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79 Posts
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2451
I/O Timeout Value on UNIX Servers
VPLEX Users:
Do you know if there is a value for I/O Timeout that is recommended for UNIX/Linux Hosts connected to VPLEX LUNs?
If yes, can you please let me know what the value is. We have servers with both Native Multipathing as well as servers with PowerPath in our environment. Any input from your end would be most appreciated.
Regards,
-KGD.
RickBrunner1
117 Posts
1
November 8th, 2012 12:00
Kennedy,
There are two main references for this sort of configuration information.
1) The VPLEX Procedure Generator (mainly for array and other configuration and provisioning procedures)
2) EMC Host connectivity guides which are not specific to VPLEX but will have information on all EMC arrays as well as VPLEX. A few direct links listed below, but you can find others by simply searching for "Host Connectivity Guide" on EMC Powerlink.
Host Connectivity Guide for VMWare ESX Server
Host Connectivity Guide for IBM AIX
EMC Host Connectivity Guide for Oracle Solaris
EMC Host Connectivity Guide for HP-UX
EMC Host Connectivity Guide for Linux
In addition you will want to validate you meet the VPLEX Host support requirements listed in the VPLEX ESSM
which from a host perspective is very relaxed in terms of HOST HBA requirements.
excerpt below based on the Nov ESSM linked above.
Hosts Servers/Adapters •
All Fibre Channel HBAs from Emulex and QLogic (2 Gb/s or greater) and Brocade (8 Gb/s or greater). All Cisco CNAs (10 Gb/s or greater) a.
Any EMC or vendor-supplied OS-approved driver/firmware/BIOS is allowed. EMC recommends using latest E-Lab Navigator listed OSapproved
driver/firmware/BIOS versions listed for VMAX or VNX. Adapter must support link speed compatible with selected switch (fabric).
All host systems are supported where the vendor allows the host/OS/adapters combination.
• VPLEX does not support host direct connections and requires HBAs to be connected to supported fabric switches.
-rick
Kennedy_Doss
79 Posts
0
November 14th, 2012 07:00
Thanks for your inputs, Rick. I really appreciate your efforts in taking the time to give me the detailed information. That does help me a lot. -KGD
Kennedy_Doss
79 Posts
0
November 14th, 2012 08:00
I also got another similar response from the PowerPath Team in EMC and here is the link:
https://community.emc.com/message/688134#688134
I am sure this is as useful as the infor that Rick Brunner has shared with us above.
-KGD.