I have just received a big bunch of samsun pm863a SSD. Unfortunately some of them have doesn't contain "SAMSUNG" in the beginning of their name so the current "SAMSUNG MZ7*" quirks is not enabled for them.
[19:36 root@sh-3-11-fbsd][~]# geom disk list da120 Geom name: da120 Providers: 1. Name: da120 Mediasize: 960197124096 (894G) Sectorsize: 512 Stripesize: 4096 Stripeoffset: 0 Mode: r1w1e2 descr: ATA SAMSUNG MZ7LM960 lunid: 5002538c403291cc ident: S2E3NX0H601956 rotationrate: 0 fwsectors: 63 fwheads: 255 [19:36 root@sh-3-11-fbsd][~]# geom disk list da121 Geom name: da121 Providers: 1. Name: da121 Mediasize: 960197124096 (894G) Sectorsize: 512 Mode: r1w1e2 descr: ATA MZ7LM960HMJP0D3 lunid: 5002538c404c4568 ident: S37KNX0HC01189 rotationrate: 0 fwsectors: 63 fwheads: 255
Note that, the SSD look totally identical on disk sticker...
Also, the disk FW is not identical and I cannot find an available FW to flash it but it's another subject.