I've read that article. It does not take into account that we are using virtual disks and not actual physical ones, where manufacturers count 1,000,000,000,000 bytes as a Terabyte. When we add 2TB disk in VMware - it is actually TB of size, or 2199023255552 bytes. As shown in PAN-OS itself. Disk /dev/sdb: 2199.0 GB, 2199023255552 bytes, 4294967296 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: gpt # Start End Size Type Name 1 20480 3706898431 1.7T Microsoft basic primary But for some reason it undersizes the partition and allocates only a range of 20480 - 3706898431 sectors, leaving us with 1897921510912 total bytes worth of storage. Which is actually 1.89 TB, not 1.7 TB. But I guess there is some overhead. In any case - 588048385 sectors or ~300GB of storage goes "missing" after partitioning. That adds up to 3.6 TB of space if we add 12 drives. Significant, don't you think?
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