Comments for blog.virtualtacit.com http://blog.virtualtacit.com Root Down in a 2009 World Tue, 06 Jan 2009 22:29:35 +0000 http://wordpress.org/?v=MU hourly 1 Comment on Site Recovery Manager: Minimizing Data Store Group Pigeonholes by Chuck Hollis http://blog.virtualtacit.com/2008/12/15/site-recovery-manager-minimizing-data-store-group-pigeonholes/#comment-82 Chuck Hollis Mon, 15 Dec 2008 22:46:38 +0000 http://joeckelly.wordpress.com/?p=195#comment-82 Very impressive blog, Joe! Keep up the good work! -- (king) Chuck Very impressive blog, Joe!

Keep up the good work!

– (king) Chuck

]]> Comment on Celerra SavVol-Maintaining Rolling Checkpoints by Rasmus http://blog.virtualtacit.com/2008/06/02/celerra-savvol-maintaining-rolling-checkpoints/#comment-81 Rasmus Sun, 14 Dec 2008 17:31:18 +0000 http://joeckelly.wordpress.com/2008/06/02/celerra-savvol-maintaining-rolling-checkpoints/#comment-81 Thank you very much! Thank you very much!

]]> Comment on The King coming to Durham by kcollo http://blog.virtualtacit.com/2008/11/28/the-king-coming-to-durham/#comment-76 kcollo Sat, 29 Nov 2008 03:15:41 +0000 http://joeckelly.wordpress.com/2008/11/28/the-king-coming-to-durham/#comment-76 I would love to go see him. I definitely agree that B.B King is an amazing person. To bad that I am driving up from Florida that day. I would love to go see him. I definitely agree that B.B King is an amazing person. To bad that I am driving up from Florida that day.

]]> Comment on Data De-dupe on Primary storage not so Peachy by kcollo http://blog.virtualtacit.com/2008/10/05/data-de-dupe-on-primary-storage-not-so-peachy/#comment-73 kcollo Sat, 15 Nov 2008 14:19:36 +0000 http://joeckelly.wordpress.com/2008/10/05/data-de-dupe-on-primary-storage-not-so-peachy/#comment-73 I do agree with somewhat with this post. At our implementation, all the critical VMs are ran over a 4 gig fiber connected EMC. On the development and QA side, they have been offloaded to an ISCSI (soon to be fiber) connected NetApp. ASIS is running fine on the VM ISCSI volumes and is getting 59% dedupe rate. NAS> df -sh /vol/testVol Filesystem used saved %saved /vol/testVol/ 519GB 754GB 59% Saving 754 gig so far! ASIS (NetApp dedupe) with VMWare information can be found here: http://blog.colovirt.com/2008/10/23/netapp-deduplication-a-sis-and-vmware/ We also use Data Domains that do dedupe real time, but I definitely do not see that as an option to actually run VMs off of. At least with NetApp nightly deduplication, we only get the performance hit during its run time, instead of what would be a constant one with any real time dedupe appliance. This has been taken into account and has saved us from expanding another tray of EMC drives to support non-critical VMs. Also, I hear the newer line of NetApp controllers will allow deduplication beyond the current limitation of 1 terrabyte volumes (the version we are on). I do agree with somewhat with this post. At our implementation, all the critical VMs are ran over a 4 gig fiber connected EMC. On the development and QA side, they have been offloaded to an ISCSI (soon to be fiber) connected NetApp. ASIS is running fine on the VM ISCSI volumes and is getting 59% dedupe rate.

NAS> df -sh /vol/testVol

Filesystem used saved %saved
/vol/testVol/ 519GB 754GB 59%

Saving 754 gig so far! ASIS (NetApp dedupe) with VMWare information can be found here:

http://blog.colovirt.com/2008/10/23/netapp-deduplication-a-sis-and-vmware/

We also use Data Domains that do dedupe real time, but I definitely do not see that as an option to actually run VMs off of. At least with NetApp nightly deduplication, we only get the performance hit during its run time, instead of what would be a constant one with any real time dedupe appliance. This has been taken into account and has saved us from expanding another tray of EMC drives to support non-critical VMs. Also, I hear the newer line of NetApp controllers will allow deduplication beyond the current limitation of 1 terrabyte volumes (the version we are on).

]]> Comment on TiVo for the DataCenter-EMC’s RecoverPoint by Joe Kelly http://blog.virtualtacit.com/2008/07/22/tivo-for-the-datacenter-emcs-recoverpoint/#comment-72 Joe Kelly Fri, 07 Nov 2008 12:53:19 +0000 http://joeckelly.wordpress.com/?p=54#comment-72 airswimmer, Thanks for replying, that is correct. If you have a CX3 or CX4 and flare release 26 (certain patches may apply on older CX's) or above then the splitter is built in. Of course it needs to be active and licensed but it is part of the flare. EMC is really catering to the SMB environment, they are corralling that market toward recoverpoint as they know that the clariion is dominant there. BTW this is the only array based splitter and I have heard this will extend to the symmetrix line (nothing formal though). IMO this is the way to go if you are a clariion customer, Host splitter's have their purpose but are phasing out, Fabric splitters are a mess to setup and require additional expenses (sw licenses, modules, etc). Of course, as I mentioned this implies you are a clariion shop. You can however mix array splitters and other splitters between sites and different consistency groups, so dont feel you have to use the array splitter across the board. Hope that helps.. Thanks again for commenting airswimmer,

Thanks for replying, that is correct. If you have a CX3 or CX4 and flare release 26 (certain patches may apply on older CX’s) or above then the splitter is built in. Of course it needs to be active and licensed but it is part of the flare. EMC is really catering to the SMB environment, they are corralling that market toward recoverpoint as they know that the clariion is dominant there. BTW this is the only array based splitter and I have heard this will extend to the symmetrix line (nothing formal though).

IMO this is the way to go if you are a clariion customer, Host splitter’s have their purpose but are phasing out, Fabric splitters are a mess to setup and require additional expenses (sw licenses, modules, etc). Of course, as I mentioned this implies you are a clariion shop. You can however mix array splitters and other splitters between sites and different consistency groups, so dont feel you have to use the array splitter across the board. Hope that helps..

Thanks again for commenting

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