diff --git a/scenarios/libs/keygen.js b/scenarios/libs/keygen.js
new file mode 100644
index 0000000..f6a9aa5
--- /dev/null
+++ b/scenarios/libs/keygen.js
@@ -0,0 +1,17 @@
+import {uuidv4} from './k6-utils-1.4.0.js';
+
+export function generateS3Key() {
+    let width = parseInt(__ENV.DIR_WIDTH || '0');
+    let height = parseInt(__ENV.DIR_HEIGHT || '0');
+  
+    let key = ''
+    if (width > 0 && height > 0) {
+      for (let index = 0; index < height; index++) {
+        const w = Math.floor(Math.random() * width) + 1;
+        key = key + 'dir' + w + '/';
+      }
+    }
+  
+    key += (__ENV.OBJ_NAME || uuidv4());
+    return key;
+}
\ No newline at end of file
diff --git a/scenarios/run_scenarios.md b/scenarios/run_scenarios.md
index 5dcb733..468340a 100644
--- a/scenarios/run_scenarios.md
+++ b/scenarios/run_scenarios.md
@@ -138,6 +138,7 @@ Options (in addition to the common options):
   * `DELETE_AGE` - age of object in seconds before which it can not be deleted. This parameter can be used to control how many objects we have in the system under load.
   * `SLEEP_DELETE` - time interval (in seconds) between deleting VU iterations.
   * `OBJ_NAME` - if specified, this name will be used for all write operations instead of random generation.
+  * `DIR_HEIGHT`, `DIR_WIDTH` - if both specified, object name will consist of `DIR_HEIGHT` directories, each of which can have `DIR_WIDTH` subdirectories, for example for `DIR_HEIGHT = 3, DIR_WIDTH = 100`, object names will be `/dir{1...100}/dir{1...100}/dir{1...100}/{uuid || OBJ_NAME}`
 
 ## S3 Multipart
 
diff --git a/scenarios/s3.js b/scenarios/s3.js
index aa707c9..d9f738c 100644
--- a/scenarios/s3.js
+++ b/scenarios/s3.js
@@ -6,10 +6,9 @@ import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
 import stats from 'k6/x/frostfs/stats';
 
-import {newGenerator} from './libs/datagen.js';
+import {generateS3Key} from './libs/keygen.js';
 import {parseEnv} from './libs/env-parser.js';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
 
 parseEnv();
 
@@ -159,7 +158,7 @@ export function obj_write() {
     sleep(__ENV.SLEEP_WRITE);
   }
 
-  const key = __ENV.OBJ_NAME || uuidv4();
+  const key = generateS3Key();
   const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
 
   const payload = generator.genPayload();
diff --git a/scenarios/s3_car.js b/scenarios/s3_car.js
index 2aaa94e..af89e09 100644
--- a/scenarios/s3_car.js
+++ b/scenarios/s3_car.js
@@ -5,10 +5,10 @@ import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
 import stats from 'k6/x/frostfs/stats';
 
+import {generateS3Key} from './libs/keygen.js';
 import {newGenerator} from './libs/datagen.js';
 import {parseEnv} from './libs/env-parser.js';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
 
 parseEnv();
 
@@ -177,7 +177,7 @@ export function obj_write() {
     sleep(__ENV.SLEEP_WRITE);
   }
 
-  const key = __ENV.OBJ_NAME || uuidv4();
+  const key = generateS3Key();
   const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
 
   const payload = generator.genPayload();
diff --git a/scenarios/s3_dar.js b/scenarios/s3_dar.js
index 5f10bd0..d9a71da 100644
--- a/scenarios/s3_dar.js
+++ b/scenarios/s3_dar.js
@@ -6,10 +6,10 @@ import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
 import stats from 'k6/x/frostfs/stats';
 
+import {generateS3Key} from './libs/keygen.js';
 import {newGenerator} from './libs/datagen.js';
 import {parseEnv} from './libs/env-parser.js';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
 
 parseEnv();
 
@@ -159,7 +159,7 @@ export function obj_write() {
         sleep(__ENV.SLEEP_WRITE);
     }
 
-    const key = __ENV.OBJ_NAME || uuidv4();
+    const key = generateS3Key();
     const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
 
     const payload = generator.genPayload();
diff --git a/scenarios/s3_multipart.js b/scenarios/s3_multipart.js
index 2b94ddc..10a6d62 100644
--- a/scenarios/s3_multipart.js
+++ b/scenarios/s3_multipart.js
@@ -5,10 +5,10 @@ import registry from 'k6/x/frostfs/registry';
 import s3 from 'k6/x/frostfs/s3';
 import stats from 'k6/x/frostfs/stats';
 
+import {generateS3Key} from './libs/keygen.js';
 import {newGenerator} from './libs/datagen.js';
 import {parseEnv} from './libs/env-parser.js';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
-import {uuidv4} from './libs/k6-utils-1.4.0.js';
 
 parseEnv();
 
@@ -101,7 +101,7 @@ export function obj_write_multipart() {
     sleep(__ENV.SLEEP_WRITE);
   }
 
-  const key = __ENV.OBJ_NAME || uuidv4();
+  const key = generateS3Key();
   const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
 
   const payload = generator.genPayload();
diff --git a/scenarios/s3local.js b/scenarios/s3local.js
index 6eaf049..f17a556 100644
--- a/scenarios/s3local.js
+++ b/scenarios/s3local.js
@@ -5,6 +5,7 @@ import registry from 'k6/x/frostfs/registry';
 import s3local from 'k6/x/frostfs/s3local';
 import stats from 'k6/x/frostfs/stats';
 
+import {generateS3Key} from './libs/keygen.js';
 import {newGenerator} from './libs/datagen.js';
 import {parseEnv} from './libs/env-parser.js';
 import {textSummary} from './libs/k6-summary-0.0.2.js';
@@ -131,7 +132,7 @@ export function handleSummary(data) {
 }
 
 export function obj_write() {
-  const key = __ENV.OBJ_NAME || uuidv4();
+  const key = generateS3Key();
   const bucket = bucket_list[Math.floor(Math.random() * bucket_list.length)];
 
   const payload = generator.genPayload();