iSCSI LUNs on a Synology changed - how to re-connect?

[kaguser]

Hi,

we have a Synology RackStation where we host two iSCSI LUNs on it. These LUNS are mounted as Datastores, storing multiple VMs on it.

In the datastore details I see a path like: /vmfs/volumes/5283b99a-65.... for each LUN.

I now need to replace the Synology unit. I can move all harddrives from one to another Synology with out problem, the unit boots and I can reach it under the same IP. Also the LUNs are up. But, probably because the MAC address of the Synology changed, I can not access the Datastores andmore. In vSphere I see them marked as "dead". When I swap back to Synology unit, all is back to normal.

How can I do the change from one Synology to another? Is there a way to specify a new path to the LUNs and just reconnect them with its "old" content?

Thanks in advance,

björn

[bspagna89 · Accepted solution]

Hi,

On the new Synology are you presenting volumes to VMware? If nothing has changed (discovery IP/access rights) than you may need to resign the datastores :

Take a look at these two articles. They explain how a datastore is formed and poetentially why you cannot connect back to them when you swap units.

vSphere Documentation Center

vSphere Documentation Center

[kaguser]

thank you