- Notes, cautions, and warnings
- About the Shared PERC 8 card
- Shared PERC
8 card features
- Physical disk power management
- Consistency Checks
- Virtual disk initialization
- Physical disk roaming
- FastPath
- Virtual disk migration
- Virtual disk cache policies
- Physical disk write cache policy
- Fault tolerance
- Multipath support
- Deploying the Shared PERC 8 card
- Driver installation
- Downloading drivers and firmware for Shared PERC 8 from the Dell support website for all operating systems
- Downloading drivers from the Dell Systems Service and Diagnostic Tools media for Windows
- Installing or updating Windows drivers for Shared PERC 8
- Installing or updating Linux drivers for Shared PERC 8
- Installing or updating VMware drivers for Shared PERC 8
- Multipath and clustering setup
- Management applications for Shared PERC 8 card
- Troubleshooting
- Performance variations between write-back and write-through cache modes
- Shared PERC 8 card boots into safe mode
- Degraded state of virtual disks
- General issues
- Physical disk
issues
- Incorrect Number of Virtual Disks Displayed In Windows Disk Manager
- Physical Disk In Failed State
- Unable to rebuild a fault tolerant virtual disk
- Fatal Error Or Data Corruption Reported
- Physical Disk Displayed As Blocked By Management Application
- Multiple Disks Become Inaccessible
- Rebuilding A Failed Physical Disk
- Virtual Disk Fails During Rebuild Using A Global Hot Spare
- Virtual Disk Fails During Rebuild Using A Dedicated Hot Spare
- Physical disk takes a long time to rebuild
- Controller cache issues
- SMART Errors
- Auto Replacement Member Errors
- Hard-Drive Indicator Patterns
- Getting help
Dell Shared PowerEdge RAID Controller (PERC) 8 For Dell PowerEdge VRTX Systems User’s Guide
Installing multipath in Linux
In Linux, multipathing is supported using the device-mapper multipath module.
The device-mapper module should be installed if not part of the default install: device-mapper-multipath-<version>(RHEL) and device-mapper-<version>(SLES). This can be installed using any of the update manager tools like yum or yast.The following are sample multipath.conf files that can be used for Linux multipath configuration. The files may require modification based on your particular configuration requirements. Refer to the documentation provide by the Linux distribution vendor for further guidance on multipath configuration.
RHEL 6.5
defaults {
verbosity 2
polling_interval 10
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
features "0"
fast_io_fail_tmo 5
}
}
RHEL 7.1
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
blacklist {
wwid "<WWID of OS VD>"
}
SLES 11
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
SLES 12
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
blacklist {
wwid "<WWID of OS VD>"
}
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