https://community.hpe.com/t5/disk-enclosures/strange-issue-with-xp1024/m-p/3596134#M17097 Hi Rahul<BR /><BR /> This is nothing to do with the XP CHIP PORT.First how many ldevs are alloacated thro this CHIP port.Then How many hops you have in between the host and the XP.<BR /><BR /> Most of the time I have seen the performance problem is on the SAN side or the HBA of the host.<BR /><BR />Regards<BR />S.Arunkumar Wed, 03 Aug 2005 17:16:22 GMT S.Arunkumar 2005-08-03T17:16:22Z https://community.hpe.com/t5/disk-enclosures/strange-issue-with-xp1024/m-p/3596133#M17096 When we run read dd test on xp1024<BR /><BR />if we only use one path for the lun 230<BR />we receive real good performance throughput<BR /><BR />but if we use two paths ie c4t0d1(cl1j) and )cl2j)c5t8d1 for the same lun in dd test we receive very poor performance , service time in range of 300ms ..<BR /><BR />any insight why ? and how hpxp1024 handles cache? Wed, 03 Aug 2005 16:28:38 GMT https://community.hpe.com/t5/disk-enclosures/strange-issue-with-xp1024/m-p/3596133#M17096 Rahul Mehta_1 2005-08-03T16:28:38Z https://community.hpe.com/t5/disk-enclosures/strange-issue-with-xp1024/m-p/3596134#M17097 Hi Rahul<BR /><BR /> This is nothing to do with the XP CHIP PORT.First how many ldevs are alloacated thro this CHIP port.Then How many hops you have in between the host and the XP.<BR /><BR /> Most of the time I have seen the performance problem is on the SAN side or the HBA of the host.<BR /><BR />Regards<BR />S.Arunkumar Wed, 03 Aug 2005 17:16:22 GMT https://community.hpe.com/t5/disk-enclosures/strange-issue-with-xp1024/m-p/3596134#M17097 S.Arunkumar 2005-08-03T17:16:22Z