Here is a report on several disk configurations that was done in 2009 using benchmark code bonnie++ (32-bit 2-CPU Athlon box):
which can be found in the Debian repositories.
Currently I use RAID10 with 4 SATA disks with LVM on top of the RAID on a virtual-machine server. I have not run the bonnie++ benchmarks on that system, but perhaps I will now that I see that there is some interest.
The only reason I would use RAID10 with less than 4 disks is practice (as with setup, etc), not for performance.
I am having some troubles with apt-get. I did an apt-get update and an apt-get upgrade. Some dependencies did not download, and so I had to do `apt-get -f install` to fix that. The thing is I get an error about /var/lib/dpkg/available
root@hayek:~# apt-get -f install
Reading package lists...... (3 Replies)
Hi folks,
I am self-learning as I can
I have a script that has read a file into an array.
I can read out each line in the array with the code:
for INDEX in {0..$LENGTH} ## $LENGTH was determined at the read in
do
echo "${data}"
done
What I need to do is test the first char... (2 Replies)
Hi all,
I am looking for a quick/short way in awk to check if an associative array has any content.
I know I can split() it to an indexed array and check if the 1st element is set, or cycle through it with something like for( ele in arr ), but I want to avoid that, as I am looking for a shorter... (3 Replies)
Hi everyone,
I am trying to prevent the ehci_hcd kernel module to load at boot time.
Here's what I've tried so far:
1) Add the following line to /etc/modprobe.d/blacklist.conf (as suggested here):
2) Blacklisted the module by adding the following string to
3) Tried to blacklist the module... (0 Replies)
Hi,
another little question...
"sn" is an array whose elements can vary from about 55,000 to about 150,000 elements. Each element consists of an integer between 0-255, eg: ${sn} contain the value: 103 . For a decrypt-procedure I need scroll all the elements 4 or 5 times. Here is an example of... (15 Replies)
Hi Folks,
Could anyone please assist me with the what could be the scenarios to test the file system mount/umount performance check in HPUX.
Thanks in advance,
Vaishey (5 Replies)
Hello,
P7 machine
PCI Express x8 Planar 3Gb SAS Adapter
RAID10 array(2 disks)(not AIX lvm) was configured and working, then one disk failed and IBM support replaced that. Now raid array is degraded, data is not lost. I see new disk model(same as original) serial and etc.
What I did trying... (0 Replies)
Ya, I know, who in this day and age is mirroring rootvg...?
But yes, my shop does and I need to script checking for it.
I also know I could just inverse the the logic and call the LV mirrored
if the LPs and PPs were not equal. But I want to do the math in the if test
and also know I could... (5 Replies)
Discussion started by: gtsonoma
5 Replies
LEARN ABOUT NETBSD
aac
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