Controller failure / e-jbod

What happens to the drives in enhanced JBOD mode if the controller they're attached to fails and must be replaced?
Assuming that no damage is done to drives, what does one do to get the drives recognized again after the new controller is put into place?
thanks for any information here.

In addition to the other answers:
The firmware on the 'new' controller is often lower then on the broken one. You need to upgrade this. Also all info from the broken controller has to be filled in , including IP. This works best with a direct ethernet cable.
If you have bigger disks then the controller firmware supports, you are confronted with an xraid with all the disks red leds on. (as I saw last saturday;-)
After a firmware upgrade you better do a full power off, including batteries off, otherwise the ethernet connection to the xraid can be lost.
Also, if a FC switch is involved, you have to adjust the zoning.
Regards
Donald

Similar Messages

Video Controller Failure.

After a couple of months of kernel panics, freezing, etc., a Hardware Test finally produced the sad conclusion that the NVIDIA 8600M GT video controller in my MBP had failed. This is the well documented fault that has been occurring since 2007/2008. My MBP is now just a month short of its fifth birthday so I do not believe I am going to get a free ride. I have contacted my local Apple Reseller in the UK and they advised me a replacement logic board would cost around UK500 pounds. The gentleman also added that this is the last year that parts for this model will available due to its age. I was thinking of a replacement this year as my daughter has been pining for mine for some time.
Here is the question: does anyone know the cost of a replacement logic board in the US? I shall be there later this year.
Anyone's thoughts of whether this repair is worthwhile or not would be appreciated. I feel the laptop, given a trouble free run, is good speed and software wise for some time to come. I have just fitted a 1TB hard drive and upgraded to 4MB RAM.
An unfortunate year for me, I have just had to replace the HD in the family iMac 27 and now this. The first hardware failures on my Macs since I started using them 1986. A good run for my money I feel!!
Advice please.
TY

Too late to help you unfortunately but under European law, Apple must replace faulty hardware components until 6 years after purchase.

Possible Drive Controller Failure? Would like more informed opinions please

I normally work on PC's but had a client approach me to work on a MacBook. It's a Core 2 Duo Intel hardware etc..He complained of dead battery, DVD stuck in drive, and no boot. The unit will power on with the AC adaptor plugged in and will boot to a Mac OSX install disk. Initially when I got it I booted to a Tiger install disk and ran disk utility. Found a 160GB drive that had 2 volumes on it. 1 was mountable, the other not. Tried running repair and verify on both the drive and the volume. Error I got referenced an underlying failure. I figured drive was dead or on the way. Booted into single user mode and played with some Unix commands. Still could not mount drive. So..I popped the 160GB out and popped in a 60GB known good HDD. I formatted the 60GB on my PC with NTFS. Booted to Tiger disk..Not recognized. Hmm...Used MacDrive 8 to format disk to HFS+ on my PC and popper it back in. Still doesd not recognize. Drive Utility does not even see the drive. Nor does System Profiler. At this point I just would like to know if I am looking at a failed drive controller (it is STA) or what. The DVD is not hanging off the SATA controller. It is ATA and I am not sure if the board has a dedicated chip for ATA or if it hanhgs off the SouthBridge. Any help or insight would be greatly appreciated...

Just an idea: If you can group - on the screen - the components that "come and go", then you might be able to position them in an individual panel, and make that alternatively visible and invisible. That would eliminate doing a whole lot of monkeying with component locations at runtime.

NF980-G64 SATA controller failure ?

Hello all, been a while. I have seemingly had a failure of the SATA controller on my board. I came home to find my system locked up and upon reboot, not a single SATA device was detected. This includes 2 SATA 2 HDD and 2 SATA DVD drives. I have tried everything I know to do... exchange/move cables, switched to AHCI, cleared BIOS, Updated BIOS, all drives power up but in the BIOS I see "not detected". Any one have any similar experience? Any suggestions???? Got an ASUS in the mail but BF3 came out today and I am POd that this happened right after the DL. Would love to cancel that order and resume business as usual..... don't think its going to happen but I thought I would ask.
Thanks

I asked because it sounded as if someone been at the system, and kicked it dead.
If noone lives nearby it must have been a ghost. Could it have been an electrical ghost? A power surge or similar.
An automatic ghost?! Why don't you turn the system off when leaving it? An automatic update downloaded something, an automatic restart of the system and...
This is very old, and may not be about your system at all really. The northbridge of old handles SATA things. Can you check if there has been a problem with the cooling or something. It's a bit of a long-shot really.

Controller failure - APs still online?

If I have one controller and it fails, will the lightweight APs still be online? Or will my wireless network be down?
I searched and cannot find an answer to this question.
Thanks for your help.

To disable or enable the 802.1X authentication, use this command:
config wlan security 802.1X {enable | disable} wlan-id

Storage Spaces - unmark hard drive as "retired" after SATA controller failure

Hello,
I am having a problem with Storage Spaces - it won't start recovering the mirror set.
The mirror set got degraded because one of SATA ports on the controller went bad (I/O errors with any hard drive on that port).
After the hard drive is reconnected to another port, Storage Spaces still shows the drive as 'Retired'.
I can unmark the disk by running Set-PhysicalDisk -UniqueID id -Usage AutoSelect
Then, I can access a Simple (non-mirrored) thin-provisioned virtual disk located on that physical disk, and there are no I/O errors in Event Log, or any other errors.
But after I attempt to initiate Mirror set repair (Repair-VirtualDisk -FriendlyName mirror), the physical disk becomes 'Retired' again, although no I/O errors have occured.
Seems that somewhere in the metadata there is incorrect information about actual disk health state, and I need a way to reset it.
Thank you.

Thank you for reply.
Figured out a workaround which solved the problem, however, it is somewhat crude (use at your own risk!):
1. If there are any non-redundant (simple) virtual disks in the storage pool, back up the data somewhere (they have to be deleted and recreated from scratch)
2. Disable the spaceport driver (sc config spaceport start= disabled), so you can see the hidden GPT partitions of type 'e75caf8f-f680-4cee-afa3-b001e56efc2d'.
3. Reboot.
4. Wipe the affected physical hard disk using diskpart (use
clean command)
5. Enable the spaceport driver (sc config spaceport start= boot) and reboot
6. Now you can add the affected hard disk yet again
7. At this point - the affected hard disk is listed twice - one in the 'Retired' state, the other is 'Healthy'.
8. Initiate the repair of the affected mirror virtual disks, and wait for completion
9. Now you can delete the 'Retired' disk.
All that said, it would be great to have an option to un-retire a hard disk in place, without going through all that hassle.
Set-PhysicalDisk -UniqueID id -Usage AutoSelect does not really work (the disk becomes Retired again when starting repair).
Remove-PhysicalDisk also fails with 'Not supported' error (unless you do the above workaround).
Thank you.

Fiberchanel volumes deactivate on controller failure

We have 4 netware 6.5 sp8 connected to a dual controller compellent San with brocade switches and qlogic cards. Both 4 and 8 gig dual port models. We also have oes and windows on the same San.
Whenever we have a controller fail over our netware servers hang or abend. The other OS's survive. We've worked with compellent support without success. We've tried changing time out values in the BIOS and at the command line on the drivers in startup.ncf.
I thought I'd check to see if anyone has seen anything similar.
Thanks

On 13.01.2012 07:56, raronson wrote:
>
> We have 4 netware 6.5 sp8 connected to a dual controller compellent San
> with brocade switches and qlogic cards. Both 4 and 8 gig dual port
> models. We also have oes and windows on the same San.
>
> Whenever we have a controller fail over our netware servers hang or
> abend. The other OS's survive. We've worked with compellent support
> without success. We've tried changing time out values in the BIOS and at
> the command line on the drivers in startup.ncf.
>
> I thought I'd check to see if anyone has seen anything similar.
Do you have multipathing configured properly on Netware?
CU,
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de

Floppy drive controller failure.

I have a MS-6529 845 Pro motherboard, which I installed approximately one year ago. I was in the process of replacing the C: drive in the computer, when I rebooted the computer with the startup disk in the floppy drive to format the new hard drive, the floppy drive will not responed on bootup. I have checked the D-LED indication and the light indication stops at the point where the floppy drive and the controller should initialize. I have replaced the floppy drive and the cable between the drive and the motherboard connection. I have checked the BIOS and it indicates a 3-1/2 floppy drive is setup and enabled. Has the floppy drive controller on the motherboard failed and do I have to replace the Motherboard or is there another option (a flopply drive controller card can be added).

I find it a bit hard to belive the floppy controller got damaged simply by installing a new HDD so I an trying to see if there is a reason for this situation.
I am not aware of any external FDD controllers, only USB floppies ment for laptops, but they are expensive and the board should still be under warrenty so I see no reason to buy one.

SATA Controller for external JBOD box for SPARC machines

Hi,
I've an external disk box with 4 disks with each has 1,5 TB. The disks are configured in one big RAIDZ pool. This box is now connected via USB 2.0 to my Blade 2000 (there's an PCI card with USB 2.0 in the Blade 2000) . This works but the performance is not that good.
Therefore I would like to connect the box via SATA (the box has SATA and USB) to the Blade 2000. But it seems there are still not that much SATA adapters for SPARC machines - at least I did not find one.
Another solution would be an external box for SATA disks that can be connected with firewire or FC - but these boxes seems also to be very rare.
regards
Bernd

Search is your friend...
http://discussions.apple.com/search.jspa?search=Go&q=pcie+sata
Last I remember reading was that there is a card with 8 internal ports and some with external ports are expected to be introduced at MacWorld in Jan.
Patrick

RAID set and JBOD on same controller card?

I'm planning to update my RAID from the current 4-disc software 0 in my MacPro to a RAID 5 with dedicated controller (for now) and here's what I'm planning (tentatively)
• RAID 5 consisting of 8 discs, 4 inside 5.1 MacPro with MaxUpgrade's kit in use for SAS connectivity , and 4 more discs in a 1U rackmount SAS chassis, possibly OWC's new 'trayless' unit, or another similar chassis.
• Areca RAID controller ARC-1880ix-12 is what I'm leaning towards at this time.
I don't have the cash or demand (yet) for a system in a huge expansion chassis and 24 drives, but my the main thing I want to know, (since I've never had this many discs to play around with before) is when I create an 8 disc RAID 5 Array for storage, can I also connect another external chassis to the controller as a JBOD unit and have those drives therein function independently, with swap capability of single volumes? This would be very handy for individual cleint-drive backups and would free up my eSATA interface for file ingest and more flexibility.
I do know I would have to get an adapter to run more than one external SAS connection cause the Card only has one External SAS port as is. I may go with a different card with more channels for more future expansion, but it will more than likely have more internal ports than external.

l_elephant wrote:
your system is on that RAID0?
do you regularly clone your system, for when, (not in case), the RAID0 fails?
Yes, when working I backup the data ideally after every time I add footage to the RAID, if not at least once daily.
have you considered the added security of RAID6 (if your going to have that many drives . . .)
I have, and it will probably be the next step if I go to a RAID larger than 8 discs. IF I do start getting the need for 16+ I may go to a RAID 10.
when you mean storage, do you mean like archival, past projects type storage, or current working projects drive space?
Working projects. Also will look into LTO for archival in the future if the demand necessitates it.
can I also connect another external chassis to the controller as a JBOD unit and have those drives therein function independently, with swap capability of single volumes?
yes
Thank you, this is the main question I had, do you have a specific experience such as this you would share?
I do know I would have to get an adapter to run more than one external SAS connection cause the Card only has one External SAS port as is. I may go with a different card with more channels for more future expansion, but it will more than likely have more internal ports than external.
you're describing SAS expander. You can easily have more than 200 drives connected.
No I'm describing a PCI plate SFF-8087 to SFF-8088 Adapter, like this one:
http://www.pc-pitstop.com/sascablesadapters/AD8788-4.asp
Like I said, most of the cards I'm looking at have more internal 8087 ports than the external 8088 ports.
what kind of work are you doing? Vidéo, audio? One project at a time, or parallel projects? Alone or with others (colleagues, employees)? The Caldigit system looks nice for large teams of people.
This would be a mobile installation, with me as a single operator handling digital video footage, so this would be direct attached storage, no network interface necessary. Usually one project at a time, but if I get busier hopefully more than one.

Repeated hard drive failure in a few months

Hello everyone, I own a 15.4" macbook pro, bought in october 2009 directly from an apple operator by phone; on february, after just 4 months, I wake from sleep mode my mbp and I see the "beach ball" spinning cursor, and the system freezed. After a few minutes of freeze, I am forced to shut it down by keeping the power key pressed. I reboot, and the only thing appearing is the folder with a question mark on it.. I manage to recover a lot of my data ONLY using Disk Warrior, which warns me that my hard drive is severely compromised. I didn't notice any problem
in the previous days, it just happened from one day to another. I'm out of luck.. but still it's something that can happen. Apple changed my hard drive immediately.
Today, after less than other 4 months, the same problem. I open my laptop, it wakes from sleep and it remains freezed.. I fear the worst. At reboot, at first it showed the folder+question mark, now only the "deny" sign (circle with a bar). The hard drive doesn't make any weird noise nor click, but restarting with a Ubuntu I just manage to recover a few files before getting a lot of input/output errors. Now I can't see my hard drive anymore listed among peripherals, neither using Disk Warrior which recognize it, but It cannot communicate with the hard drive.
I'm still under warranty, so Apple will change my hard drive but..
a) is it possible that a hard drive fails from one day to another without any symptom in the previous days? It worked like a charm, and suddenly it broke. In both cases.
b) in your opinion, is it possible that I'm just out of luck or it cannot be a coincidence? Could it be a power supply problem, or a sata controller failure? In this case, how does Apple behave? Just substituting the hard drive for the second time wouldn't be enough, I think..

LorenzoMarcon wrote:
a) is it possible that a hard drive fails from one day to another without any symptom in the previous days? It worked like a charm, and suddenly it broke. In both cases.
b) in your opinion, is it possible that I'm just out of luck or it cannot be a coincidence? Could it be a power supply problem, or a sata controller failure? In this case, how does Apple behave? Just substituting the hard drive for the second time wouldn't be enough, I think..
Hello LorenzoMarcon
a) Apple is usually very good about picking the hardware that goes into their machines. But yes it is possible you had two defective drives. The trouble with hard drives is, they are really not designed to be moved around. The tolerances inside a laptop drive are so tight than almost any defect will cause the drive to fail.
b) From the description of the failure and the fix I think it is just your drives failing not a problem with your machine. If you had a power supply issue you would notice other issues with your mac; flickering screen display, odd shutdowns, charging issues, or excessive heat. A SATA controller failure would cause your drives to just not show up since you recovered the first drive with disk warrior the controller is working.
That covers the hardware side of the problem there is another component here that might be affecting it, the environment around the mac. A sudden jar or impact can cause drive failure. There is also a brief window when you have put the mac to sleep but the drive has not finished spinning down where a sudden change in orientation could cause the heads to crash into the drive platter.
I hope this helps.
Mike

Oracle RAC Nodes getting reboot in case of preferred controller failed

When we are disconnecting both Fiber cable from preferred Controller A or plugging out Controller A card from Disk Array(IBM DS 4300), After 90 seconds both the servers are rebooting.
In this time complete RAC network is going out of service for approx 5 minutes.After reboot both servers are coming with both instances without any manual intervention
Its a critical issue for us because we are loosing High Availability, Let us know how we can resolve this critical issue.
Detail of Network:
1. Software- Oracle 10g Release2
2. OS- Redhat Linux 3 (Kernel Version-2.4.21-27.ELsmp)
3. Shared Storage- IBM DS 4300.
4. Multipathing Driver - RDAC (rdac-LINUX-09.00 A5.13)
4. Nodes- IBM 346
5. Databse on ASM
6. ASM,OCR & Voting Disk Preferred controller is A.
7. Hangcheck timer value is 210 seconds.
8. Both Server available with 2 HBA port . I HBA port is connected with Controller A and Seconfd HBA port is connected with Controller B of SAN Disk Array.
As per my understanding,
Voting disk resides in Disk Array and Controller A is preferred owner of Voting Disk LUN.. When i am disconnecting both fiber cable from preferred controller A , then Both Nodes Clusterware software trying to contact with Voting Disk, When they are unable to contact with Voting disk in specfic time period, they are going for reboot.
I tested Controller failure testing with Oracle RAC software as well without Oracle. Without Oracle its working fine and reason behind, in that time Disk Array is waiting for approx 300 seconds for changing preferred controlller from A to B.
But With Oracle, Clusterware Software reboot both nodes before Controller can shift from A to B.
So if i conclude,the tech who has good understanding of Oracle Clusterware on Linux OS & IBM RDAC multipath driver can help me.
when we install Oracle RAC on Linux, it is required to configure hangcheck timer.
Oracle recomends 180 second.
It means if one of node is hanging, then second node will wait for 180 seconds, if within 180 seconds ,it is not able to resolve this situation then it will reboot hung node.
I think Hangcheck timer configuration reuired only with Linux OS.
Configuration File
cat >> /etc/rc.d/rc.local << EOF
modprobe hangcheck-timer hangcheck_tick=15 hangcheck_margin=60

Sorry
Hangcheck timer is
Configuration File
cat >> /etc/rc.d/rc.local << EOF
modprobe hangcheck-timer hangcheck_tick=30 hangcheck_margin=180

Mini failure help - beyond the flashing finder

I have one of the original 1.25 Mac Mini G4's with 1.25 RAM running 10.4.10, all other software UTD & permissions repaired.
Recently, perhaps following a thunderstorm (despite surge protector), upon returning from vacation, the flashing finder folder/question mark screen had appeared.
Did the power disconnect, depress the power button/reconnect power source recommendation, reset PRAM (via traditional option-apple-P-R & open firmware methods) without change.
Booting with 10.4 OS DVD not successful. Booting with option depressed & OS DVD in place, purple screen with arrows appeared, but no selections to choose from. DVD is audibly spinning & will not eject (via multiple methods).
I have been able to boot the mini only using an external HD with 10.4 installed.
Any other suggestions/options from anyone?
Thanks in advance!
Message was edited by: OTISjones

Anyone willing to offer odds of successful recovery with internal HD >replacement?
Under normal circumstances I'd say pretty good, but under the circumstance where the system won't boot from the original install disk, I'd say it may be somewhat less since that tends to point to a controller failure - though a failed hard drive could also cause issues with the optical depending on how it had failed.
However, before writing off the chances, does the internal optical drive recognize any kind of disk? If you put in a music CD, does it 'see' it? Does iTunes open? If you insert a disk into the optical drive, does Disk Utility on the booted external drive see the optical drive and the volume on the inserted disk?
If yes to any of those, then the controller would seem to be OK, and an internal hard drive replacement may well be a good move. Indeed, with the cost of a replacement drive, if you're comfortable doing the work yourself, it's a sensible step to take anyway I'd think.
What makes this more problematic to determine is not knowing what caused the failure in the first place. You hint that there may have been a storm issue, which may suggest a surge or spike and which can cause significant chip damage - often beyond repair or retrieval, but that would often cause boot failure due to power on self test failure.

Netra 440 - pci@1e failure msg at OpenBoot Diagnostics

Hi,
We have here some problems at a new netra 440. In the OpenBoot Diagnostics we receive the msg:
WARNING: Device /pci@1e,600000/ide@d being marked with 'status' == fail
SC Alert: /pci@1e,600000/ide@d fail
When the OpenBoot Diagnostics are finished solaris starts but only with a few processes.
the sun docs suggests a ide controller failure. But no actions are given. What can I do. Can this be fixed are should I arrange a replacement?
The complete boot log:
Executing Power On Self Test
0>
0>@(#) Sun Fire[TM] V440,Netra[TM] 440 POST 4.16.3 2004/11/05 20:05
/dat/fw/common-source/firmware_re/post/post-build-4.16.3/Fiesta/chalupa/integrated (firmware_re)
0>Copyright � 2004 Sun Microsystems, Inc. All rights reserved
SUN PROPRIETARY/CONFIDENTIAL.
Use is subject to license terms.
0>OBP->POST Call with %o0=00000800.01014000.
0>Diag level set to MAX.
0>Verbosity level set to NORMAL.
0>Start Selftest.....
0>CPUs present in system: 0 1 2 3
0>Test CPU(s)..../ERROR: Timeout on 0 waiting for resource type 2048.
Done
0>Interrupt Crosscall....Done
0>Init Memory..../
SC Alert: Host System has Reset
Done
0>PLL Reset....Done
0>Init Memory....Done
0>Test Memory....Done
0>Test CPU Caches....Done
0>Functional CPU Tests....Done
0>IO-Bridge Tests....Done
0>INFO:
0> POST Passed all devices.
0>
0>POST: Return to OBP.
SC Alert: Host System has Reset
Configuring system memory & CPU(s)
Probing system devices
Probing memory
Probing I/O buses
screen not found.
keyboard not found.
Keyboard not present. Using ttya for input and output.
Probing system devices
Probing memory
Probing I/O buses
Netra 440, No Keyboard
Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.16.4, 8192 MB memory installed, Serial #68881000.
Ethernet address 1:4:b1:c5:25:24, Host ID: 84c42947.
Running diagnostic script obdiag/normal
Testing /pci@1f,700000/network@1
Testing /pci@1e,600000/ide@d
ERROR : IDE device did not reset, busy bit not set
DEVICE : /pci@1e,600000/ide@d
SUBTEST : selftest:reset&check-diag
MACHINE : Netra 440
SERIAL# : 68881000
DATE : 06/07/2006 12:57:28 GMT
CONTR0LS: diag-level=max test-args=except 3
Error: /pci@1e,600000/ide@d selftest failed, return code = 1
Testing /pci@1e,600000/isa@7/flashprom@2,0
Testing /pci@1e,600000/isa@7/serial@0,2e8
Testing /pci@1e,600000/isa@7/serial@0,3f8
Testing /pci@1e,600000/isa@7/rtc@0,70
Testing /pci@1e,600000/isa@7/i2c@0,320:tests={[email protected],[email protected],[email protected],[email protected]}
Testing /pci@1e,600000/isa@7/i2c@0,320:tests={[email protected]}
Testing /pci@1c,600000/network@2
Testing /pci@1f,700000/scsi@2,1
Testing /pci@1f,700000/scsi@2
ERROR: OpenBoot Diagnostics failed.
ERROR: OpenBoot Diagnostics failed
WARNING: Device /pci@1e,600000/ide@d already marked with 'status' == fail
SC Alert: /pci@1e,600000/ide@d fail
SC Alert: Host System has Reset
Probing system devices
Probing memory
Probing I/O buses
screen not found.
keyboard not found.
Keyboard not present. Using ttya for input and output.
Probing system devices
Probing memory
Probing I/O buses
Netra 440, No Keyboard
Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.16.4, 8192 MB memory installed, Serial #68881000.
Ethernet address 1:4:b1:c5:25:24, Host ID: 84c42947.
ERROR: OpenBoot Diagnostics failed
WARNING: Device /pci@1e,600000/ide@d being marked with 'status' == fail
SC Alert: /pci@1e,600000/ide@d fail
Rebooting with command: boot
Boot device: disk File and args:
SunOS Release 5.8 Version Generic_117350-34 64-bit
Copyright 1983-2003 Sun Microsystems, Inc. All rights reserved.
WARNING: status 'fail' for '/pci@1e,600000/ide@d'
Hardware watchdog enabled
configuring IPv4 interfaces: ce0 ce2 ce3.
Hostname: 192.168.0.158
The system is coming up. Please wait.
checking ufs filesystems
/dev/rdsk/c0t0d0s5: is logging.
/dev/rdsk/c0t0d0s6: is logging.
the processes running on solaris:
UID PID PPID C STIME TTY TIME CMD
root 0 0 0 15:00:06 ? 0:04 sched
root 1 0 0 15:00:06 ? 0:00 /etc/init -
root 2 0 0 15:00:06 ? 0:00 pageout
root 3 0 0 15:00:06 ? 0:00 fsflush
root 78 1 0 15:00:10 ? 0:00 /sbin/sh /sbin/rc2
root 171 78 0 15:00:12 ? 0:00 /sbin/sh /etc/rc2.d/S73nfs.client start
root 187 178 0 15:01:13 ? 0:00 in.telnetd
root 147 1 0 15:00:12 ? 0:00 /usr/sbin/rpcbind
ipunity 189 187 0 15:01:14 pts/1 0:00 -bash
root 68 1 0 15:00:09 ? 0:00 /usr/lib/sysevent/syseventd
root 77 1 0 15:00:10 ? 0:02 /usr/lib/picl/picld
root 181 1 0 15:00:12 ? 0:00 /usr/lib/nfs/lockd
root 173 171 0 0:00 <defunct>
root 172 171 0 0:00 <defunct>
daemon 182 1 0 15:00:12 ? 0:00 /usr/lib/nfs/statd
root 175 171 0 15:00:12 ? 0:00 /sbin/sh /sbin/mountall -F nfs
root 180 179 0 15:00:12 ? 0:00 mount 10.37.206.132:/public/um/ /nas1
root 179 175 0 15:00:12 ? 0:00 /sbin/mount -a -F nfs
root 178 1 0 15:00:12 ? 0:00 /usr/sbin/inetd -s
root 208 178 0 15:24:19 ? 0:00 in.telnetd
ipunity 210 208 0 15:24:19 pts/2 0:00 -bash
ipunity 291 210 0 16:12:13 pts/2 0:00 telnet 10.135.57.170
root 295 189 0 16:18:28 pts/1 0:00 ps -ef
Regards,
Edwin de Ruiter

The only IDE device in that system is your optical drive.
I noticed that the OBP version is a tiny bit down-rev.
Did this system come from a Reseller ?
Or, perhaps, has it been sitting idle at your organization for a few months and just now been unpacked ?
If sold by Sun, I'd have expected to see the latest 4.17.x firmware.
Who installed the optical drive, the vendor or your staff ?
There may just be an incomplete installation of the drive to its IDE backplane.
Yes, open a service case with Sun's techsupport.
They'll get it sorted out properly.

ASM Failure Groups and Disk Controllers

Hey guys,
I understand that it's considered a good idea to set different Failure Groups for disks which could fail at the same time because they share hardware, For example, disks that share the same disk controller.
Now, my question might be silly but I don't understand why we would configure multiple disks with the same disk controller.
Thank you,
Jerry.

Jerry wrote:
Hey guys,
I understand that it's considered a good idea to set different Failure Groups for disks which could fail at the same time because they share hardware, For example, disks that share the same disk controller.
Now, my question might be silly but I don't understand why we would configure multiple disks with the same disk controller.
Hi Jerry,
Your question is not silly.
Usually you have one or more disk controllers in a system
Each controller can handle up to x disks ( in the past this was 15, don't know if this still is )
If you wanted to be redundant, like with RAID1 ( mirrorring ) configurations a system was usually configured to have an even amount of disks
spread evenly over two controllers.
This then covered disk-failure and controller failure, as each logical disk in the mirror-set is accessible over two controllers and consists of -at least - two disks.
In ASM you would configure the main diskgroup on the first set of disks on the first controller.
The failure group would then be configured on the second set of disks on the second controller.
In the SAN world, with ASM using Host Based Mirroring, the Failure group can also be a diskset on a totally different storage-server
Edit: Totally forgot: More disks on one controller mean more parallel access to your data, as you can read all seperate disk seperately.
In the current days with the enormous disks it is quite easy to configure just one disk in your system, but that will bring you quite easy huge performance problems
HTH
FJFranken
Edited by: fjfranken on 20-jul-2011 6:53

Controller failure / e-jbod

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