We have new setup of FAS2020 used only for ISCSI, we have mounted 2 ISCSI LUN's on 2 ESX servers and enabled snapshots on the volume, below are teh queries:
1. How do we need to restore from ISCSI snapshots, i know its diffrent from NFS snapshots, but do we need to mount the ISCSI LUN on to a host and retrive teh data or is there any way to restore it as we do for NFS volumes.
2. I want to share a single ISCSI LUN on both ESX hosts, if i create a LUN and dont assign it to any initiator group will i be able to share the LUN with multiple ESX hosts.
3. Can we increse teh size of the ISCSI LUN on the fly, would it have any impact on the data access for the users.
You will find that both of your questions are addressed in there (I highly advise reading this excellent document!)
As an example, on Page 8, it addresses iSCSI and FCP created luns as supporting resizing, but "Not in production"
With a follow-up mention on page 48 (Section 8.2 - Storage Growth Management) covering the steps to grow a VMFS Datastore
And then on page 15 (Section 4.2 - Storage Provisioning) it walks you through setting up VMware, igroups - and it goes on in additional depth as well.
Across the board I encourage you to check this Technical Document out, as it addresses not only the questions you're asking now, but likely ones you may wonder about going forward, as well as applying Best Practices and covering very important things (such as vmware vmdk alignment - Page 14, "Virtual Disk Starting Partition offsets" which often gets overlooked and when implemented up-front will allow you realize excellent benefits for your environment and future of your ESX deployment.
Look forward to more great questions and feedback from you Vijay!