Comments on: Dell EqualLogic SAN HeadQuarters http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/ Blogging about stuff. Wed, 14 Jul 2010 13:47:33 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Capacity Planning for Virtualization | Josh Currier http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3918 Capacity Planning for Virtualization | Josh Currier Mon, 28 Sep 2009 18:30:13 +0000 http://joshcurrier.com/?p=153#comment-3918 [...] but it was difficult to aggregate that data to see how the system as a whole was running.   As I wrote recently, SAN Headquarters gave me the performance visibility I needed at the SAN level, and between that [...] [...] but it was difficult to aggregate that data to see how the system as a whole was running.   As I wrote recently, SAN Headquarters gave me the performance visibility I needed at the SAN level, and between that [...]

]]> By: Twitted by SANPenguin http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3846 Twitted by SANPenguin Wed, 16 Sep 2009 11:35:50 +0000 http://joshcurrier.com/?p=153#comment-3846 [...] This post was Twitted by SANPenguin [...] [...] This post was Twitted by SANPenguin [...]

]]> By: Dave Bartoletti http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3839 Dave Bartoletti Fri, 11 Sep 2009 17:22:18 +0000 http://joshcurrier.com/?p=153#comment-3839 Josh - thanks for this. I'm an analyst currently writing a research profile on SAN HQ and would love to ask you a few questions about your experience with the product, if you'd care to share. Anonymously, of course :-) Dave Bartoletti, dave at tanejagroup Josh – thanks for this. I’m an analyst currently writing a research profile on SAN HQ and would love to ask you a few questions about your experience with the product, if you’d care to share. Anonymously, of course :-)

Dave Bartoletti, dave at tanejagroup

]]> By: RobVM http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3838 RobVM Fri, 11 Sep 2009 15:34:41 +0000 http://joshcurrier.com/?p=153#comment-3838 Yes, that does help, and a good demonstration of why SANHQ is needed. Thanks! Yes, that does help, and a good demonstration of why SANHQ is needed. Thanks!

]]> By: Josh http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3837 Josh Wed, 09 Sep 2009 16:35:15 +0000 http://joshcurrier.com/?p=153#comment-3837 Hi Rob, The bottlenecks were pretty basic issues but I probably wouldn't have seen them without SANHQ. We have several volumes with multiple VMs on each, which under high I/O conditions can lead to network contention and slow things down on the disk side. We had this particular issue with one higher-I/O VM and just moved it to another volume to balance the I/O load. The other issue we had was that two higher-I/O VMs on the same box were saturating the bandwidth on the HBA/Network side of the host they were on. It became clear that these two VMs should not be on the same host/iSCSI channel, so I set a DRS rule to keep them on different hosts. Problem solved. These issues were nailed down in a matter of 5 minutes with the help of SANHQ, where it would have taken me quite a bit longer to get things ironed out using only the performance graphs in vCenter. I hope this helps! Hi Rob,
The bottlenecks were pretty basic issues but I probably wouldn’t have seen them without SANHQ. We have several volumes with multiple VMs on each, which under high I/O conditions can lead to network contention and slow things down on the disk side. We had this particular issue with one higher-I/O VM and just moved it to another volume to balance the I/O load. The other issue we had was that two higher-I/O VMs on the same box were saturating the bandwidth on the HBA/Network side of the host they were on. It became clear that these two VMs should not be on the same host/iSCSI channel, so I set a DRS rule to keep them on different hosts. Problem solved.

These issues were nailed down in a matter of 5 minutes with the help of SANHQ, where it would have taken me quite a bit longer to get things ironed out using only the performance graphs in vCenter. I hope this helps!

]]> By: RobVM http://joshcurrier.com/2009/09/dell-equallogic-san-headquarters/comment-page-1/#comment-3836 RobVM Wed, 09 Sep 2009 16:20:20 +0000 http://joshcurrier.com/?p=153#comment-3836 Josh- Can you highlight what the two performance bottlenecks were that you found? We use a similar setup and have not started using SANHQ yet, although we plan to start soon. Josh-

Can you highlight what the two performance bottlenecks were that you found? We use a similar setup and have not started using SANHQ yet, although we plan to start soon.

]]>