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Full Discussion: Hardware raid patching
Operating Systems Solaris Hardware raid patching Post 302931174 by jegaraman on Sunday 11th of January 2015 12:41:44 PM
Old 01-11-2015
Yes it is an LSI integrated RAID controller....
How to check whether the root file system is under mirror....
Rgds
Rj

---------- Post updated at 09:41 AM ---------- Previous update was at 08:58 AM ----------

Dear Hicks ,

Thanks for the detailed information.

And also i came to know these servers are not having redundancy.Since because they have implemented Hardware RAID here .So customer is feeling that there is a single point of failure in case of rollback.Taking image backup also they are saying it will take downtime and longer duration.

Some of my Queries are as below.
1. In order to do the Hardware RAID servers for patching.
what are the pre checks that we need to do.
2. After installing the patch , what and all we need to check.

Thanks for you help in advance.....
rgds
rj
 
Test Your Knowledge in Computers #670
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Fourteen channels are designated in the 2.4 GHz range, spaced 5 MHz apart from each other except for a 12 MHz space before channel 14.
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ATARAID(4)						   BSD Kernel Interfaces Manual 						ATARAID(4)

NAME
ataraid -- ATA software RAID support SYNOPSIS
device ata device ataraid DESCRIPTION
The ataraid driver provides support for so-called software RAID (sometimes referred to as fake RAID or pseudo RAID). When a controller that supports software RAID is instructed to create a RAID array, its BIOS writes data structures in a specific metadata format to the disks. These data structures are picked up by the ataraid driver, so that FreeBSD can work with the array. The ataraid driver has to understand the specific metadata format of a controller BIOS in order to support its RAID capabilities. Read-only support for a metadata format means that FreeBSD can use the given RAID array for normal read/write operations. Creation and rebuild of such arrays has to be done from the controller BIOS. Read and write support for a metadata format means that FreeBSD can use the given RAID array for normal read/write operations. Additionally, the atacontrol(8) utility can be used to create, rebuild, update and fail such RAID arrays. The ataraid driver can read the following metadata formats: o Adaptec HostRAID o Highpoint V2 RocketRAID o Highpoint V3 RocketRAID o Intel MatrixRAID o Integrated Technology Express (ITE) o JMicron o LSI Logic V2 MegaRAID o LSI Logic V3 MegaRAID o NVIDIA MediaShield o Promise FastTrak o Silicon Image Medley o Silicon Integrated Systems (SiS) o VIA Tech V-RAID o FreeBSD PseudoRAID The ataraid driver can write the following metadata formats: o Highpoint V2 RocketRAID o Intel MatrixRAID o JMicron o Promise FastTrak o Silicon Integrated Systems (SiS) o VIA Tech V-RAID o FreeBSD PseudoRAID It is also possible to use software RAID on controllers that do not have special software RAID capabilities. See atacontrol(8) for details. FILES
/dev/ar* ATA RAID device nodes SEE ALSO
ata(4), atacontrol(8) CAVEATS
RAID5 is not supported at this time. Code exists, but it neither uses nor maintains parity information. AUTHORS
The ataraid driver was written by Soren Schmidt <sos@FreeBSD.org>. This manual page was written by Christian Brueffer <brueffer@FreeBSD.org>. BSD
February 17, 2006 BSD

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