Там пишут про конкретный tcp стек и железный анализатор в разрыве
A key lesson of this paper is that seemingly minor packet loss rates could have an outsized impact on overall
performance for ESXi networked storage (NFS, iSCSI, vSAN). We recommend customers who are using ESXi
networked storage and have a highly performance sensitive application to consider taking steps to identify
and mitigate these undesirable interactions if appropriate.