diff --git a/internal/monitoring/physical_disk_pool_membership.go b/internal/monitoring/physical_disk_pool_membership.go
index 1d4add882..209317309 100644
--- a/internal/monitoring/physical_disk_pool_membership.go
+++ b/internal/monitoring/physical_disk_pool_membership.go
@@ -74,6 +74,7 @@ func (a *diskPoolAssignment) lookup(disk models.PhysicalDisk) string {
 	}
 	wwn := strings.ToLower(strings.TrimSpace(disk.WWN))
 	wwn = strings.TrimPrefix(wwn, "0x")
+	wwn = strings.TrimPrefix(wwn, "eui.")
 	if wwn != "" {
 		if pool, ok := a.serialPool[wwn]; ok {
 			return pool
@@ -197,6 +198,12 @@ func serialFromByID(raw string) string {
 	if idx := strings.LastIndex(name, "-part"); idx > 0 {
 		name = name[:idx]
 	}
+	// NVMe pools are often built from nvme-eui.<hex> references (the
+	// installer's pick when identical models share a box); the hex is the
+	// device's WWN/EUI, which smartctl reports as "eui.<hex>" or "0x<hex>".
+	if strings.HasPrefix(name, "nvme-eui.") {
+		return strings.TrimPrefix(name, "nvme-eui.")
+	}
 	// The last underscore-separated token is typically the serial.
 	if idx := strings.LastIndex(name, "_"); idx > 0 {
 		return name[idx+1:]
diff --git a/internal/monitoring/physical_disk_pool_membership_test.go b/internal/monitoring/physical_disk_pool_membership_test.go
index 7addc6d50..4cebdf6cc 100644
--- a/internal/monitoring/physical_disk_pool_membership_test.go
+++ b/internal/monitoring/physical_disk_pool_membership_test.go
@@ -34,6 +34,12 @@ func TestDiskPoolAssignmentLookup(t *testing.T) {
 				{Name: "wwn-0x50014ee2123456ab", Leaf: 1},
 			},
 		},
+		{
+			Name: "flash",
+			Devices: []proxmox.ZFSPoolDevice{
+				{Name: "/dev/disk/by-id/nvme-eui.0025385b91501234-part3", Leaf: 1},
+			},
+		},
 	}
 
 	assignment := buildDiskPoolAssignment(pools)
@@ -48,6 +54,16 @@ func TestDiskPoolAssignmentLookup(t *testing.T) {
 			disk:  models.PhysicalDisk{DevPath: "/dev/sda", Serial: "S5Y2NX0R500001Z"},
 			want:  "rpool",
 		},
+		{
+			label: "nvme-eui by-id leaf matches disk WWN in eui form",
+			disk:  models.PhysicalDisk{DevPath: "/dev/nvme0n1", WWN: "eui.0025385B91501234"},
+			want:  "flash",
+		},
+		{
+			label: "nvme-eui by-id leaf matches disk WWN in 0x form",
+			disk:  models.PhysicalDisk{DevPath: "/dev/nvme0n1", WWN: "0x0025385b91501234"},
+			want:  "flash",
+		},
 		{
 			label: "short leaf name matches partition-stripped devpath",
 			disk:  models.PhysicalDisk{DevPath: "/dev/sdc"},