diff --git a/apps/studio/components/interfaces/Settings/Infrastructure/InfrastructureConfiguration/HaTopology.utils.ts b/apps/studio/components/interfaces/Settings/Infrastructure/InfrastructureConfiguration/HaTopology.utils.ts
index 1624caf53b2..8c1867d6105 100644
--- a/apps/studio/components/interfaces/Settings/Infrastructure/InfrastructureConfiguration/HaTopology.utils.ts
+++ b/apps/studio/components/interfaces/Settings/Infrastructure/InfrastructureConfiguration/HaTopology.utils.ts
@@ -54,6 +54,8 @@ export const getPoolerStatus = (pooler: Multipooler): HaPoolerStatus => {
   // Lifecycle values may arrive with or without the proto enum prefix.
   const lifecycle = (pooler.lifecycleStatus?.status ?? '').replace(/^LIFECYCLE_/, '')
 
+  // The proto's two terminal states: QUARANTINED (gave up recovering, kept alive
+  // for forensics) and SHUTDOWN (durably down). There is no separate FAILED state.
   if (lifecycle === 'QUARANTINED' || lifecycle === 'SHUTDOWN') return 'unhealthy'
   if (lifecycle === 'STARTING') return 'coming_up'
   if (lifecycle === 'STOPPING') return 'going_down'
@@ -66,7 +68,12 @@ export const getPoolerStatus = (pooler: Multipooler): HaPoolerStatus => {
   return 'healthy'
 }
 
-// Matches the status vocabulary of the read replica surfaces (getStatusLabel).
+// Labels are drawn from the read replica status vocabulary (`getStatusLabel` in
+// ReadReplicas.utils.ts) so both surfaces read the same way, but they are only a
+// subset of it. The read replica labels also cover 'Failed', 'Restarting',
+// 'Resizing' and 'Restoring', which have no one-to-one lifecycle equivalents;
+// the closest to 'Failed' is QUARANTINED, surfaced as 'Unhealthy' alongside
+// SHUTDOWN.
 export const HA_POOLER_STATUS_LABELS: Record<HaPoolerStatus, string> = {
   healthy: 'Healthy',
   coming_up: 'Coming up',
diff --git a/apps/studio/data/ha-admin/ha-cluster-cells-query.ts b/apps/studio/data/ha-admin/ha-cluster-cells-query.ts
deleted file mode 100644
index d5571f502c3..00000000000
--- a/apps/studio/data/ha-admin/ha-cluster-cells-query.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-import { queryOptions } from '@tanstack/react-query'
-import { z } from 'zod'
-
-import { getHaAdmin, parseHaAdminResponse } from './get-ha-admin'
-import { haAdminKeys } from './keys'
-import { IS_PLATFORM } from '@/lib/constants'
-import type { ResponseError } from '@/types'
-
-export type HaClusterCellsVariables = { projectRef?: string }
-export type HaClusterCellsError = ResponseError
-
-// Every field is optional because proto3 JSON omits zero values.
-const haClusterCellsResponseSchema = z.object({ names: z.array(z.string()).optional() })
-
-async function getHaClusterCells({ projectRef }: HaClusterCellsVariables, signal?: AbortSignal) {
-  const data = await getHaAdmin(projectRef, 'cells', signal)
-  return parseHaAdminResponse(haClusterCellsResponseSchema, data)
-}
-
-export type HaClusterCellsData = Awaited<ReturnType<typeof getHaClusterCells>>
-
-export const haClusterCellsQueryOptions = ({ projectRef }: HaClusterCellsVariables) =>
-  queryOptions({
-    queryKey: haAdminKeys.cells(projectRef),
-    queryFn: ({ signal }) => getHaClusterCells({ projectRef }, signal),
-    enabled: IS_PLATFORM && typeof projectRef !== 'undefined',
-  })
diff --git a/apps/studio/data/ha-admin/ha-cluster-databases-query.ts b/apps/studio/data/ha-admin/ha-cluster-databases-query.ts
deleted file mode 100644
index 15cfd3adfb1..00000000000
--- a/apps/studio/data/ha-admin/ha-cluster-databases-query.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { queryOptions } from '@tanstack/react-query'
-import { z } from 'zod'
-
-import { getHaAdmin, parseHaAdminResponse } from './get-ha-admin'
-import { haAdminKeys } from './keys'
-import { IS_PLATFORM } from '@/lib/constants'
-import type { ResponseError } from '@/types'
-
-export type HaClusterDatabasesVariables = { projectRef?: string }
-export type HaClusterDatabasesError = ResponseError
-
-// Every field is optional because proto3 JSON omits zero values.
-const haClusterDatabasesResponseSchema = z.object({ names: z.array(z.string()).optional() })
-
-async function getHaClusterDatabases(
-  { projectRef }: HaClusterDatabasesVariables,
-  signal?: AbortSignal
-) {
-  const data = await getHaAdmin(projectRef, 'databases', signal)
-  return parseHaAdminResponse(haClusterDatabasesResponseSchema, data)
-}
-
-export type HaClusterDatabasesData = Awaited<ReturnType<typeof getHaClusterDatabases>>
-
-export const haClusterDatabasesQueryOptions = ({ projectRef }: HaClusterDatabasesVariables) =>
-  queryOptions({
-    queryKey: haAdminKeys.databases(projectRef),
-    queryFn: ({ signal }) => getHaClusterDatabases({ projectRef }, signal),
-    enabled: IS_PLATFORM && typeof projectRef !== 'undefined',
-  })
diff --git a/apps/studio/data/ha-admin/ha-cluster-poolers-query.ts b/apps/studio/data/ha-admin/ha-cluster-poolers-query.ts
index b88b12cbc14..bc6a23c9d82 100644
--- a/apps/studio/data/ha-admin/ha-cluster-poolers-query.ts
+++ b/apps/studio/data/ha-admin/ha-cluster-poolers-query.ts
@@ -28,6 +28,15 @@ const multipoolerSchema = z.object({
   // 'SERVING' | 'DISABLED' | 'DRAINING'
   servingStatus: z.string().optional(),
   hostname: z.string().optional(),
+  // `PoolerLifecycleStatus` (multigres proto/clustermetadata.proto):
+  // 'STARTING' | 'ACTIVE' | 'STOPPING' | 'SHUTDOWN' | 'QUARANTINED', optionally
+  // prefixed with 'LIFECYCLE_'. 'LIFECYCLE_UNKNOWN' is the zero value, so it is
+  // omitted from JSON. There is no dedicated failure member — QUARANTINED is the
+  // terminal failure state (the pooler gave up recovering, e.g. a failed
+  // pg_rewind or backup restore, and is kept alive for forensics) and SHUTDOWN is
+  // "durably down". `getPoolerStatus` maps every member. An unrecognized value
+  // (a future enum member) falls through to the `servingStatus` check, and since
+  // SERVING is that enum's zero value it usually renders as Healthy until mapped.
   lifecycleStatus: z.object({ status: z.string().optional() }).optional(),
   routingState: z
     .object({
diff --git a/apps/studio/data/ha-admin/keys.ts b/apps/studio/data/ha-admin/keys.ts
index 3193018650a..d07096e90a5 100644
--- a/apps/studio/data/ha-admin/keys.ts
+++ b/apps/studio/data/ha-admin/keys.ts
@@ -1,7 +1,4 @@
 export const haAdminKeys = {
-  cells: (projectRef: string | undefined) => ['projects', projectRef, 'ha-admin', 'cells'] as const,
-  databases: (projectRef: string | undefined) =>
-    ['projects', projectRef, 'ha-admin', 'databases'] as const,
   poolers: (projectRef: string | undefined) =>
     ['projects', projectRef, 'ha-admin', 'poolers'] as const,
   gateways: (projectRef: string | undefined) =>