we have to recable the Half of our HUSVM Truecopy Ports. We are using HAM for VMware and Windows. What procedure would you recommend? Disable HUSVM True Copy Port, Suspend Pairs... before plug off the cables?
Thanks in advance!
Of course, path removal is possible. TC will work well.
Please don't doubt about TC reliability, TC will work well when 1 or 2 paths removed and reconnect.
But I think you need to consider MCU performance when port removed. and it can be checked by performance data.
Sorry for basic answer. configurations on sites are so different.
There are few cases.
If you just want change TC port, add new TC path and remove old path, you don't have to suspend TC in this case.
Simple steps(Need available ports on MCU and RCU)
1. Add Initiator port on MCU
2. Add RCU target on RCU
3. Connect two port with FC cable
4. Add TC path on MCU
5. Remove path on MCU(old path)
6. Remove FC cable(old path)
If you don't have available port on MCU and RCU and complex configuration, contact HDS.
TC initial copy would be need.
thank you for your reply. Our TC Config isn't that complex, we have 4 Initiator and 4 Target Ports on each HUSVM.
We don't want to Change the TC Ports on HUSVM Site, we want to Change it on the Fabric Switch Site. Support said that we should disable the TC Ports on HUSVM and pointed to our HDS Technicians. They are saying it would be better to suspend all pairs before taking any Action. So, we decided to cancel the recabling Plans.
I think your Fabric Switch between MCU and RCU need to be replace or change.
If it is correct, you need to suspend all pairs.
TC path error will occur during Fabric Switch change and It could cause MCU site performance degrade or other unexpected problems.
i appreciate your effort. We don't have to remove or replace the Switch at once. Shouldn't it work if you move one TC Port after another, without suspending the Pairs. If not, redundant cabling wouldn't make any sense in Terms of reliability.
Thanks again! That' what i want to hear
If you are still planning this exercise, then please keep in mind that in a HAM environment, if you perform a normal suspend, then the P-VOL and S-VOL are accessible from the host at the same time.
If you prefer to suspend the HAM Pairs prior to recabling, then you have to take the 'non owner' paths offline first via HDLM (or HGLM). Then you can suspend the HAM Pairs.
Once the recabling has been performed, resync the HAM Pairs manually.
When the HAM Pairs in a 'PAIR' state, bring the 'non-owner' paths back online.
Otherwise, as already mentioned. Have a look at your current workload and pick a time to repatch the fibre to a different switch port. (at both sites) One Fabric at a time. Ensuring your RCU Operations report as 'Normal' for all paths prior to repatching Fabric B.
thanks for your Input on that! But due to the fact that we are not able to manipulate such an amount of paths via HGLM without effecting our ESX Hosts, we have canceld our plans for the recabling.
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