sizeGib

Required if SizingMode is set to USER_PROVISIONED. Specifies the size of the file system's SSD read cache, in gibibytes (GiB).

The SSD read cache size is distributed across provisioned file servers in your file system. Intelligent-Tiering file systems support a minimum of 32 GiB and maximum of 131072 GiB for SSD read cache size for every 4,000 MB/s of throughput capacity provisioned.