EMC SYMMETRIX On AIX: MPIO Other FC SCSI Disk Drive vs EMC EMC Symmetrix FCP MPIO
I have attached some information below. I am new to Storage and the setup between the Client Host, VIOS Server, and the SAN. We have been having performance issues and will see disk latency and performance slow down. I sort of stumbled upon using the EMC provides scripts that support Fibre Channel disk arrays. I am under the impression this would promote better access to their storage. It seems like we have EMC ODM definitions yet the LUNs still show up as MPIO Other not sure if that can cause the performance issues. Looks like no one installed the ODM filesets. I am still learning so please feel to correct me where I am wrong or ask for more information if needed. Thanks in advance for everyone's help!
:# lslpp -L EMC.Symm* Fileset Level State Type Description (Uninstaller) ---------------------------------------------------------------------------- lslpp: 0504-132 Fileset EMC.Symm* not installed.
$ lsdev -Cc adapter ent0 Available Virtual I/O Ethernet Adapter (l-lan) fcs0 Available C5-T1 Virtual Fibre Channel Client Adapter fcs1 Available C6-T1 Virtual Fibre Channel Client Adapter pkcs11 Available ACF/PKCS#11 Device vsa0 Available LPAR Virtual Serial Adapter
hctunx860:# lsdev -Cc disk hdisk0 Available C5-T1-01 MPIO Other FC SCSI Disk Drive hdisk1 Available C5-T1-01 MPIO Other FC SCSI Disk Drive hdisk2 Available C5-T1-01 MPIO Other FC SCSI Disk Drive
Did we do something wrong here or should we implement the EMC define Fibre Channels?
I also see that we did not set up and values for Striping the disk on the Application Lpar? What is the impact of not having it for disk parallelism and should it be redone?
:# lsattr -E -l udbprodlv copies 1 Number of physical partitions for each logical partition True inter x Policy for allocation over multiple physical volumes True intra m Policy for allocation on physical volume True label /udb/prod Information label True lvserial_id ****************************** Volume group identifier . minor number False relocatable y Reorganization relocation policy True size 900 Number of logical partitions in logical volume True strictness y Copies allocation policy True stripe_size Stripe Size True -------NO Value Assigned stripe_width Striping Width True -------NO Value Assigned type jfs2 Type description True upperbound 1024 Number of physical volumes to allocate across True
Should Below Be TRUE?
$ lsattr -El fscsi0 | grep attach attach switch How this adapter is CONNECTED False $ lsattr -El fscsi1 | grep attach attach switch How this adapter is CONNECTED False
I think our settings for the Disk are way off please see below: