Yotta byte

-bash-2.05b$ df -k /auto/share
Filesystem           1K-blocks      Used Available Use% Mounted on
***share3.nfs:/vol/***3/share
                     77371252437321868667518976         0 77371252437321868667518976   0% /auto/share
-bash-2.05b$ df -h /auto/share
Filesystem            Size  Used Avail Use% Mounted on
***share3.nfs:/vol/***3/share
                     65536Y     0 65536Y   0% /auto/share
-bash-2.05b$

Yotta バイト、実際に見たのは多分初めて。