sharding added

Author: negin513

intermediate/intro-to-zarr.ipynb

@@ -637,6 +637,14 @@
     "\n"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "139134af",
+   "metadata": {},
+   "source": [
+    "This example shows how to create a sharded Zarr array with a chunk size of `(100, 100, 100)` and a shard size of `(1000, 1000, 1000)`. This means that each shard will contain 10 chunks, and each chunk will be of size `(100, 100, 100)`.\n"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -657,6 +665,17 @@
     "z6.info"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "28877070",
+   "metadata": {},
+   "source": [
+    "\n",
+    "```{tip}\n",
+    "Choose shard and chunk sizes that balance I/O performance and manageability for your filesystem or cloud backend.\n",
+    "```"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "1e0d1a8e",