08-30-2010
| Software RAID | Hardware RAID |
Pros | Works without extra hardware; works across different types of hardware; works across network hardware devices (eg. SAN); works across differently sized disks using partitions | Usually faster; won't tax the CPU on high load |
Cons | Checksum calculation is done on the CPU; (probably) won't work on different OS'; no booting except from RAID1 | a vendor-switch is impossible |
This is by no means a complete table, but it's a starting point. For more information read up on
RAID
9 More Discussions You Might Find Interesting
1. AIX
Hey Alll
Thanks for the help u give me yesterday,i need a help again from u all guys i have RS 6000 server with AIX 4.3.3 OS and with external storage (multipack) with 12 Hard disk drive which will be connected to RS 6000 scsi controller ,i dont have any raid card. now i have to... (0 Replies)
Discussion started by: solaris8in
0 Replies
2. SuSE
Hello Lunix people,
I am looking for Raid software or solution besides Veritas. Veritas has some great software but are way too costly. Does anyone know of good raid software that but NOT Veritas. I need the funcations but not the cost. (7 Replies)
Discussion started by: xtmeisel
7 Replies
3. UNIX for Advanced & Expert Users
Hi all,
I m just trying using software RAID in RHEL 4, without problem , then i wanna simulate if disk 1 is fail (thereis an bootloader), i plug off my 1st disk. My problems is the second disk cannot boot? just stuck in grub, the computer is hang. Sorry for poor concept in RAID? I use a RAID 1.... (0 Replies)
Discussion started by: blesets
0 Replies
4. HP-UX
Hi!
A couple of months ago a disk failed in our JBOD cabinett and I have finally got a new disk to replace it with. It was a RAID 0 so we have to create and configure the whole thing again. First we thought of RAID 1+0 but it seems you can't do this with LVM. If you read my last thread, you can... (0 Replies)
Discussion started by: hoff
0 Replies
5. Linux
Hey,
I have worked with Linux for some time, but have not gotten into the specifics of hard drive tuning or software RAID. This is about to change. I have a Dell PowerEdge T105 at home and I am purchasing the following:
1GBx4 DDR2 ECC PC6400 RAM
Rosewill RSV-5 E-Sata 5 bay disk enclosure... (6 Replies)
Discussion started by: mark54g
6 Replies
6. Filesystems, Disks and Memory
Hello,
My company has inherited a Centos based machine that has 7 hard drives and a software based raid system. Supposedly one of the drives has failed. I need to replace the hardrive.
How can I about telling which hard drive needs replacing? I have looked in the logs and there clearly is a... (5 Replies)
Discussion started by: mojoman
5 Replies
7. UNIX for Dummies Questions & Answers
Hi
Can someone tell me what are the differences between software and hardware raid ?
thx for help. (2 Replies)
Discussion started by: presul
2 Replies
8. Solaris
Server Model: T5120 with 146G x4 disks.
OS: Solaris 10 - installed on c1t0d0.
Plan to use software raid (veritas volume mgr) on c1t2d0 disk.
After format and label the disk, still not able to detect using vxdiskadm.
Question:
Should I remove the hardware raid on c1t2d0 first?
My... (4 Replies)
Discussion started by: KhawHL
4 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
AAC(4) BSD Kernel Interfaces Manual AAC(4)
NAME
aac -- Adaptec AdvancedRAID Controller driver
SYNOPSIS
aac* at pci? dev ? function ?
ld* at aac? unit ?
DESCRIPTION
The aac driver provides support for the Adaptec AAC family of SCSI and SATA RAID controllers. These controllers support RAID 0, 1, 5, 10,
and volume sets. They have four channels in the add-in version or 1-2 channels in the motherboard integrated version, and are most often
found rebadged by Dell, Hewlett-Packard or IBM. Supported controllers include:
o Adaptec AAC-364
o Adaptec SCSI RAID 2120S
o Adaptec SCSI RAID 2200S
o Adaptec SATA RAID 2410SA
o Adaptec SATA RAID 3405
o Adaptec SCSI RAID 5400S
o Dell PERC 2/Si
o Dell PERC 2/QC
o Dell PERC 3/Di
o Dell PERC 3/Si
o Dell PERC 320/DC
o Dell CERC SATA RAID 1.5/6ch
o HP NetRAID 4M
o HP ML110 G2 (Adaptec SATA RAID 2610SA)
o IBM ServeRAID 8k
Access to RAID containers is available via the ld device driver. Individual drives cannot be accessed unless they are part of a container or
volume set, and non-fixed disks cannot be accessed. Containers can be configured by using the on-board BIOS utility of the card.
DIAGNOSTICS
The adapter can send status and alert messages asynchronously to the driver. These messages are printed on the system console.
SEE ALSO
intro(4), ld(4)
HISTORY
The aac driver first appeared in NetBSD 1.6, and was based on the FreeBSD driver of the same name.
BUGS
This driver is not compatible with controllers that have version 1.x firmware. The firmware version is the same as the kernel version
printed in the BIOS POST and driver attach messages.
BSD
February 19, 2011 BSD