB = 20 GB
Digest Size = 2% of Provisioned VM Size, 2 % of 8.5 TB= 170 GB
Total required on Source WA storage = 425 GB
Total required on Target WA storage = 170 GB
Normally would it be recommended to add additional 10 - 20 % buffer on the values above ?
And as always thank you all in advance

Regards,
Wen Jun.