Update validator node requirements and examples. (#368)

* Update validator node requirements and examples

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

* Update storage specification to NVMe SSD

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

* Update storage specification for validator node

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

* Update CPU specification for validator node

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

---------

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

Author: grao1991

src/content/docs/network/nodes/validator-node/node-requirements.mdx

@@ -44,22 +44,21 @@ satisfy the requirements outlined below).
 
 **Specifications for Running an Aptos Validator and VFN on Mainnet**
 
-| Component            | Specification                                                     |
-| -------------------- | ----------------------------------------------------------------- |
-| CPU                  | 32 cores, 2.8GHz or faster, AMD Milan EPYC or Intel Xeon Platinum |
-| Memory               | 64GB RAM                                                          |
-| Storage              | 3.0 TB SSD with at least 60K IOPS and 200MiB/s bandwidth          |
-| Networking Bandwidth | 1Gbps                                                             |
+| Component            | Specification                                                                   |
+| -------------------- | --------------------------------------------------------------------------------|
+| CPU                  | 48 threads,	5th Gen AMD EPYC (Turin) or 6th Gen Intel Xeon (Granite Rapids)    |
+| Memory               | 128GB RAM                                                                       |
+| Storage              | 3.0 TB Enterprise NVMe SSD with at least 60K IOPS and 600MiB/s bandwidth        |
+| Networking Bandwidth | 1Gbps                                                                           |
 
 **Example Machine Types on Various Clouds**
 
-| Cloud Provider | Machine Type                      | Notes                |
-| -------------- | --------------------------------- | -------------------- |
-| AWS            | c6id.16xlarge                     | If using a local SSD |
-| AWS            | c6i.16xlarge + io2 EBS volume     | With 60K IOPS        |
-| GCP            | t2d-standard-60 + pd-ssd          | With 60K IOPS        |
-| Azure          | Standard\_D64\_v5                 | With 64K IOPS        |
-| Latitude.sh    | m4.large, rs4.large or rs4.xlarge | With 64K IOPS        |
+| Cloud Provider | Machine Type                                                 | Notes                |
+| -------------- | ------------------------------------------------------------ | -------------------- |
+| AWS            | c8a.16xlarge + io2 EBS volume or multiple gp3 EBS volumes    | With 60K IOPS        |
+| GCP            | c4d-standard-48 + hyperdisk-balanced                         | With 60K IOPS        |
+| Azure          | Standard_F48as_v7                                            | With 60K IOPS        |
+| Latitude.sh    | f4.metal.large                                               | With 60K IOPS        |
 
 ### Performance benchmarking