VMware esx and vcenter update

vmware has released update ESX 6 update 1a release. I already have ESX 6 but it does show storage inconsistencies in fact I even logged a ticket with netapps for CRS error but it actually looks like problem with ESX 6 as mentioned on -

http://pubs.vmware.com/Release_Notes/en/vsphere/60/vsphere-esxi-60u1-release-notes.html#rstorageissues

But I have not found any suggested step for upgrading from 6 to 6 update 1a. As in the case of 5.5 to 6 vmware recommends clean installation than upgrade. Does the same applies with minor bug fix release like 6 update 1a or upgrading would be quicker and recommended.
If upgrade is recommended I am planning to install VUM in one server and upgrade by existing HP image using new release of ESX so it does not modify driver
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pchettriIT DirectorAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You can update ESXi 6.0 to 6.0 U1a, using esxcli.....simple, see my EE Article, but just change the files you need to download...

(no need for VUM, unless you have many Host servers!)

see my EE Article

HOW TO: Upgrade from VMware vSphere Hypervisor ESXi 5.1 to VMware vSphere Hypervisor ESXi 5.5 for FREE

(the same commands are used for 6.0 to 6.0 U1a)

http://www.experts-exchange.com/articles/19159/HOW-TO-Install-and-Configure-VMware-vSphere-Update-Manager-VUM-6-0.html

http://www.experts-exchange.com/articles/19279/HOW-TO-Update-Patch-VMware-ESXi-6-0-0-GA-to-ESXi-6-0-0b-with-VMware-Update-Manager-VUM.html

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pchettriIT DirectorAuthor Commented:
Thanks for detail instruction and various option for update. I use VCSA but I am planning to install VUM on Windows 2008 Sp2 server old decommissioned exchange server. Is it alright to have physical VUM for virtual vcenter appliance.

Further, if I take the esxcli route, is the safe to upgrade custom HP ESX 6 upgrade with vmware 6. update 1a, if HP does not have it listed? Also, do I need to update VCSA to same version of VCSA 6 can manage ESX 6. U 1a?

One more thing, I noticed in your example is the command below.

esxcli software profile update -d /vmfs/volumes/datastore1/VMware-ESX
i-5.5.0-1331820-depot.zip -p ESXi-5.5.0-1331820-standard

It looks like you have file on same datastore which you are upgrading. In my case, I have hypervisor installed on flash drive of each host and VMs on netapps ISCSI, if I am using above command, then should I be using context as
esxcli software profile update -d /vmfsdatapath of one of the netapps datastore volume where zip file is saved -p ESXi-6.iua-standard.... and I should be on the volume where I am installing new ESX1, which in my case in USB storage controller of storage adapter but not listed on Storage.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, physical VUM is fine, but I would create it on a VM!

That is an example.

The patch file can be on any VMFS datastore.

In fact we use NetApp Filers, and we have a datastore which we use to store all the patch files we need.
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pchettriIT DirectorAuthor Commented:
I was installing it on physical server 2008 as I do not want to use windows 2012 VM server which are DC and Exchange and I do not want create a new VM and use 2012 license just for installing VUM
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
that's fine, you would wait, until VMware release VUM as a virtual appliance!!!! (coming soon!)
pchettriIT DirectorAuthor Commented:
so for now you would recommend esxcli to upgrade from 6 to 6. u1a.  Move guest VM and do one host at a time. Would Vcenter 6 continue for support 6. u1a
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, most definitely get that update done!

There is probably an update for vCenter 6.0 as well, check.....
pchettriIT DirectorAuthor Commented:
do you recommend upgrade or clean installation of Vcenter 6 to 6.1a
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Upgrade should be fine, it's only a patch.
pchettriIT DirectorAuthor Commented:
Also, do you recommend vcenter upgrade before host even if it is minor bug fix release, as standard practice or I could manage upgraded ESX with Vcenter 6 only?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, I'd upgrade vCenter Server first.
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