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dingding1

2 Intern

 • 

125 Posts

2388

March 12th, 2009 19:00

what if the recoverypoint replication link is down

i have read some RecoveryPoint tech ppt. in the CRR solution, i find only in the remote side have a journal volume. so if the replication link is occasionally down for some period, where is the place for RPA to cache the write that not send to remote side? Does RPA has local storage or some place to cache the write?

Sirius31

22 Posts

March 13th, 2009 02:00

CRR solution by design will have journal(s) at both Source and Target.
In RP 3.0 and below and as you mention a WAN outtage occurs then the data is marked on the local RPA cache & repository volume. In RP 3.1, we mark the data on the local Journal as opposed to using the repository volume. When WAN recovers then the data is moved to target.

AranH1

2.2K Posts

March 13th, 2009 08:00

I would also add the when the WAN link is down for an extended period and the repository/journal fills up then the replication is paused. Once the link is available again RecoverPoint will resync all the data.

dingding1

2 Intern

 • 

125 Posts

March 14th, 2009 18:00

thanks for response. so another question, about the local journal in the CRR solution, is it only a cache or it have the same function as in a CDP solution? in another word, when the link is resumed, is the cached write in the local journal cleaned up or will it still be stored ?

SureshThirumala

60 Posts

August 17th, 2010 12:00

Hello,


Greeting for the day


When the remote site is available again, only the disk segments or blocks that were marked as having changed (dirty) are synchronized, and both transfer and replication are resumed.


Note:

It  is a bit map at newer versions. So it is an indication that a block changed and  that it needs to be sent to the other site.
Cheers!!!

Suresh Thirumalaisamy

Technical Support Engineer

Worldwide Technical Support - Virtualization Technologies Support Group

Office Hours: Tue-Sat, 21:00 to 04:00 hrs EST

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Email               : Suresh_Thirumalaisamy@emc.com

SureshThirumala

60 Posts

February 27th, 2011 17:00

Hello,

Greeting for the day.

When the link coming back to online, RPA will trigger the replication and there won't be any manual interaction required. For example, During peak hours, WAN link utilization will be increased and if you had less bandwidth, it might lead the Consistency group to "Paused" state and later on it will come back to online when the link coming back to normal.

Let me know in case of any queries. thank you.

Suresh Thirumalaisamy

Technical Support Engineer

Worldwide Technical Support - IMG RecoverPoint

Office Hours: Sun-Thur, 20:00 to 05:00 hrs EST

Phone : (US Tollfree)1-800-782-4362 || Extn 25083

Email : Suresh_Thirumalaisamy@emc.com

Please let us know what you think of the level of service provided by sending an email to my manager,

Sathkirthi, Vasuki @ (vasuki_sathkirthi@emc.com )

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RickBrunner1

117 Posts

March 8th, 2011 18:00

Aran,

     This is not true. If the wan link is down in a CRR environment, we go into marking mode. In marking mode we  use a small bit map file which allows indefinite tracking and will not fill up. Since the wan link is down and we are not replicating to the target site, the target journal will not fill up either.

Just wanted to clarify this for future community participants.

-rick

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