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Operating Systems Linux Red Hat Separate HDD test using RAID controller Post 302945560 by Dbugy on Sunday 31st of May 2015 07:44:36 AM
Old 05-31-2015
Separate HDD test using RAID controller

Hello,
I am using Red Hat 2.6.23.1 with RAID 6 controller (card).
(When I use "cat /proc/partitions" I do not see the separate HDDs in the RAID, I see one drive for the RAID itself, as it is considered 1 large drive.)
I used a "dd" check to test my RAID drive speed and found it was a bit slow, so I want to figure out which HDD in the RAID is problematic.

I was wondering I there was a way within Red Hat to test the HDDs separately without destroying the RAID build.
Otherwise is there a 3rd party tool that can help me?

Thanks in advance for any help possible.

P.S.
This is my first post so I don't know exactly what information is needed, please tell me if you need more information in order to help me (and as I am new to Red Hat I would also appreciate explanations on how to get it).
 

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MFI(4)							   BSD Kernel Interfaces Manual 						    MFI(4)

NAME
mfi -- LSI Logic & Dell MegaRAID SAS RAID controller SYNOPSIS
mfi* at pci? dev ? function ? DESCRIPTION
The mfi driver provides support for the MegaRAID SAS family of RAID controllers, including: - Dell PERC 5/e, PERC 5/i, PERC 6/e, PERC 6/i - Intel RAID Controller SRCSAS18E, SRCSAS144E - LSI Logic MegaRAID SAS 8208ELP, MegaRAID SAS 8208XLP, MegaRAID SAS 8300XLP, MegaRAID SAS 8308ELP, MegaRAID SAS 8344ELP, MegaRAID SAS 8408E, MegaRAID SAS 8480E, MegaRAID SAS 8708ELP, MegaRAID SAS 8888ELP, MegaRAID SAS 8880EM2, MegaRAID SAS 9260-8i - IBM ServeRAID M1015, ServeRAID M5014 These controllers support RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50 and RAID 60 using either SAS or SATA II drives. Although the controllers are actual RAID controllers, the driver makes them look just like SCSI controllers. All RAID configuration is done through the controllers' BIOSes. mfi supports monitoring of the logical disks in the controller through the bioctl(8) and envstat(8) commands. EVENTS
The mfi driver is able to send events to powerd(8) if a logical drive in the controller is not online. The state-changed event will be sent to the /etc/powerd/scripts/sensor_drive script when such condition happens. SEE ALSO
intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8) HISTORY
The mfi driver first appeared in NetBSD 4.0. BSD
March 22, 2012 BSD
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