Comments on: Kitty, Kitty…EMC is a TrueCopy Cat (Crouching Tigon) http://blogs.hds.com/christophe/2009/04/kitty-emc-truecopy-cat-tigon.html Tue, 08 Feb 2011 23:22:17 -0500 http://wordpress.org/?v=2.8.4 hourly 1 By: Christophe Bertrand » Blog Archive » Big Symm is not the cat’s meoww http://blogs.hds.com/christophe/2009/04/kitty-emc-truecopy-cat-tigon.html/comment-page-1#comment-507 Christophe Bertrand » Blog Archive » Big Symm is not the cat’s meoww Mon, 20 Apr 2009 17:52:48 +0000 http://blogs.hds.com/christophe/?p=65#comment-507 [...] you for your comment on my previous post, Barry. It’s a pleasure to see you on these pages. I have to admit I found your post both [...] [...] you for your comment on my previous post, Barry. It’s a pleasure to see you on these pages. I have to admit I found your post both [...]

]]> By: Claus Mikkelsen’s Blog » Blog Archive » Smackdown on Barry Burke, EMC http://blogs.hds.com/christophe/2009/04/kitty-emc-truecopy-cat-tigon.html/comment-page-1#comment-505 Claus Mikkelsen’s Blog » Blog Archive » Smackdown on Barry Burke, EMC Mon, 20 Apr 2009 07:15:00 +0000 http://blogs.hds.com/christophe/?p=65#comment-505 [...] technology, and Barry Burke, the self-proclaimed storage anarchist, made some comments on our own Christopher Bertrand’s blog that need some serious corrections. I’m not sure where he gets his information, but he should be [...] [...] technology, and Barry Burke, the self-proclaimed storage anarchist, made some comments on our own Christopher Bertrand’s blog that need some serious corrections. I’m not sure where he gets his information, but he should be [...]

]]> By: the storage anarchist http://blogs.hds.com/christophe/2009/04/kitty-emc-truecopy-cat-tigon.html/comment-page-1#comment-502 the storage anarchist Thu, 16 Apr 2009 21:47:35 +0000 http://blogs.hds.com/christophe/?p=65#comment-502 Symmetrix has been doing multi-site, cascaded and multi-hop replication for years- SRDF/EDF is just diskless cascaded, to reduce the cost of long distance async replication without loss of data. But all this talk about copy-cat replication - you might want to be a little more careful with your mud-slinging. I recall some legal action not that long ago that confirmed the fact that EMC was first with array-based replication technologies- both local and remote. And Hitachi COW was nearly 3 years after TimeFinde/Snaps. And USP-V *STILL* doesn't offer equivalent of SRDF/Star or /Foursite... So, who's copying who when it comes to replication? And "By the way" (as you say) - since TSM requires customers to stop their replication sessions for the duration of relocating a LUN, said customer is out of Compliance and has to notify the SEC before and after every move. SEC phone calls are never a good thing...fortunately for the Financial Services industry, V-Max Virtual LUN migration doesn't suffer this limitation. In fact, V-Max VLUN can concurrently relocate up to 128 times more LUNs than TSM (1024 vs. 8), moving them at least 2.5 times faster than TSM, and with near-zero impact on running application performance during the move whereas TSM can double or even triple response times. V-Max didn't COPY USP-V - it simply does similar things BETTER, FASTER and EASIER. I just thought I'd let you know ;-) Symmetrix has been doing multi-site, cascaded and multi-hop replication for years- SRDF/EDF is just diskless cascaded, to reduce the cost of long distance async replication without loss of data.

But all this talk about copy-cat replication – you might want to be a little more careful with your mud-slinging. I recall some legal action not that long ago that confirmed the fact that EMC was first with array-based replication technologies- both local and remote. And Hitachi COW was nearly 3 years after TimeFinde/Snaps. And USP-V *STILL* doesn’t offer equivalent of SRDF/Star or /Foursite…

So, who’s copying who when it comes to replication?

And “By the way” (as you say) – since TSM requires customers to stop their replication sessions for the duration of relocating a LUN, said customer is out of Compliance and has to notify the SEC before and after every move. SEC phone calls are never a good thing…fortunately for the Financial Services industry, V-Max Virtual LUN migration doesn’t suffer this limitation.

In fact, V-Max VLUN can concurrently relocate up to 128 times more LUNs than TSM (1024 vs. 8), moving them at least 2.5 times faster than TSM, and with near-zero impact on running application performance during the move whereas TSM can double or even triple response times.

V-Max didn’t COPY USP-V – it simply does similar things BETTER, FASTER and EASIER.

I just thought I’d let you know ;-)

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