Error creating hardware RAID on V20z

I'm trying to add a second disk to a V20z, and set up a mirror. In the LSI configuration Utility, when I select the disk which has the data on it, I hit F3 for "Keep data", and I get the message:
Can't keep data. Incompatible Partition
Press DELETE if data loss is OK or any other key to cancel
Obviously, I hit another key. From what I can tell from the documentation, this should work, but there documentation that I have isn't that great. All I've done is put the new disk in and gone into the LSI configuration utilitity; I've done nothing else to the new disk.
Is there documentation for doing this somewhere? Am I supposed to do something to the disk before I am able to set it up as part of a RAID?
Thanks!
Mike VanHorn

I'm sorry this was quite a few months back, as far as I can remember the problem stopped happening out of nothing and the template started working, so maybe something to do with updates on the servers?
Sorry I can't help you any further...
Eduardo Rojas

Similar Messages

How to destroy hardware raid on T5120

Hi,
I have problem creating hardware raid on T5120 with 4 disks. After the hardware raid 1 created, then I used the raidctl -l c1t0d0 and raidctl -l c1t2d0
the output of volume c1t0d0 contain disk 0.0.0 0.1.0, also the volume c1t2d0 contain disk 0.0.0 0.1.0 and should be 0.2.0 0.3.0
so I destroy both volume and then i issued command raidctl, the out shows controller 1 with disk 0.0.0 0.1.0 0.2.0 0.3.0, I thought output should be no raid volume found.
Anyone knows how to complete destroy the hardware.
Thanks for your help!

Give root password to your Windows admin? :)
http://dlc.sun.com/pdf/820-2179-11/820-2179-11.pdf
To Delete a Hardware RAID Volume
# raidctl
Controller: 1
Volume:c1t0d0
Disk: 0.0.0
Disk: 0.1.0
# raidctl -d c1t0d0

V440 How to create HARDWARE RAID1

How can I install HARDWARE RAID 1 (mirroring) in Sun Fire V440.
I have set many times HARDWARE RAID on x86 machines but never before on SPARC.
How should I set this ?
What I think is to install system then execute:
raidctl -c c0t0d0 c0t1d0Will this create MIRROR ? Is this correct way or should it be done some how other way ? What are regular steps to create HARDWARE RAID 1 on SPARC?
What more should I expect before installing new V440 (Solaris 10.0.2)?

Have you glanced through the documentation for that model system?
http://sunsolve.sun.com/handbook_pub/Systems/SunFireV440/SunFireV440.html
In particular, the V440 Administration guide ( doc # 816-7728 )
walks you through setting it all up.
See page 126 and page 130 of that 4MB PDF file.
Manuals are written and published so that you can reference them as needed.
The Sun System Handbook is often a speedy way to find such manuals.

Solaris 10 X86 - Hardware RAID - SMC/SVM question...

I have gotten back into Sun Solaris System Administration after a five year hiatus... My skills are a little rusty and some of the tools have changed, so here is are my questions...
I have installed Solaris 10 release 1/06 on a Dell 1850 with an attached PowrVault 220v connected to a Perc 4 Di controller. The RAID is configured via BIOS interface to my liking, Solaris is installed and see's all my partitions which I created during install.
For testing purposes, the servers internal disk is used for the OS, the PowerVault is split into 2 RAID's - one is a mirror, one is a stripe...
The question is; do I manage the RAID using Sun Management Console and the tools OR do I use SMC?
When I launch SMC and go into Enhanced Storage... I do not see any RAID's... If I select "Disks" I do see them, but when I select them, it wants to run "FDISK" on them... now this is OK since they are blank but I want to ensure I am not doing sometinhg I should not be concerned with...
If the PERC controller is controlling the RAID, what do I need SMC for?

You can use SMC for other purposes but it won't help your with RAID.
Sol 10 1/06 has raidctl which handles LSI1030 and LSI1064 RAID�enabled controllers (from raidctl(1M)).
Some of the PERCs (most?) are LSI but I don't know if they are chipsets used by your PoweEdge (I doubt it).
Generally you can break it down like this for x86:
If you are using hardware RAID with Solaris 10 x86 you have to use pre-Solaris (i.e. on the RAID controller) managment or hope that the manufacturer of the device has a Solaris managment agent/interface (good luck).
The only exception to this that I know of is the RAID that comes with V20z, V40z, X4100, X4200.
Otherwise you will want to go with SVM or VxVM and manage RAID within Solaris (software RAID).
SMC etc are only going to show you stuff if SVM is involved and VxVM has its own interface, otherwise the disks are controlled by PERC and just hanging out as far as Solaris is concerned.
Hope this helps.

Some configurations such as a software or hardware RAID do not support a recovery partition and can't be used with Find My Mac.

I'm getting the following error message when attempting to invoke "Find My Mac"
Some configurations such as a software or hardware RAID do not support a recovery partition and can't be used with Find My Mac.

You have no recovery partition. This is a normal condition if your boot volume is a software RAID, or if you modified the partition table after running Boot Camp Assistant to create a Windows partition. Otherwise, you need to reinstall OS X in order to add a recovery partition.
If you don't have a current backup, you need to back up before you do anything else.
You have several options for reinstalling.
1. If you have access to a local, unencrypted Time Machine backup volume, and if that volume has a backup of a Mac (not necessarily this one) that was running the same major version of OS X and did have a Recovery partition, then you can boot from the Time Machine volume into Recovery by holding down the option key at the startup chime. Encrypted Time Machine volumes are not bootable, nor are network backups.
2. If your Mac shipped with OS X 10.7 or later preinstalled, or if it's one of the computers that can be upgraded to use OS X Internet Recovery, you may be able to netboot from an Apple server by holding down the key combination option-R at the startup chime. Release the keys when you see a spinning globe.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
3. Use Recovery Disk Assistant (RDA) on another Mac running the same major version of OS X as yours to create a bootable USB device. Boot your Mac from the device by holding down the option key at startup.Warning: All existing data on the USB device will be erased when you use RDA.
Once you've booted into Recovery, the OS X Utilities screen will appear. Follow the prompts to reinstall OS X. You don't need to erase the boot volume, and you won't need your backup unless something goes wrong. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.
If none of the above choices is open to you, then you'll have to start over from an OS X 10.6.8 installation. There's no need to overwrite your existing boot volume; you can use an external drive. Install 10.6 from the DVD you originally used to upgrade, or that came with the machine. Run Software Update and install all available updates. Log into the App Store with the Apple ID you used to buy 10.7 or later, and download the installer. When you run it, be sure to choose the right drive to install on.

K8N Neo2-F Hardware RAID question

Hi guys,
Question for you. I have a Hitrachi 160GB SATA drive and I installed x64. After all is good and well I went out and got a second identical drive. I would now like to have these two drives Raided with the hardware raid. When I go into the RAID setup after POST, I can see both, add both, and mirror both. When I reboot, all I get is a post and it just stops after showing that box where it lists everything in the computer and what has what IRQ's. No error messages saying no boot drive, no system disk, etc. I switch it back and I can boot with the one drive. I also noticed during the RAID config, it asks me if I want to erase the drive. I always say no because I'm scared that it will erase the primary drive that I need to keep and not the new one for mirroring. Can anyone help me or confirm I'm doing this right. Thank you very much in advance.
Matt
-MSI K8N Neo2-F Socket 939 NVIDIA nForce3 Ultra ATX AMD Motherboard
-AMD 64 4200+ and fan/heatsink that came with it - NO OVERCLOCK (YET)
-2 - HITACHI Deskstar 7K250 HDS722516VLSA80 -13G0254 160GB 7200 RPM 8MB Cache Serial ATA150 Hard Drive
-CORSAIR XMS 1GB (2 x 512MB) 184-Pin DDR SDRAM Unbuffered DDR 400 (PC 3200) Dual Channel Kit System Memory
-ASPIRE ATX-AS520W BLACK ATX 520W Power Supply 115/230 V CB IEC 950/ TUV EN 60950/ UL 1950/ CSA 950
-Windows XP x64 SP1
-BFG GeForce 6800 GT AGP

You windows installation don't have the nvraid drivers loaded sou you won't be able to boot that windows installation
with the xp64 disk put in a enabled raid array .
But perhaps you can fool the system by doing this .
Leave the xp64 HD as is (just as a regular sata say at sata 1 )
Connect the new disk to the other sata controller , say sata 3 ( as they are controlled in pairs )
Set sata 3 as raid enabled and create a raid-1 array in the nvidia raidbios with just this single drive in it .
Boot windows xp64 from the normal enabled xp-HD and it should detect new hardware is added and ask for drivers .
Install the nvidia raid drivers and reboot when asked .
Then check if you have raid manager and raid drivers enabled in the windows installation .
After this point you can proceed to do the thing you first tried .(but without clearing the disk)
Delete the workaround fake raid you made with the new disk .
Shut down and move the hd-connectors again so that you have the two drives either at sata 1+2 or sata 3+4 .
Make a new array that includes the xp installation with only this disk in it , leave the other one free .
Try to boot the system .
If it boots you use nvraid manager in windows to add the second drive and let the array rebuild (sync drives )
Note that rebuilding take several hours to complete .
Look in the nvraid user guide for details .
To fully understand the nvidia raid it's wise to read this from start to finish a couple of times ,
and to have a hardcopy of it printed out.
A copy of the nvraid userguide rev.20 here :
ftp://ftp.tyan.com/manuals/m_NVRAID_Users_Guide_v20.pdf

Problem with Installation on DELL Poweredge with Hardware RAID 1

Hello Arch LInux community,
I am a newbee with good linux knowledge of working on linux but not much of systems administration. I am very much interested to install Arch Linux on my new desktop which is a Dell poweredge having hardware RAID 1(PERC .... controller). It has windows 7 OS on its first partition.
I saw on the controller's BIOS menu that there are 2 1tb hard drives with something like --:--:00 and --:--:01 labels. And they were partitioned into two logical volumes which are visible once I boot into Arch linux live CD as, /dev/sda (about 250GB, and has windows OS on it) and /dev/sdb (about 700GB).
Firstly, I am confused with the hard disk labels: even though they are logical partitions (i.e: combined by RAID 1, they are seen as /dev/sda and /dev/sdb). In the arch linux Beginner's wiki, there is some description on configuring for RAID, which included mdadm or mdadm_udev module specification. I did include these modules, and followed the installatin instructions carefully. I was trying to install on /dev/sdb, with the following partitioning:
Sector map of partitions on /dev/sdb : 1542848512 : 735.7 GiB
Disk identifier (GUID) : 967BF308-6E5E-43AD-AB2E-94EB975C3603
First usable sector = 34 Last usable sector = 1542848478
Total free space is 2023 sectors
Number    Start End    Size    Code Name
   34 2047       FREE
1    2048 2099199    1024.0 MiB EF00    EFI System
2    2099200 2103295    2.0 MiB EF02 BIOS boot partition
3    2103296 2615295    250.0 MiB 8300 Linux filesystem
4    2615296 212330495    100.0 GiB 8300 Linux filesystem
5    212330496 317188095 50.0 GiB 8300 Linux filesystem
6    317188096 1541924863 584.0 GiB 8300    Linux filesystem
   1541924864 1542848478       FREE
The instruction on the Beginner's wiki is somewhat difficult to understand for beginners. Especially I wasn't sure whether to make EFI System partition and BIOS boot partition or just EFI system partition. So I made both as per the instructions.
Is using UEFI compulsory, on UEFI based systems?
A little bit more sub-headings or division of instructions, in the Beginner's wiki, based on the usage scenarios can be very beneficial for newbees like me.
I am finally getting the following error when I select the Arch Linux from the GRUB menu. Why it can't find the device? I shall wait for your initial responses, and will give more specifics of my installation to find out any wrong step that I may have made.
[ 0.748399] megasas: INIT adapter done
ERROR: device 'UUID=40e603e9-7285-4ec8-8a06-a579358a52a0' not found. Skipping fsck
ERROR: Unable to find root device 'UUID=40e603e9-7285-4ec8-8a06-a579358a52a0' .
You are being dropped to a recovery shell
Type 'exit' to try and continue booting
Sh: can't access tty; job control turned off
[rootfs /]#

Well, you can see your RAID partitions and you're getting GRUB to load, and you are even being dropped to the recovery shell which means that the /boot partition is being found and is accessible. All vary, vary good things.
I would boot into the Arch live CD/USB again. Then check the UUID of the / Root partition. To do this I just check the log listing of /dev/disk/by-uuid
ls -l /dev/disk/by-uuid
Hopefully the UUID for the /root partition in the /boot/grub/grub.cfg is incorrect, and all you need to do is change it from 'UUID=40e603e9-7285-4ec8-8a06-a579358a52a0' to the correct UUID.
If the UUID is correct... then maybe the correct driver module is not complied into the initramfs. You could try adding that mdadm to the MODULES= list in /etc/mkinitcpio.conf then rebuild the initramfs again.
mkinitcpio -p linux
Hum..., the whole /dev/sda and /dev/sdb.... hum, You know... Maybe you need to change the line in /boot/grub/grub.cfg
set root='hd1,msdos1'
The hd1 is the equivalent to /dev/sda and the msdos1 is the equivalent of the First Partition i.e. /dev/sda1.. (note this is my disk yours may correctly have different numbers and not be a msdos partition)... owe wait... hum, you know I am fairly sure that like is really the root disk where the /boot partition is and has no relation to the / Root partition... Someone clear that up please.... It is hard for me to recall and I have my / Root parition encrypted, so It is hard for me to make heads or tails of that one right now, but that could be the problem too i.e. try changing hd1 to hd2 or hd0 or something.
Owe, and it may be faster if you just make temporary corrections to the GRUB menu by hitting the "e" key on the menu entry you want to change then hit.. I think F10 to boot the modified entry. That way you don't need to keep booting into the Live CD/USB
Last edited by hunterthomson (2012-09-20 05:52:33)

Systemd-fsck complains that my hardware raid is in use and fail init

Hi all,
I have a hardware raid of two sdd drives. It seems to be properly recongnized everywhere and I can mount it manually and use it without any problem. The issue is that when I add it to the /etc/fstab My system do not start anymore cleanly.
I get the following error( part of the journalctl messages) :
Jan 12 17:16:21 biophys02.phys.tut.fi systemd[1]: Found device /dev/md126p1.
Jan 12 17:16:21 biophys02.phys.tut.fi systemd[1]: Starting File System Check on /dev/md126p1...
Jan 12 17:16:21 biophys02.phys.tut.fi systemd-fsck[523]: /dev/md126p1 is in use. <--------------------- THIS ERROR
Jan 12 17:16:21 biophys02.phys.tut.fi systemd-fsck[523]: e2fsck: Cannot continue, aborting.<----------- THIS ERROR
Jan 12 17:16:21 biophys02.phys.tut.fi systemd-fsck[523]: fsck failed with error code 8.
Jan 12 17:16:21 biophys02.phys.tut.fi systemd-fsck[523]: Ignoring error.
Jan 12 17:16:22 biophys02.phys.tut.fi systemd[1]: Started File System Check on /dev/md126p1.
Jan 12 17:16:22 biophys02.phys.tut.fi systemd[1]: Mounting /home1...
Jan 12 17:16:22 biophys02.phys.tut.fi mount[530]: mount: /dev/md126p1 is already mounted or /home1 busy
Jan 12 17:16:22 biophys02.phys.tut.fi systemd[1]: home1.mount mount process exited, code=exited status=32
Jan 12 17:16:22 biophys02.phys.tut.fi systemd[1]: Failed to mount /home1.
Jan 12 17:16:22 biophys02.phys.tut.fi systemd[1]: Dependency failed for Local File Systems.
Does anybody undersand what is going on. Who is mounting the /dev/md126p1 previous the systemd-fsck. This is my /etc/fstab:
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/sda1
UUID=4d9f4374-fe4e-4606-8ee9-53bc410b74b9 / ext4 rw,relatime,data=ordered 0 1
#home raid 0
/dev/md126p1 /home1 ext4 rw,relatime,data=ordered 0 1
The issue is that after the error I'm droped to the emergency mode console and just pressing cantrol+D to continues boots the system and the mount point seems okay. This is the output of 'system show home1.mount':
Id=home1.mount
Names=home1.mount
Requires=systemd-journald.socket [email protected] -.mount
Wants=local-fs-pre.target
BindsTo=dev-md126p1.device
RequiredBy=local-fs.target
WantedBy=dev-md126p1.device
Conflicts=umount.target
Before=umount.target local-fs.target
After=local-fs-pre.target systemd-journald.socket dev-md126p1.device [email protected] -.mount
Description=/home1
LoadState=loaded
ActiveState=active
SubState=mounted
FragmentPath=/run/systemd/generator/home1.mount
SourcePath=/etc/fstab
InactiveExitTimestamp=Sat, 2013-01-12 17:18:27 EET
InactiveExitTimestampMonotonic=130570087
ActiveEnterTimestamp=Sat, 2013-01-12 17:18:27 EET
ActiveEnterTimestampMonotonic=130631572
ActiveExitTimestampMonotonic=0
InactiveEnterTimestamp=Sat, 2013-01-12 17:16:22 EET
InactiveEnterTimestampMonotonic=4976341
CanStart=yes
CanStop=yes
CanReload=yes
CanIsolate=no
StopWhenUnneeded=no
RefuseManualStart=no
RefuseManualStop=no
AllowIsolate=no
DefaultDependencies=no
OnFailureIsolate=no
IgnoreOnIsolate=yes
IgnoreOnSnapshot=no
DefaultControlGroup=name=systemd:/system/home1.mount
ControlGroup=cpu:/system/home1.mount name=systemd:/system/home1.mount
NeedDaemonReload=no
JobTimeoutUSec=0
ConditionTimestamp=Sat, 2013-01-12 17:18:27 EET
ConditionTimestampMonotonic=130543582
ConditionResult=yes
Where=/home1
What=/dev/md126p1
Options=rw,relatime,rw,stripe=64,data=ordered
Type=ext4
TimeoutUSec=1min 30s
ExecMount={ path=/bin/mount ; argv[]=/bin/mount /dev/md126p1 /home1 -t ext4 -o rw,relatime,data=ordered ; ignore_errors=no ; start_time=[Sat, 2013-01-12 17:18:27 EET] ; stop_time=[Sat, 2013-
ControlPID=0
DirectoryMode=0755
Result=success
UMask=0022
LimitCPU=18446744073709551615
LimitFSIZE=18446744073709551615
LimitDATA=18446744073709551615
LimitSTACK=18446744073709551615
LimitCORE=18446744073709551615
LimitRSS=18446744073709551615
LimitNOFILE=4096
LimitAS=18446744073709551615
LimitNPROC=1031306
LimitMEMLOCK=65536
LimitLOCKS=18446744073709551615
LimitSIGPENDING=1031306
LimitMSGQUEUE=819200
LimitNICE=0
LimitRTPRIO=0
LimitRTTIME=18446744073709551615
OOMScoreAdjust=0
Nice=0
IOScheduling=0
CPUSchedulingPolicy=0
CPUSchedulingPriority=0
TimerSlackNSec=50000
CPUSchedulingResetOnFork=no
NonBlocking=no
StandardInput=null
StandardOutput=journal
StandardError=inherit
TTYReset=no
TTYVHangup=no
TTYVTDisallocate=no
SyslogPriority=30
SyslogLevelPrefix=yes
SecureBits=0
CapabilityBoundingSet=18446744073709551615
MountFlags=0
PrivateTmp=no
PrivateNetwork=no
SameProcessGroup=yes
ControlGroupModify=no
ControlGroupPersistent=no
IgnoreSIGPIPE=yes
NoNewPrivileges=no
KillMode=control-group
KillSignal=15
SendSIGKILL=yes
Last edited by hseara (2013-01-13 19:31:00)

Hi Hatter, I'm a little confused about your statement not to use raid right now. I'm new to the Mac, awaiting the imminent delivery of my first Mac Pro Quad core with 1tb RAID10 setup. As far as I know, it's software raid, not the raid card (pricey!). My past understanding about raid10 on any system is that it offers you the best combination for speed and safety (backups) since the drives are a striped and mirrored, one drive dies, quick replacement and you're up and running a ton quicker than if you had gone RAID5 (20 mins writes per 5G data?)Or were you suggesting not to do raid with the raid card..?
I do plan to use an external drive for archival backups of settings, setups etc, because as we all know, if the best fool proof plans can be kicked in the knees by Murhpy.
My rig is destined to be my video editing machine so the combo of Quad core, 4G+ memory and Raid10 should make this quite the machine.. but I'm curious why you wouldn't suggest raid..
And if you could explain this one: I see in the forums a lot of people are running Bootcamp Parralels(sp) which I assume is what you use to run mulitple OS on your Mac systems so that you can run MacOS and Windblows on the same machine.. but why is everyone leaning towards Vista when thems of us on Windblows are trying to avoid it like the plague? I've already dumped Vista from two PCs and installed XP for a quicker less bloated PC. Is vista the only MSOS that will co-exist with Mac systems? Just curious..
Thanks in advance.. Good Holidays

Hardware Raid 1 with 890GXM-G54

I have just built a new system with Win 7 Pro and the 890GXM-G65. I have a SSD for the boot drive, I'm using ACHI for the SDD. Trying to get two identical HDDs setup in hardware RAID 1 for data storage. I have loaded the AMD RAID drivers from the MSI site. I setup the array from the BIOS by switching out the ACHI option to RAID. I switched back to ACHI so the system would boot off the SSD.
In Win7 Pro, I formatted the drives and indicated a mirror. Am I only getting a software non-bootable RAID solution? I would like to use a hardware RAID if at all possible.
Any suggestions would be greatly appreciated.
Thanks,
drob9876

Quote
I switched back to ACHI so the system would boot off the SSD.
When you switch back to AHCI, the controller is no longer in RAID Mode...
Quote
I would like to use a hardware RAID if at all possible.
Well, first of all, 99% of all chipset integrated RAID Suppport solution are soft-RAIDs and no true hardware RAID Solutions. In any case, your controller needs to remain in RAID mode to properly support the volume your created.

Hardware raid in T5220

Hi,
i am unable to create harware raid with solaris 10 10/09 release, then i booted through sol 10 05/09 and created raid and installed sol 10 10/09. Is there any bug in solaris 10 10/09?
Thanks

Hello,
I would suggest that you download both patches (140952-01 is obsoleted by 140952-02 while 140951-01 is still current) and review the contained Install.info file.
Usually this files contains a sample run of the update process. I'm sure that the updater detects if you try to apply the firmware for the wrong hardware revision. It asks for confirmation before the update is applied.
Did you review the Sun System Handbook page for the T5520 systemboard (there should be notes about the LSI 1068E hardware revision) ?
I don't have access to the current contract-only SSH.
Michael

Solaris Volume Manager or Hardware RAID?

Hi - before I build some new Solaris servers I'd like thoughts on the following please. I've previously built our Sun servers using SVM to mirror disks and one of the reasons is when I O/S patch the server I always split the mirrors beforehand and in the event of a failure I can just boot from the untouched mirror - this method has saved my bacon on numerous occasions. However we have just got some T4-1 servers that have hardware RAID and although I like this as it moves away from SVM / software RAID and to hardware RAID I'm now thinking that I will no longer have this "backout plan" in the event of issues with the O/S updates or otherwise however unlikely.
Can anyone please tell me if I have any other options?
Thanks - Julian.

Thanks - just going through the 300 page ZFS admin guide now. I want to ditch SVM as it's clunky and not very friendly whenever we have a disk failure or need to O/S patch as mentioned. One thing I have just read from the ZFS admin guide is that:
"As described in “ZFS Pooled Storage” on page 51, ZFS eliminates the need for a separate volume
manager. ZFS operates on raw devices, so it is possible to create a storage pool comprised of
logical volumes, either software or hardware. This configuration is not recommended, as ZFS
works best when it uses raw physical devices. Using logical volumes might sacrifice
performance, reliability, or both, and should be avoided."
So looks like I need to destroy my hardware RAID as well and just let ZFS manage it all. I'll try that, amend my JET template and kick of an install and see what it looks like.
Thanks again - Julian.

Partitoning a Hardware Raid

OK, I have already searched the net to no avail, im hoping someone here will be able to help me.
I currently have an external 300gb HD with 2 partitions, one is a bootable backup and the other is storage. I have recently realized that if this drive were to fail I would lose a ton of important data. I therefore have decided to create a raid setup. I am considering purchasing a Buffalo DriveStation Duo with 2 500GB drives in it. I would set this up in a RAID 1 array so I will have 500gb of usable space with a constant mirror image backup. My question is, can I partion the RAID into 2 partitions (as I have now with my 300 gb drive) one for a bootable backup and one for storage and still maintain the mirroring. In essence I want to have 1 drive with 2 partitions on it, and have the drive still be mirrored to the second drive.
First-Is this possible?
Second-Will I still be able to boot from the boot partition?
Three-If so, can having more than one partition on a raid create problems, such as increased disk failure, slower speeds, etc?
Thanks in advance to anyone that can help me with this!

Well, the reason that I wanted to do this raid array is because I store allot of files on my external drive that are not on my internal drive, therefore if my external drive were to fail my files would be gone for good. I also keep a bootable backup that I constantly recreate on a seperate partition of the external drive. I thought if I create the RAID then I would avoid loss of data in the event of a disk failure.
As far as using my current drive, I was going to upgrade the amount of storage that I had and set up the raid system at the same time, If I buy 2 500gb drives I will have 500gb of usable space instead of 300gb.
I am however unfamilier with OS X RAID software, is this the same as a "software raid" as I have heard that a software raid is much slower than a hardware raid because it uses you computers processer to mirror data rather than using a raid card in the enclosure.
As for cost, I can buy this drive station duo (does raid 0 and 1, has firewire 800, 400, and usb, and an internal hardware raid) with 2 preinstalled 500gb sata drives for $300. I thought that this was a pretty good price for what I am getting but I am very uneducated in all of this and could be very wrong.
If, like you said earlier, I can partiton the drives and then create a raid (with the harware raid and not need a "dual raid card" or whatever) I would do that. Are you saying that I would only be able to have the 2 raids required if I use the OS X software.
I guess my questions boil down to this
1. Is the OS X raid software considered a "software raid" and is it slower than a hardware raid? If so, by how much?
2. If its not any slower, What materials would you recomend to build this considereing I want 500gb of usable space rather than the old 300gb?
Also, if its not slower where is this software in the OS, Disk Utility? And how would I use it?
3. If this software way is slower then I would still want to use the hardware method that I have been pursuing, can I still make the partitions in advance and then make 2 raids or will this not work with the hardware method?

ORA-27504: IPC error creating OSD context

Hi
We have a Linux based ORACLE rac server (version-10.2.0.4.0). Suddenly dbs are went down and while we are trying to up the dbs it will shows the following error
ORA-27504: IPC error creating OSD context
ORA-27300: OS system dependent operation:check if cable failed with status: 0
ORA-27301: OS failure message: Error 0
ORA-27302: failure occurred at: skgxpcini1
ORA-27303: additional information: requested interface eth1 interface not runnin
g set disableinterface_checking = TRUE to disable this check for single instan
ce cluster. Check output from ifcon
Any one have idea about this?
Thanks
Anbu

Use this forum to report broken links or general feedback about Oracle documentation. This forum is not monitored by Oracle support or product teams and so Oracle product and technology related questions will not be answered.
It seems you are not in the right forum. Despite of this because of the error stack you have a - possibly hardware related - connection problem between the nodes of the cluster. Pay special attention to ORA-27303, I think this message gives you valuable hints. And check the interconnect on hardware level.
Werner

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the same question I ask for software raid ? this question is for raid 0,1,5,6,ect.
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h.david

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Enterprise controllers will read the metadata of the array, as it's stored on the disks, and recognize the configuration. Then you and you can choose to 'mount' it or create
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For software raid, the only experience I have is that Windows can recognize a set of drives when they are configured as Dynamic Disks.
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