re-arrange article

Author: jjaygbay

articles/azure-vmware/upgrade-hcx-azure-vmware-solutions.md

@@ -11,36 +11,75 @@ In this article, you'll learn how to upgrade Azure VMware Solution for HCX servi
 
 You can update HCX Connector and HCX Cloud systems during separate maintenance windows, but for optimal compatibility, it's recommended you update both systems together. Apply service updates during a maintenance window where no new HCX operations are queued up. 
 
-## Prerequisites 
+>[!IMPORTANT]
+>Starting with HCX 4.4.0, HCX appliances install the VMware Photon Operating System. When upgrading to HCX 4.4.x from an HCX version prior to version 4.4.0, you must also upgrade all Service Mesh appliances. 
+
+## System requirements 
 
 For systems requirements, compatibility, and upgrade prerequisites, see the [VMware HCX release notes](https://docs.vmware.com/en/VMware-HCX/index.html).  
 
-For more information about the upgrade path, see the [Product Interoperability Matrix](https://interopmatrix.vmware.com/Upgrade?productId=660) . 
+For more information about the upgrade path, see the [Product Interoperability Matrix](https://interopmatrix.vmware.com/Upgrade?productId=660). 
 
->[!IMPORTANT]
->Starting with HCX 4.4.0, HCX appliances install the VMware Photon Operating System. When upgrading to HCX 4.4.x from an HCX version prior to version 4.4.0, you must also upgrade all Service Mesh appliances. 
+Ensure HCX manager and site pair configurations are healthy.  
+
+As part of HCX update planning, and to ensure that HCX components are updated successfully, review the service update considerations and requirements. For planning HCX upgrade, see [Planning for HCX Updates](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-61F5CED2-C347-4A31-8ACB-A4553BFC62E3.html). 
+
+Ensure that you have a backup and snapshot of HCX connector in on-premises environment, if applicable. 
+
+### Backup HCX 
+Backup of HCX cloud manager configuration is done by Azure VMware solution on daily basis.  
+HCX cloud manager snapshots are taken automatically during upgrades to HCX 4.5 or later. HCX retains automatic snapshots for 24 hours before deleting them. For taking any manual snapshot on HCX cloud manager or help with reverting from a snapshot, [create a support ticket](https://ms.portal.azure.com/#view/Microsoft_Azure_Support/HelpAndSupportBlade/~/overview). 
 
 ## Upgrade HCX 
 The upgrade process is in two steps: 
-1. Upgrade HCX Manager
+1. Upgrade HCX Manager  
+      1. HCX cloud manager  
+      1. HCX connector (You can update site-paired HCX Managers simultaneously) 
 1. Upgrade HCX Service Mesh appliances 
 
 ### Upgrade HCX manager
-The VMware Solution backs up the HCX cloud manager configuration daily. HCX manager automatically takes snapshots during upgrades to HCX 4.5. HCX retains automatic snapshots for 24 hours before deleting them. For any manual snapshot or help with reverting from a snapshot, create a [support ticket](https://ms.portal.azure.com/#view/Microsoft_Azure_Support/HelpAndSupportBlade/~/overview). 
+The HCX update is first applied to the HCX Manager systems.
+ 
+**What to expect**
+- HCX manager is rebooted as part of the upgrade process.  
+- HCX vCenter Plugins will be updated.  
+- There is no data-plane outage during this procedure.
+
+**Prerequisites**
+- Verify the HCX Manager system reports healthy connections to the connected (vCenter Server, NSX Manager (if applicable). 
+- Verify the HCX Manager system reports healthy connections to the HCX Interconnect service components. (Ensure HCX is not in an out of sync state)
+- Verify that Site Pair configurations are healthy. 
+- No VM migrations should be in progress during this upgrade.
+
+**Procedure**
 
 To follow the HCX Manager upgrade process, see [Upgrading the HCX Manager](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-02DB88E1-EC81-434B-9AE9-D100E427B31C.html) 
 
 ### Upgrade HCX Service Mesh appliances 
 
-Service Mesh appliances are upgraded independently of the managers. These appliances are flagged for new available updates anytime the HCX Manager has newer software available. 
+While Service Mesh appliances are upgraded independently to the HCX Manager, they must be upgraded. These appliances are flagged for new available updates anytime the HCX Manager has newer software available.
+
+**What to expect**
+
+- Service VMs will be rebooted as part of the upgrade.
+- There is a small data plane outage during this procedure.
+- In-service upgrade of Network-extension can be considered to reduce downtime during HCX Network extension upgrades. 
+
+**Prerequisites**
+- All paired HCX Managers on both the source and the target site are updated and all services have returned to a fully converged state. 
+- Service Mesh appliances must be initiated using the HCX plug-in of vCenter or the 443 console at the source site 
+- No VM migrations should be in progress during this upgrade. 
 
+**Procedure**
+ 
 To follow the Service Mesh appliances upgrade process, see [Upgrading the HCX Service Mesh Appliances](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-EF89A098-D09B-4270-9F10-AEFA37CE5C93.html)   
 
 ## FAQ 
 
 ### What is the impact of an HCX upgrade? 
 
-Apply service updates during a maintenance window where no new HCX operations are queued up. The upgrade window accounts for a brief disruption to the Network Extension service, while the appliances are redeployed with the updated code. For individual HCX component upgrade impact, see [Planning for HCX Updates](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-61F5CED2-C347-4A31-8ACB-A4553BFC62E3.html). 
+Apply service updates during a maintenance window where no new HCX operations and migration are queued up. The upgrade window accounts for a brief disruption to the Network Extension service, while the appliances are redeployed with the updated code.  
+For individual HCX component upgrade impact, see [Planning for HCX Updates](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-61F5CED2-C347-4A31-8ACB-A4553BFC62E3.html). 
 
 ### Do I need to upgrade the service mesh appliances? 
 
@@ -51,6 +90,6 @@ The HCX Service Mesh can be upgraded once all paired HCX Manager systems are upd
 See [Rolling Back an Upgrade Using Snapshots](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-B34728B9-B187-48E5-AE7B-74E92D09B98B.html).  On the cloud side, open a [support ticket](https://ms.portal.azure.com/#view/Microsoft_Azure_Support/HelpAndSupportBlade/~/overview) to roll back the upgrade. 
 
 ## Next steps 
-[HCX Service Update Procedures](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-77111C61-EC4C-4C8C-8340-5828CC4D489D.html)   
+[Software Versioning, Skew and Legacy Support Policies](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-skew-policy/GUID-787FB2A1-52AF-483C-B595-CF382E728674.html)  
 
 [Updating VMware HCX](https://docs.vmware.com/en/VMware-HCX/4.5/hcx-user-guide/GUID-508A94B2-19F6-47C7-9C0D-2C89A00316B9.html)