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Full Discussion: Hardware RAID
Operating Systems Solaris Hardware RAID Post 302157175 by xramm on Thursday 10th of January 2008 09:42:05 AM
Old 01-10-2008
Lightbulb

Quote:
Originally Posted by jess_t03
I don't understood why on SPARC-Platforms have not present RAID-Controller ? Sorry for my bad english, but it's crazy always setup software RAID !!! I whanna Hardware RAID and when i can find solution ?
Some experts say ; HW RAID is better in general reliability than SW RAID after a reboot sometime SW RAID machines had problem in spite of that RAID 1 mirror is most reliable in category as its Performance is best during failure. Some notes about performance:

Striping generally has the best performance, but it offers no data
protection. For write-intensive applications, RAID 1 performs better
than RAID 5.
l RAID-1 and RAID-5 volumes both increase data availability.
Mirroring improves random read performance.
l RAID-5 volumes have a lower hardware cost than RAID-1 volumes,
while RAID-0 volumes have no additional hardware cost.
 

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IIR(4)							   BSD Kernel Interfaces Manual 						    IIR(4)

NAME
iir -- Intel Integrated RAID controller and ICP Vortex driver SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device pci device scbus device iir Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): iir_load="YES" DESCRIPTION
The iir driver claims to interface with the Intel integrated RAID controller cards, and all versions of the ICP Vortex controllers (including FC). HARDWARE
Controllers supported by the iir driver include: o Intel RAID Controller SRCMR o Intel Server RAID Controller U3-l (SRCU31a) o Intel Server RAID Controller U3-1L (SRCU31La) o Intel Server RAID Controller U3-2 (SRCU32) o All past and future releases of Intel and ICP RAID Controllers. o Intel RAID Controller SRCU21 (discontinued) o Intel RAID Controller SRCU31 (older revision, not compatible) o Intel RAID Controller SRCU31L (older revision, not compatible) The SRCU31 and SRCU31L can be updated via a firmware update available from Intel. SEE ALSO
cam(4), pass(4), xpt(4), camcontrol(8) AUTHORS
The iir driver is supported and maintained by Achim Leubner <Achim_Leubner@adaptec.com>. This manual page was written by Tom Rhodes <trhodes@FreeBSD.org> and is based on information supplied by the driver authors and the website of Mike Smith <msmith@FreeBSD.org>. BSD
August 8, 2004 BSD
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