09-11-2008
By using SVM (or zfs) to create a RAID volume you will be using software RAID, so no need for fancy hardware. If you use hardware raid then you don't need SVM or anything like it, the OS just sees it as "a disk" and shouldn't care what kind of mirroring or data protection is going on.
By definition you will be using extra space if you use RAID5, but that is the price you pay for having your data protected.
10 More Discussions You Might Find Interesting
1. Solaris
I have this setup, i can only find docs to unmirror a raid 1 set, how do you get rid of a raid 5 set? the same way? metadetach and metaclear?
d8: RAID
State: Okay
Interlace: 32 blocks
Size: 142245693 blocks (67 GB)
Original device:
Size: 142247872 blocks (67 GB)
... (2 Replies)
Discussion started by: BG_JrAdmin
2 Replies
2. SCO
recently we have purchased hp proliant ml350 g5 server and configured raid 5 with hp smartarray p200i sas controller.but i could not found any sas raid controller hp smartarry p200i driver for sco unix 5.0.7 :(.i searched on hp support site,but no use.any one can help. (3 Replies)
Discussion started by: prakrithi
3 Replies
3. Solaris
Hello experts..
How can i grow Raid 5 volume in SVM?
Thanks in advance.. (2 Replies)
Discussion started by: younus_syed
2 Replies
4. Red Hat
I am planning on building a fedora box with raid controller (database server).
Is anybody done that ? also what kind of software do you need to backup and recover data. (1 Reply)
Discussion started by: amir07
1 Replies
5. Hardware
Hi,
We have a Sunfire 4150 with On-Board Internal Raid Controller connected to 4 X 146 GB SAS disks.
This also has an External Raid Controller (Storagetek Eight-Port, External HBA
Model SG-XPCIESAS-R-EXT-Z) connected to a JBOD array ( Storagetek XTA2530 ) which has 5 X 300 GB Hard disk.
... (1 Reply)
Discussion started by: ranjansukumar
1 Replies
6. Solaris
Hi All!
I'm running Solaris 10 and SPARC and using
Let me give a bit of background before asking my question:
I have created a RAID 0 (stripe) on 2 disks, I have the OS running on a third disk and I have now performed a ufsdump / ufsrestore from my third disk to the RAID 0 disks... (7 Replies)
Discussion started by: Keepcase
7 Replies
7. AIX
Hello,
I have a scsi pci x raid controller card on which I had created a disk array of 3 disks
when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk )
suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI... (0 Replies)
Discussion started by: filosophizer
0 Replies
8. AIX
Hello folks,
Could someone tell me why I unable to create pdisks for a RAID Array
# lscfg | grep scsi
+ sisscsia0 U787A.001.DPM0707-P1 PCI-X Dual Channel Ultra320 SCSI Adapter
+ scsi0 U787A.001.DPM0707-P1-T10 PCI-X Dual Channel Ultra320 SCSI Adapter... (12 Replies)
Discussion started by: filosophizer
12 Replies
9. Red Hat
Hello,
I want to delete a RAID configuration an old server has.
Since i haven't the chance to work with the specific raid controller in the past can you please help me how to perform the configuraiton?
I downloaded IBM ServeRAID Support CD but i wasn't able to configure the video card so i... (0 Replies)
Discussion started by: @dagio
0 Replies
10. Red Hat
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,... (7 Replies)
Discussion started by: Dbugy
7 Replies
LEARN ABOUT LINUX
ataraid
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