.TH "libnvme" 9 "enum nvme_ns_id_desc_nidt_lens" "October 2026" "API Manual" LINUX .SH NAME enum nvme_ns_id_desc_nidt_lens \- Namespace Identifier Descriptor Type Lengths .SH SYNOPSIS enum nvme_ns_id_desc_nidt_lens { .br .BI " NVME_NIDT_EUI64_LEN" , .br .br .BI " NVME_NIDT_NGUID_LEN" , .br .br .BI " NVME_NIDT_UUID_LEN" , .br .br .BI " NVME_NIDT_CSI_LEN" }; .SH Constants .IP "NVME_NIDT_EUI64_LEN" 12 IEEE Extended Unique Identifier length (8 bytes) .IP "NVME_NIDT_NGUID_LEN" 12 Namespace Globally Unique Identifier length (16 bytes) .IP "NVME_NIDT_UUID_LEN" 12 Universally Unique Identifier length (16 bytes) .IP "NVME_NIDT_CSI_LEN" 12 Command Set Identifier length (1 byte)