Add NVMe and 16000 IOPS to requirements (#1343)

Author: JakeSCahill

modules/deploy/partials/requirements.adoc

@@ -134,6 +134,12 @@ endif::[]
 
 *Requirements*:
 
+- NVMe (Non-Volatile Memory Express) drives are required for production deployments. NVMe drives provide the high throughput and low latency needed for optimal Redpanda performance.
+
+- At least 16,000 IOPS (Input/Output Operations Per Second).
++
+See also: xref:manage:cluster-maintenance/cluster-diagnostics.adoc#self-test[Disk and network self-test benchmarks].
+
 - An XFS or ext4 file system.
 +
 The Redpanda data directory (`/var/lib/redpanda/data`) and the Tiered Storage cache must be mounted on an XFS or ext4 file system.

modules/deploy/partials/self-test.adoc

@@ -2,4 +2,6 @@
 
 To understand the performance capabilities of your Redpanda cluster, Redpanda offers built-in self-test features that evaluate the performance of both disk and network operations.
 
-For more information, see xref:manage:cluster-maintenance/cluster-diagnostics.adoc#self-test[Disk and network self-test benchmarks].
+For more information, see xref:manage:cluster-maintenance/cluster-diagnostics.adoc#self-test[Disk and network self-test benchmarks].
+
+When using the storage bandwidth test, ensure that your results show at least 16,000 IOPS (Input/Output Operations Per Second) for production environments. If your test results are below this threshold, your storage may not be suitable for production Redpanda workloads.