Is it possible to do a replication from VSP to 9990V using HUR?
If you mean HUR between VSP and USP-V, then it can be performed. The USP-V limits (number of pairs, consistency groups, etc.) will be the limit of the HUR.
If you mean VSP to USP-V with a 9990V “virtualized” behind the 9990V, the technically it can be done but we have to see if the 9990V is still supported as a “virtualized” subsystem and also check on other factors. Since the 9990V storage is "virtualized" there is additional overhead to the I/O going to the storage. In any manner, the HUR journals should be in the USP-V.
The 9990V does not have the ability to execute HUR.
What about from VSP to USPV 9990V?
Thank you Jose!
We currently have the USPV 9990 in both our production and DR datacenter that we are doing HUR between them. We recently just purchase the VSP and was thinking if we can do HUR between the VSP and the USPV.
HUR between VSP and USPV can be accomplished.
It is a USPV storage and storagetek 6780 virtualized behind it. So in if i'm doing an HUR from the VSP to the USPV, the journal volume can only be from the USPV internal LDEV?
That is the best practice and I have not seen anyone attempt to use "external storage/LDEV" for HUR journals.
not sure if its considered best practice but the last we asked HDS during a uspv-> vsp migration it was suggested we use raid-5 vsp disk, not dp and not virtualized
Thank you Jose for the information.
If you aren't licensed for HUR on the USP V today, and if it is coming up for maintenance renewal you might want to look at replacing it with a HUS VM. It might be a good option from a cost perspective versus upgrading old equipment....
If you stick with the VSP to USP V replication via HUR that is fine too. I have set that configuration up before and it works great. As Jose pointed out be sure to use internal storage for the journal volumes at each site. Personally I like using internal storage for everything, but you can use external storage for the P-VOLs or S-VOLs. Like anything you will need to do some design and sizing to determine what you need to accomplish your goals.
Good luck !
Appreciate your feedback. In addition how do one determine amount of jornal volume capacity to be use for HUR?
It takes me like 5 days to replicate about 4TB storage space from USPV to USPV using HUR with 200GB jornal volume capacity at both end. Do you have idea why this may be so? Or could it be because of insufficient jornal volume capacity, MCU and RCU ports counts or speed?
First thing you need to determine are the business goals around the data you are protecting. This typically revolves around how quickly you need the data back, how you plan to use it, etc.. From there you'll be able to figure out the technical details of how much resources you need to build your solution.
Generally the journal volume configuration is based on:
1) the performance of the storage you are replicating
2) how long do you want to be able to journal data during a communication loss between the sites.
The minimum you'll need for your journals is one RAID 5 3d+1p raid group. It is important to do some analysis of the hosts you are replicating to determine the write I/O profile in IOPS and MB/s. With the workload profile you'll be able to figure out how many drives you need from a performance perspective, and then add some more drives to make your design more resilient to network outages. I strongly recommend that you work with HDS to help you on the design via their remote copy planning and design service (RCP&D). They will help you figure this out.
With regards to your question about the performance you are seeing... I'm not sure why you are getting this performance. What kind of network throughput / speed is between the two sites? What kind of raid groups are the 4 TB of replicated data on ? Are the journal volumes are on their own raid groups? What raid configuration are they? What is the performance of the workload in write IOPS of the replicated data? There are a lot of variables.... HUR is one of the more involved products when it comes to design and configuration. I really recommend that you get HDS involved, and at the very least review the HUR manuals as they provide lots of detail around design and troubleshooting.
Good luck :-)
We purchased VSPs in November last year and spent the first half of this year migrating from our USP-Vs. I used HUR/TC between the 2 as one of the methods for helping this transition.
Thanks Alex. We have a service request open with HDS; hope they will be able to figure something out and advice accordingly.
These are times when i wish i was a consultant.
VSP to USPV (9990V) HUR is possible and very easy to configure (in my opinion). Couple of Questions:
whats the distance between arrays?
HUR for DR replication or just a data migration to new array?
HDP Pool VVOL's or Basic Raid Group LDEVS?
I suggest you can consider configured VSP to includes USPV 9990 as External Storage, and then do HUR either TC between both VSP, and you can use Tier Storage Manager to migrate Volumes from USPV 9990 into VSP, does it meets your reqirement?
The Benefit of use USPV 9990 as External Storage has:
1. Whatever how OPEN-x types 9990 have, they will be seem as OPEN-V once include into VSP
2. Future you can planning to manage both storage capacity from VSP
3. Volume migrate will be easier between VSP and USPV
4. Extended your Tier 2 capacity
And the HUR between VSP and USPV 9990 is supported, but because 9990 is Oracle/SUN brand, you need to order HUR license for USPV 9990 from Oracle/SUN, and I believe that will be have some cost spend.
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