Dell PowerEdge M420 Manual - Page 30

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Dell PowerEdge M420 Manual
Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS
2. Change the OS I/O scheduler to "deadline". To the end of the kernel line in /etc/grub.conf for
the .14.1 errata kernel, add elevator=deadline.
3. To work around a known error message with the PCIe SSDs, add the following kernel parameter: to
the end of the kernel line in /etc/grub.conf for the .14.1 errata kernel, add pci=nocrs.
More details are available at
and
https://bugzilla.redhat.com/show_bug.cgi?id=620313.
4. Configure the RAID 0 virtual disk created in Step 1, Section A.2 to be a swap device.
First note the controller ID for the PERC H710P Mini (ID 0) and the device name for the RAID 0
virtual disk (/dev/sdb) from output of the command below.
[root@nfs-dfc ~]# omreport storage controller
List of Controllers in the system
Controllers
ID
Status
Name
Slot ID
State
Firmware Version
Minimum Required Firmware Version
Driver Version
<...snip...>
[root@nfs-dfc ~]# omreport storage vdisk
List of Virtual Disks on Controller PERC H710P Mini (Embedded)
Controller PERC H710P Mini (Embedded)
ID
Status
Name
State
Partitions
Hot Spare Policy violated
Encrypted
Layout
Size
Associated Fluid Cache State
Device Name
<...snip...>
ID
Status
Name
State
https://bugzilla.kernel.org/show_bug.cgi?id=42606
: 0
: Ok
: Virtual Disk 0
: Ready
: Not Available
: Not Assigned
: No
: RAID-1
: 278.88 GB (299439751168 bytes)
: Not Applicable
: /dev/sda
: 1
: Ok
: Virtual Disk 1
: Ready
: 0
: Ok
: PERC H710P Mini
: Embedded
: Ready
: 21.1.0-0007
: Not Applicable
: 00.00.06.14-rh1
controller=0
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