I doubt that since the disk that was never replaced had gptidNot having the gptid might be sign of a hardware (controller) issue.
Code:
gpart list Geom name: ada0 modified: false state: OK fwheads: 16 fwsectors: 63 last: 3907029127 first: 40 entries: 128 scheme: GPT Providers: 1. Name: ada0p1 Mediasize: 2147483648 (2.0G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(1,GPT,9e51ede7-2030-11ea-b2ff-7085c25f11d1,0x80,0x400000) rawuuid: 9e51ede7-2030-11ea-b2ff-7085c25f11d1 rawtype: 516e7cb5-6ecf-11d6-8ff8-00022d09712b label: (null) length: 2147483648 offset: 65536 type: freebsd-swap index: 1 end: 4194431 start: 128 2. Name: ada0p2 Mediasize: 1998251364352 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(2,GPT,a799872b-2030-11ea-b2ff-7085c25f11d1,0x400080,0xe8a08808) rawuuid: a799872b-2030-11ea-b2ff-7085c25f11d1 rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b label: (null) length: 1998251364352 offset: 2147549184 type: freebsd-zfs index: 2 end: 3907029127 start: 4194432 Consumers: 1. Name: ada0 Mediasize: 2000398934016 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r2w2e4 Geom name: ada2 modified: false state: OK fwheads: 16 fwsectors: 63 last: 3907029127 first: 40 entries: 128 scheme: GPT Providers: 1. Name: ada2p1 Mediasize: 2147483648 (2.0G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(1,GPT,d29a2ca8-7acf-11eb-aa59-7085c25f11d1,0x80,0x400000) rawuuid: d29a2ca8-7acf-11eb-aa59-7085c25f11d1 rawtype: 516e7cb5-6ecf-11d6-8ff8-00022d09712b label: (null) length: 2147483648 offset: 65536 type: freebsd-swap index: 1 end: 4194431 start: 128 2. Name: ada2p2 Mediasize: 1998251364352 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(2,GPT,eb78e373-7acf-11eb-aa59-7085c25f11d1,0x400080,0xe8a08808) rawuuid: eb78e373-7acf-11eb-aa59-7085c25f11d1 rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b label: (null) length: 1998251364352 offset: 2147549184 type: freebsd-zfs index: 2 end: 3907029127 start: 4194432 Consumers: 1. Name: ada2 Mediasize: 2000398934016 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r2w2e4 Geom name: ada1 modified: false state: OK fwheads: 16 fwsectors: 63 last: 15628053127 first: 40 entries: 128 scheme: GPT Providers: 1. Name: ada1p1 Mediasize: 2147483648 (2.0G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(1,GPT,fb438f93-9265-11ed-be0b-7085c25f11d1,0x80,0x400000) rawuuid: fb438f93-9265-11ed-be0b-7085c25f11d1 rawtype: 516e7cb5-6ecf-11d6-8ff8-00022d09712b label: (null) length: 2147483648 offset: 65536 type: freebsd-swap index: 1 end: 4194431 start: 128 2. Name: ada1p2 Mediasize: 7999415652352 (7.3T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e2 efimedia: HD(2,GPT,fb50dea3-9265-11ed-be0b-7085c25f11d1,0x400080,0x3a3412a08) rawuuid: fb50dea3-9265-11ed-be0b-7085c25f11d1 rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b label: (null) length: 7999415652352 offset: 2147549184 type: freebsd-zfs index: 2 end: 15628053127 start: 4194432 Consumers: 1. Name: ada1 Mediasize: 8001563222016 (7.3T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r2w2e5 Geom name: ada3 modified: false state: OK fwheads: 16 fwsectors: 63 last: 3907029127 first: 40 entries: 128 scheme: GPT Providers: 1. Name: ada3p1 Mediasize: 2147483648 (2.0G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(1,GPT,14b75f55-b803-11eb-8966-7085c25f11d1,0x80,0x400000) rawuuid: 14b75f55-b803-11eb-8966-7085c25f11d1 rawtype: 516e7cb5-6ecf-11d6-8ff8-00022d09712b label: (null) length: 2147483648 offset: 65536 type: freebsd-swap index: 1 end: 4194431 start: 128 2. Name: ada3p2 Mediasize: 1998251364352 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e1 efimedia: HD(2,GPT,1b8422cd-b803-11eb-8966-7085c25f11d1,0x400080,0xe8a08808) rawuuid: 1b8422cd-b803-11eb-8966-7085c25f11d1 rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b label: (null) length: 1998251364352 offset: 2147549184 type: freebsd-zfs index: 2 end: 3907029127 start: 4194432 Consumers: 1. Name: ada3 Mediasize: 2000398934016 (1.8T) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r2w2e4 Geom name: da0 modified: false state: OK fwheads: 255 fwsectors: 63 last: 30031215 first: 40 entries: 128 scheme: GPT Providers: 1. Name: da0p1 Mediasize: 272629760 (260M) Sectorsize: 512 Stripesize: 0 Stripeoffset: 20480 Mode: r0w0e0 efimedia: HD(1,GPT,d6b7c845-4a66-11e8-841c-30f9edbae477,0x28,0x82000) rawuuid: d6b7c845-4a66-11e8-841c-30f9edbae477 rawtype: c12a7328-f81f-11d2-ba4b-00a0c93ec93b label: (null) length: 272629760 offset: 20480 type: efi index: 1 end: 532519 start: 40 2. Name: da0p2 Mediasize: 15103328256 (14G) Sectorsize: 512 Stripesize: 0 Stripeoffset: 272650240 Mode: r1w1e1 efimedia: HD(2,GPT,d716d376-4a66-11e8-841c-30f9edbae477,0x82028,0x1c21d40) rawuuid: d716d376-4a66-11e8-841c-30f9edbae477 rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b label: (null) length: 15103328256 offset: 272650240 type: freebsd-zfs index: 2 end: 30031207 start: 532520 Consumers: 1. Name: da0 Mediasize: 15376000000 (14G) Sectorsize: 512 Mode: r1w1e2