diff --git a/README.md b/README.md
index 1f10b83..f184962 100644
--- a/README.md
+++ b/README.md
@@ -484,16 +484,15 @@ clickhousectl cloud postgres get <pg-id>
 clickhousectl cloud postgres create \
   --name my-pg \
   --region us-east-1 \
-  --size m7i.2xlarge \
-  --storage-gb 100
+  --size c6gd.xlarge \
+  --pg-version 18
 
-# Create with version + HA + tags + advanced config
+# Create with HA + tags + advanced config
 clickhousectl cloud postgres create \
   --name my-pg \
   --region us-east-1 \
-  --size m7i.2xlarge \
-  --storage-gb 100 \
-  --pg-version 17 \
+  --size c6gd.xlarge \
+  --pg-version 18 \
   --ha-type sync \
   --tag env=prod \
   --pg-config-file ./pg.json
@@ -502,7 +501,6 @@ clickhousectl cloud postgres create \
 clickhousectl cloud postgres update <pg-id> \
   --name renamed \
   --size m7i.4xlarge \
-  --storage-gb 200 \
   --add-tag env=prod --remove-tag legacy
 
 # Delete
@@ -538,7 +536,6 @@ clickhousectl cloud postgres switchover <pg-id>
 | `--name` | Service name (required) |
 | `--region` | Cloud region, e.g. `us-east-1` (required) |
 | `--size` | Instance size, e.g. `m7i.2xlarge` (required; server-validated) |
-| `--storage-gb` | Storage size in GB (required) |
 | `--provider` | Cloud provider (default: `aws`) |
 | `--pg-version` | Postgres major version: `18`, `17`, `16` |
 | `--ha-type` | High-availability: `none`, `async`, `sync` |
diff --git a/crates/clickhouse-cloud-api/src/models.rs b/crates/clickhouse-cloud-api/src/models.rs
index 38ac676..1e66278 100644
--- a/crates/clickhouse-cloud-api/src/models.rs
+++ b/crates/clickhouse-cloud-api/src/models.rs
@@ -7860,8 +7860,6 @@ pub struct BasePostgresService {
     pub region: PgRegion,
     #[serde(default)]
     pub size: PgSize,
-    #[serde(rename = "storageSize", default)]
-    pub storage_size: PgStorageSize,
     #[serde(default)]
     pub tags: PgTags,
 }
@@ -10497,8 +10495,6 @@ pub struct PostgresServiceListItem {
     pub size: PgSize,
     #[serde(default)]
     pub state: PgStateProperty,
-    #[serde(rename = "storageSize", default)]
-    pub storage_size: PgStorageSize,
     #[serde(default)]
     pub tags: PgTags,
 }
@@ -10525,8 +10521,6 @@ pub struct PostgresServicePatchRequest {
     pub region: Option<PgRegion>,
     #[serde(skip_serializing_if = "Option::is_none", default)]
     pub size: Option<PgSize>,
-    #[serde(rename = "storageSize", skip_serializing_if = "Option::is_none", default)]
-    pub storage_size: Option<PgStorageSize>,
     #[serde(skip_serializing_if = "Option::is_none", default)]
     pub tags: Option<PgTags>,
 }
@@ -10546,8 +10540,6 @@ pub struct PostgresServicePostRequest {
     pub provider: PgProvider,
     pub region: PgRegion,
     pub size: PgSize,
-    #[serde(rename = "storageSize")]
-    pub storage_size: PgStorageSize,
     #[serde(skip_serializing_if = "Option::is_none", default)]
     pub tags: Option<PgTags>,
 }
diff --git a/crates/clickhouse-cloud-api/tests/clickpipes/postgres_cdc_test.rs b/crates/clickhouse-cloud-api/tests/clickpipes/postgres_cdc_test.rs
index 4f08a33..0b7e45b 100644
--- a/crates/clickhouse-cloud-api/tests/clickpipes/postgres_cdc_test.rs
+++ b/crates/clickhouse-cloud-api/tests/clickpipes/postgres_cdc_test.rs
@@ -109,7 +109,6 @@ async fn cloud_clickpipe_postgres_cdc() -> TestResult<()> {
             provider: PgProvider::Unknown(ctx.provider.clone()),
             region: ctx.region.clone(),
             size: PgSize::R8gd_medium,
-            storage_size: 59,
             tags: Some(ctx.clickpipe_run_tags()),
             ..Default::default()
         };
diff --git a/crates/clickhouse-cloud-api/tests/client_test.rs b/crates/clickhouse-cloud-api/tests/client_test.rs
index ee15ad5..0c2080d 100644
--- a/crates/clickhouse-cloud-api/tests/client_test.rs
+++ b/crates/clickhouse-cloud-api/tests/client_test.rs
@@ -1963,7 +1963,7 @@ async fn create_postgres_service() {
 
     Mock::given(method("POST"))
         .and(path("/v1/organizations/org-1/postgres"))
-        .and(body_partial_json(serde_json::json!({"name": "pg-svc", "provider": "aws", "region": "us-east-1", "size": "c6gd.medium", "storageSize": 100})))
+        .and(body_partial_json(serde_json::json!({"name": "pg-svc", "provider": "aws", "region": "us-east-1", "size": "c6gd.medium"})))
         .respond_with(ok_json(serde_json::json!({
             "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
             "name": "pg-svc",
@@ -1980,7 +1980,6 @@ async fn create_postgres_service() {
         provider: PgProvider::Aws,
         region: "us-east-1".to_string(),
         size: PgSize::C6gd_medium,
-        storage_size: 100,
         ..Default::default()
     };
     let resp = c
diff --git a/crates/clickhouse-cloud-api/tests/integration_postgres_test.rs b/crates/clickhouse-cloud-api/tests/integration_postgres_test.rs
index 8833a29..e0c355d 100644
--- a/crates/clickhouse-cloud-api/tests/integration_postgres_test.rs
+++ b/crates/clickhouse-cloud-api/tests/integration_postgres_test.rs
@@ -14,7 +14,6 @@ async fn cloud_postgres_crud_lifecycle() -> TestResult<()> {
         log_run_header("cloud_postgres_crud_lifecycle", &ctx);
         let mut failures = FailureRecorder::default();
         let size = PgSize::R8gd_medium;
-        let storage_gb: i64 = 59;
 
         // ── Preflight ───────────────────────────────────────────────
 
@@ -57,7 +56,6 @@ async fn cloud_postgres_crud_lifecycle() -> TestResult<()> {
             provider: PgProvider::Unknown(ctx.provider.clone()),
             region: ctx.region.clone(),
             size: size.clone(),
-            storage_size: storage_gb,
             tags: Some(ctx.postgres_run_tags()),
             ..Default::default()
         };
@@ -122,7 +120,6 @@ async fn cloud_postgres_crud_lifecycle() -> TestResult<()> {
 
         assert_eq!(ready.name, ctx.postgres_service_name());
         assert_eq!(ready.size.to_string(), size.to_string());
-        assert_eq!(ready.storage_size, storage_gb);
         assert_eq!(ready.region, ctx.region);
         assert_eq!(ready.provider.to_string(), ctx.provider);
         assert!(
diff --git a/crates/clickhouse-cloud-api/tests/models_test.rs b/crates/clickhouse-cloud-api/tests/models_test.rs
index e414ea1..1168f6f 100644
--- a/crates/clickhouse-cloud-api/tests/models_test.rs
+++ b/crates/clickhouse-cloud-api/tests/models_test.rs
@@ -627,7 +627,6 @@ fn serialize_postgres_service_post_request() {
         provider: PgProvider::Aws,
         region: "us-east-1".to_string(),
         size: PgSize::C6gd_medium,
-        storage_size: 100,
         ..Default::default()
     };
     let json = serde_json::to_value(&req).unwrap();
@@ -635,7 +634,7 @@ fn serialize_postgres_service_post_request() {
     assert_eq!(json["provider"], "aws");
     assert_eq!(json["region"], "us-east-1");
     assert_eq!(json["size"], "c6gd.medium");
-    assert_eq!(json["storageSize"], 100);
+    assert!(json.get("storageSize").is_none());
     // Optional fields omitted
     assert!(json.get("haType").is_none());
     assert!(json.get("pgConfig").is_none());
diff --git a/crates/clickhousectl/src/cloud/cli.rs b/crates/clickhousectl/src/cloud/cli.rs
index 029b9cd..85ee720 100644
--- a/crates/clickhousectl/src/cloud/cli.rs
+++ b/crates/clickhousectl/src/cloud/cli.rs
@@ -2672,7 +2672,7 @@ mod tests {
         );
 
         // Postgres writes
-        assert_write(&["clickhousectl", "cloud", "postgres", "create", "--name", "pg", "--region", "us-east-1", "--size", "m7i.2xlarge", "--storage-gb", "100"], true);
+        assert_write(&["clickhousectl", "cloud", "postgres", "create", "--name", "pg", "--region", "us-east-1", "--size", "m7i.2xlarge"], true);
         assert_write(&["clickhousectl", "cloud", "postgres", "update", "pg-1", "--name", "renamed"], true);
         assert_write(&["clickhousectl", "cloud", "postgres", "delete", "pg-1"], true);
         assert_write(&["clickhousectl", "cloud", "postgres", "config", "replace", "pg-1", "--file", "/tmp/c.json"], true);
diff --git a/crates/clickhousectl/src/cloud/postgres.rs b/crates/clickhousectl/src/cloud/postgres.rs
index 4a18282..b793385 100644
--- a/crates/clickhousectl/src/cloud/postgres.rs
+++ b/crates/clickhousectl/src/cloud/postgres.rs
@@ -46,9 +46,6 @@ pub enum PostgresCommands {
         /// Instance size (e.g. m7i.2xlarge). Server validates — accepts any value.
         #[arg(long)]
         size: String,
-        /// Storage size in GB
-        #[arg(long)]
-        storage_gb: i64,
         /// Cloud provider
         #[arg(long, default_value = "aws")]
         provider: String,
@@ -81,8 +78,6 @@ pub enum PostgresCommands {
         #[arg(long)]
         size: Option<String>,
         #[arg(long)]
-        storage_gb: Option<i64>,
-        #[arg(long)]
         provider: Option<String>,
         #[arg(long, value_parser = clap::builder::PossibleValuesParser::new(KNOWN_PG_VERSIONS))]
         pg_version: Option<String>,
@@ -431,7 +426,6 @@ pub struct PostgresCreateOptions<'a> {
     pub name: &'a str,
     pub region: &'a str,
     pub size: &'a str,
-    pub storage_gb: i64,
     pub provider: &'a str,
     pub pg_version: Option<&'a str>,
     pub ha_type: Option<&'a str>,
@@ -445,7 +439,6 @@ pub struct PostgresUpdateOptions<'a> {
     pub name: Option<&'a str>,
     pub region: Option<&'a str>,
     pub size: Option<&'a str>,
-    pub storage_gb: Option<i64>,
     pub provider: Option<&'a str>,
     pub pg_version: Option<&'a str>,
     pub ha_type: Option<&'a str>,
@@ -598,7 +591,6 @@ pub async fn postgres_create(
         provider,
         region: opts.region.to_string(),
         size,
-        storage_size: opts.storage_gb,
         postgres_version: pg_version,
         ha_type,
         tags,
@@ -671,7 +663,6 @@ pub async fn postgres_update(
         provider,
         region: opts.region.map(|s| s.to_string()),
         size,
-        storage_size: opts.storage_gb,
         postgres_version: pg_version,
         ha_type,
         tags,
@@ -1067,10 +1058,9 @@ mod tests {
             "--name", "pg1",
             "--region", "us-east-1",
             "--size", "m7i.2xlarge",
-            "--storage-gb", "100",
         ]);
         let PostgresCommands::Create {
-            name, region, size, storage_gb, provider, pg_version, ha_type, ..
+            name, region, size, provider, pg_version, ha_type, ..
         } = cmd
         else {
             panic!("expected create");
@@ -1078,7 +1068,6 @@ mod tests {
         assert_eq!(name, "pg1");
         assert_eq!(region, "us-east-1");
         assert_eq!(size, "m7i.2xlarge");
-        assert_eq!(storage_gb, 100);
         assert_eq!(provider, "aws");
         assert!(pg_version.is_none());
         assert!(ha_type.is_none());
@@ -1091,7 +1080,6 @@ mod tests {
             "--name", "pg1",
             "--region", "us-east-1",
             "--size", "m7i.2xlarge",
-            "--storage-gb", "100",
             "--pg-version", "17",
             "--ha-type", "sync",
             "--tag", "env=prod",
@@ -1111,10 +1099,10 @@ mod tests {
             "clickhousectl", "cloud", "postgres", "create",
             "--name", "pg1",
             "--region", "us-east-1",
-            // missing --size and --storage-gb
+            // missing --size
         ])
         .err().expect("expected parse error");
-        assert!(err.to_string().contains("--size") || err.to_string().contains("--storage-gb"));
+        assert!(err.to_string().contains("--size"));
     }
 
     #[test]
@@ -1124,7 +1112,6 @@ mod tests {
             "--name", "pg1",
             "--region", "us-east-1",
             "--size", "m7i.2xlarge",
-            "--storage-gb", "100",
             "--pg-version", "15",
         ])
         .err().expect("expected parse error");
diff --git a/crates/clickhousectl/src/main.rs b/crates/clickhousectl/src/main.rs
index 5ab6393..9d1ac41 100644
--- a/crates/clickhousectl/src/main.rs
+++ b/crates/clickhousectl/src/main.rs
@@ -1011,7 +1011,6 @@ async fn run_postgres(
             name,
             region,
             size,
-            storage_gb,
             provider,
             pg_version,
             ha_type,
@@ -1024,7 +1023,6 @@ async fn run_postgres(
                 name: &name,
                 region: &region,
                 size: &size,
-                storage_gb,
                 provider: &provider,
                 pg_version: pg_version.as_deref(),
                 ha_type: ha_type.as_deref(),
@@ -1040,7 +1038,6 @@ async fn run_postgres(
             name,
             region,
             size,
-            storage_gb,
             provider,
             pg_version,
             ha_type,
@@ -1052,7 +1049,6 @@ async fn run_postgres(
                 name: name.as_deref(),
                 region: region.as_deref(),
                 size: size.as_deref(),
-                storage_gb,
                 provider: provider.as_deref(),
                 pg_version: pg_version.as_deref(),
                 ha_type: ha_type.as_deref(),