Hello gurus
We have an infrastructure based on a ibm blade center h with a mix of 7 blade servers (Hs22 hs23, hs23p)
Since the upgrade from vsphere 4.1 to 5.0U2 we have noticed a slowdown with a few vms
The performance graph shows an increase in ready time and i/o latency on every hosts.
see the pictures below.
We have upgraded the hosts with ibm customized iso and no problems were encountered during the upgrade.
On a similar customer's installation we had a worse performance issue when the ibm oem cd was used , we had to use vmware original iso to avoid slowdowns.
to compare the results i have "reinstalled" a host with vmware original cd. The redy time is lower now but still some i/o latency
Has anyone seen a similar issue?
Thanks
