Comments for Hu Yoshida http://blogs.hds.com/hu Hu Yoshida, VP and CTO of Hitachi Data Systems, provides his insight into industry issues, discusses in his own words storage best practices, and provides realistic solutions to real storage problems of current and next generation storage environments. Tue, 07 Jul 2009 23:43:29 +0000 http://wordpress.org/?v=2.7 hourly 1 Comment on How do you thin provision and who needs to know? by Hu Yoshida » Blog Archive » Overheads for Thin Provisioning http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143743 Hu Yoshida » Blog Archive » Overheads for Thin Provisioning Tue, 07 Jul 2009 22:34:06 +0000 http://blogs.hds.com/hu/?p=855#comment-143743 [...] This post was initiated by a comment from Vladimir Lavrentyev to my recent post on HDP. [...] [...] This post was initiated by a comment from Vladimir Lavrentyev to my recent post on HDP. [...]

]]> Comment on How do you thin provision and who needs to know? by Hu Yoshida http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143726 Hu Yoshida Tue, 07 Jul 2009 18:27:24 +0000 http://blogs.hds.com/hu/?p=855#comment-143726 George, the automatic leveling function which I refer to is available for HDP pools which are created with the new release of HDP v05. We are looking at providing this for pools that were created before v05, but that is not available today. Rebalancing for non v05 HDP pools is done by moving the HDP volumes into a larger pool. With v05, external storage HDP pools will also be automatically rebalanced. George, the automatic leveling function which I refer to is available for HDP pools which are created with the new release of HDP v05. We are looking at providing this for pools that were created before v05, but that is not available today. Rebalancing for non v05 HDP pools is done by moving the HDP volumes into a larger pool.
With v05, external storage HDP pools will also be automatically rebalanced.

]]> Comment on How do you thin provision and who needs to know? by Hu Yoshida http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143724 Hu Yoshida Tue, 07 Jul 2009 18:19:17 +0000 http://blogs.hds.com/hu/?p=855#comment-143724 Vladimir, there is an impact on shared memory which is configuration dependent. Your HDS representative can give you reccomendations that are specific to your implementation. I will be addressing this in a future blog since this raises some points that highlight advantages for HDP in our USP V architecture. Vladimir, there is an impact on shared memory which is configuration dependent. Your HDS representative can give you reccomendations that are specific to your implementation. I will be addressing this in a future blog since this raises some points that highlight advantages for HDP in our USP V architecture.

]]> Comment on HDP Is More Than Thin Provisioning by Michael Hay http://blogs.hds.com/hu/2009/07/hdp-is-more-than-thin-provisioning.html/comment-page-1#comment-143703 Michael Hay Tue, 07 Jul 2009 06:36:15 +0000 http://blogs.hds.com/hu/?p=904#comment-143703 Great post Hu on the many goodnesses of HDP. You bring out a lot of good points about tangential benefits of HDP such as performance, provisioning usability and generally using only what you need. All of these save our customers real money by either buying less disk, spending less time or getting more performance. Thanks mate! Great post Hu on the many goodnesses of HDP. You bring out a lot of good points about tangential benefits of HDP such as performance, provisioning usability and generally using only what you need. All of these save our customers real money by either buying less disk, spending less time or getting more performance. Thanks mate!

]]> Comment on How do you thin provision and who needs to know? by Georges Savenko http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143617 Georges Savenko Sat, 04 Jul 2009 18:13:09 +0000 http://blogs.hds.com/hu/?p=855#comment-143617 Hi We created external storage HDP pools. Will the luns installed on these external pools benefit of the same optimization as applied to internal volumes? Hi
We created external storage HDP pools. Will the luns installed on these external pools benefit of the same optimization as applied to internal volumes?

]]> Comment on How do you thin provision and who needs to know? by Georges Savenko http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143615 Georges Savenko Sat, 04 Jul 2009 18:00:03 +0000 http://blogs.hds.com/hu/?p=855#comment-143615 Hi I heard that so far the levelling function for new volumes added to an existing HDP pool is not working with the current microcode of the USPV but is supposed to work in a release to come. It means that a newly created HDP pool is actually optimized but additional storage to the pool will not. Is that true or wrong? Hi
I heard that so far the levelling function for new volumes added to an existing HDP pool is not working with the current microcode of the USPV but is supposed to work in a release to come. It means that a newly created HDP pool is actually optimized but additional storage to the pool will not. Is that true or wrong?

]]> Comment on AMS - Not Your Mother’s Modular Storage! by Mark Adams http://blogs.hds.com/hu/2009/06/ams-not-your-mother%e2%80%99s-modular-storage.html/comment-page-1#comment-143495 Mark Adams Wed, 01 Jul 2009 18:23:31 +0000 http://blogs.hds.com/hu/?p=885#comment-143495 Yes, all of the new enhancements to the AMS 2000 family are available worldwide, including India. - Mark Adams, HDS Yes, all of the new enhancements to the AMS 2000 family are available worldwide, including India.

- Mark Adams, HDS

]]> Comment on How do you thin provision and who needs to know? by vladimir lavrentyev http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143483 vladimir lavrentyev Wed, 01 Jul 2009 12:20:43 +0000 http://blogs.hds.com/hu/?p=855#comment-143483 what about limitation on shared memory for activation dynamic provision ? what about limitation on shared memory for activation dynamic provision ?

]]> Comment on AMS - Not Your Mother’s Modular Storage! by sanjeev http://blogs.hds.com/hu/2009/06/ams-not-your-mother%e2%80%99s-modular-storage.html/comment-page-1#comment-143479 sanjeev Wed, 01 Jul 2009 10:56:14 +0000 http://blogs.hds.com/hu/?p=885#comment-143479 Are you shipping them to India as well? Are you shipping them to India as well?

]]> Comment on How do you thin provision and who needs to know? by Claus Mikkelsen’s Blog » Blog Archive » Anyone Interested in a 105,000 RPM Drive? http://blogs.hds.com/hu/2009/06/how-do-you-thin-provision-and-who-needs-to-know.html/comment-page-1#comment-143426 Claus Mikkelsen’s Blog » Blog Archive » Anyone Interested in a 105,000 RPM Drive? Tue, 30 Jun 2009 05:46:13 +0000 http://blogs.hds.com/hu/?p=855#comment-143426 [...] next WRT is sequential or random. I won’t rehash all the arguments here; you can read them all in Hu’s blog, Marc Foley’s, Nigel Poulton’s (replete with video; nice touch, Nigel!), not to mention Tony [...] [...] next WRT is sequential or random. I won’t rehash all the arguments here; you can read them all in Hu’s blog, Marc Foley’s, Nigel Poulton’s (replete with video; nice touch, Nigel!), not to mention Tony [...]

]]>