Both implement the asymmetric failover used by the lsi now netapp raid controllers. Sun storagetek rdac multipath failover driver for linux os. Dm rdac overview the linux dmpp multipathing driver is a communityarchitected and supported driver designed to handle device multipathing. The dell powervault md3236 series dm driver packages includes patches to the dm multipath component and rdac device handler required for full.
Linux rdac multipath drivers for ibm system storage ds3000, ds4000 and ds5000 storage subsystems description. Note the failover driver for linux os rdac does not support any linux os 2. Sun storage 6180 array hardware release notes, release 6. Sun storagetek rdac multipath failover driver for linux os 5 6. Multipaths device configuration attributes red hat. Without alua, the host multipath driver is required to send data requests targeted to a specific. Refer to the netapp interoperability matrix tool for compatibility information for specific hba, multipath driver, os level, and controllerdrive tray support. Because the mpprdac driver is no longer available with santricity 11. Rdac multipath failover driver installation guide for linux os part no.
Dm rdac overview the linux dmpp multipathing driver is a community architected and supported driver designed to handle device multipathing. Device mapper multipath dmmp for the linux operating system. Make sure the kernel source tree is installed for the kernel version to be built. Look for help in our forum for printers from epson. Loop through every path in the path group, sending the same amount of io to each queuelength 0. Linux rdac multipath drivers for ibm system storage. The drivers are listed by operating system, starting with those described in this document, followed by all other options in alphabetical order. Specifies the default algorithm to use in determining what path to use for the next io operation. Mpp driver contains a separate user space utility mpputil to process tasks such as displaying multipathing topology and hot addition of devices. Send the next bunch of io down the path with the least number of outstanding io requests servicetime 0. Linux rdac multipath drivers for ibm system storage ds3000.
The mpprdac multipath driver is no longer supported for linux operating systems. Md3236 series storage arrays use dm rdac exclusively to perform multipathing. Switch to a multipath management for the san volumes presented from the ds4700ds4200 arrays. Installing the rdac driver the following procedure describes how to install the rdac driver for red hat rhel 5, red hat advanced server 4, and red hat suse. This page provides rdac driver matrices that allow you to identify the appropriate rdac driver for your ibm system storage ds3000, ds4000 or ds5000 storage subsystem based on your linux os. Determining your rdac driver version by sles os version. Check the path state for lsiengenio rdac storage controller. Use the following matrices to determine the appropriate rdac version for your linux sles.