Rebooting web11 server now.
web11 is up already. Running os level updates on web10 now.
Starting hsphere upgrade on web9 now.
Rebooting web10 now. Upgrade and os updates completed on web9.
Starting hsphere upgrade on web8 now.
Web-10 is up now.
web8 upgrade completed and now running os updates.
Starting hsphere upgrade on web7 now.
We’re rebooting web8 now.
Web-8 is up already. Running os updates on web7 now.
Hsphere upgrade running on web6 now.
Upgrade completed on web6 and running os updates now on web6.
Hsphere upgrade started on web5.
Rebooting web7 now.
Web7,6,and5 upgrade completed with os updates.
Rebooting web5 for applying updates.
Hsphere upgrade on web4 running currently.
web4 upgrade completed and now running os level updates.
Hsphere upgrade on web3 started.
Web3 upgrade completed and running os level updates now.
Rebooting web4 server now for applying updates and starting hsphere upgrade on web2.
web4 is up and all services running fine on it. Issued reboot on web3 server.
web3 is up. Rebooting web2 now.
web2 is up. Running upgrade and updates on web1 server now.
Rebooting web-1 server now.
web1 server is up and all services are running fine on it.
All web servers in cluster-1 has been upgraded with os level updates. 
In case any user will face issue then please come on live chat or raise a support ticket.
H-sphere updates of Cl1-Mail11, Cl1-Mail10, Cl1-Mail9, Cl1-Mail8, Cl1-Mail7, Cl1-Mail6, Cl1-Mail4 completed.
H-sphere updates of Cl1-Mail3 and cl1-Mail1 also completed.
We’re going to start the Hsphere upgrade on the cl-1 mail5 server which is only left during the earlier upgrade process for some reasons.
During the upgrade there’ll a downtime of mail service of 10-15 min. approx.