Xserve Raid Unmounts During Playback

We are using our RAID with Final Cut Pro 5. We are trying to layback a 1080i 10bit 23.98 show with 4 audio channels but during playback the Raid often unmounts itself, causing Final Cut to freak out. Normally at this point we have to restart the G5 in order to get the RAID to mount normally again. Sometimes this happens after 20 minutes of playback, sometimes after 40, and last night it was happening after a mere minute or two of playback. Some RAID info: We have about 2.5 TB available which is split between 14 drives (7 on each controller). We are using RAID 5 and there is currently 500 GB of free space. Any suggestions would be greatly appreciated. If you need more info, let me know what/where to get it and I will post it here. Thanks in advance!
G5 Mac OS X (10.4.6)

Ok, here is the system log from one of the crashes:
Aug 14 15:43:30 apples-power-mac-g5 kernel[0]: AppleRAID::completeRAIDRequest - error 0xe00002ca detected for set "FCP2 RAID" (B52BC88D-65F5-42D7-B208-18F3F91D9ACB), member 82A77A15-2AE5-49EF-AA43-88F8CA0B5734, set byte offset = 2892383387648.
Aug 14 15:43:30 apples-power-mac-g5 kernel[0]: disk3: I/O error.
Aug 14 15:43:30 apples-power-mac-g5 kernel[0]: disk3: device is offline.
Aug 14 15:46:45 localhost kernel[0]: standard timeslicing quantum is 10000 us
Aug 14 15:46:45 localhost mDNSResponder-107.4 (Nov 15 2005 21: 34:38)[41]: starting
Aug 14 15:46:45 localhost kernel[0]: vmpagebootstrap: 1136977 free pages
Aug 14 15:46:45 localhost kernel[0]: migtable_maxdispl = 70
Aug 14 15:46:45 localhost kernel[0]: 110 prelinked modules
Aug 14 15:46:45 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Aug 14 15:46:45 localhost kernel[0]: The Regents of the University of California. All rights reserved.
Aug 14 15:46:45 localhost kernel[0]: using 8192 buffer headers and 4096 cluster IO buffer headers
Aug 14 15:46:45 localhost kernel[0]: DART enabled
Aug 14 15:46:45 localhost kernel[0]: FireWire (OHCI) Apple ID 42 built-in now active, GUID 000d93ff fe6ed1a0; max speed s800.
Aug 14 15:46:45 localhost kernel[0]: Security auditing service present
Aug 14 15:46:45 localhost kernel[0]: BSM auditing present
Aug 14 15:46:45 localhost kernel[0]: disabled
Aug 14 15:46:45 localhost kernel[0]: rooting via boot-uuid from /chosen: 4446EF8E-1DCA-3D82-BCD2-31BD942F1321
Aug 14 15:46:45 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
Aug 14 15:46:45 localhost kernel[0]: Got boot device = IOService:/MacRISC4PE/ht@0,f2000000/AppleMacRiscHT/pci@7/IOPCI2PCIBridge/k2-sat a-root@C/AppleK2SATARoot/k2-sata@0/AppleK2SATA/ATADeviceNub@0/IOATABlockStorageD river/IOATABlockStorageDevice/IOBlockStorageDriver/ST3160023AS Media/IOApplePartitionScheme/Untitled@3
Aug 14 15:46:45 localhost kernel[0]: BSD root: disk1s3, major 14, minor 5
Aug 14 15:46:45 localhost kernel[0]: jnl: replay_journal: from: 10632192 to: 11316224 (joffset 0x4aa000)
Aug 14 15:46:45 localhost kernel[0]: HFS: Removed 2 orphaned unlinked files
Aug 14 15:46:45 localhost kernel[0]: Jettisoning kernel linker.
Aug 14 15:46:45 localhost kernel[0]: Resetting IOCatalogue.
Aug 14 15:46:45 localhost kernel[0]: Matching service count = 0
Aug 14 15:46:45 localhost kernel[0]: Matching service count = 6
Aug 14 15:46:45 localhost kernel[0]: Matching service count = 6
Aug 14 15:46:45 localhost kernel[0]: Matching service count = 6
Aug 14 15:46:45 localhost kernel[0]: Matching service count = 6
Aug 14 15:46:45 localhost kernel[0]: KONADriver::init
Aug 14 15:46:45 localhost kernel[0]: KONADriver::probe() score = 0
Aug 14 15:46:45 localhost kernel[0]: KONADriver::start
Aug 14 15:46:45 localhost kernel[0]: BoardID=10174700
Aug 14 15:46:45 localhost kernel[0]: KONADriver::ProgramXilinxDefault()
Aug 14 15:46:45 localhost kernel[0]: IOPlatformControl::registerDriver Control Driver AppleSlewClock did not supply target-value, using default
Aug 14 15:46:45 localhost kernel[0]: KONADriver::start return: OK
G5 Mac OS X (10.4.7)

Similar Messages

Xserve RAID - to slow during video capture

I have Xserve RAID with 14 drives in 2 stripes ( 2x7 drives ) in RAID5. I can see in my system two "drives" called RAID1 & RAID2 - each 2.18TB.
When I`m using BlackMagic Disk Speed test utility I have only 150MB/s read and 100MB/s write which is to slow for 1080i HD.
What is wrong ? What should I do to get better performance ?
I`m new in Xserve so maybe somebody could explaine me "step by step" what to do.
I read a little about RAID50 but I have no idea how to create it.
Regards.
Rafal Szermanowicz
www.grupa13.com

Those speeds are fast enough for HD capture.
Anyway, to ensure you're getting full speed, make sure:
1) You have the 1.5 firmware on the RAID
2) Enable controller write cache is checked (enabled)
3) Use drive cache is checked (enabled)
4) Allow host cache flushing is DISABLED (unchecked)
5) Use steady streaming mode is DISABLED (unchecke)
For capture, leaving the settings at 8 stripes as prefetch is probably best. If you are going to be doing extensive playback of uncompressed HD, you may want to consider setting the prefetch at 128 stripes.

X-Serve RAID unmounts on large file copy

Hi
We are running an X-Serve RAID in a video production environment. The RAID is striped RAID 5 with 1 hot spare on either side and concatenated with Apple Disk Utility as RAID 0 on our G5, to appear as one logical volume.
I have noticed, lately, that large file copies from the RAID will cause it to unmount and the copy to fail.
In the console, we see:
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: Notification = 5 (External Bus Reset) for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: External Bus Reset for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: Notification = 7 (Link Status Change) for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: FusionFC: Link is down for SCSI Domain = 1.
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: Notification = 8 (Loop State Change) for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: FusionFC: Loop Initialization Packet for SCSI Domain = 1.
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: Notification = 7 (Link Status Change) for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: FusionFC: Link is active for SCSI Domain = 1.
May 4 00:23:37 Orobourus kernel[0]: FusionMPT: Notification = 6 (Rescan) for SCSI Domain = 1
May 4 00:23:37 Orobourus kernel[0]: AppleRAID::completeRAIDRequest - error 0xe00002ca detected for set "tao.av.complexity.org" (868584D1-E485-4B37-AFCE-E7AFC3AD5BB7), member CBDFD75C-5DC8-4089-A7AE-1EFBE0B1A6EB, set byte offset = 1674060574720.
May 4 00:23:37 Orobourus kernel[0]: disk5: I/O error.
May 4 00:23:37 Orobourus kernel[0]: disk5: device is offline.
May 4 00:23:37 Orobourus kernel[0]: AppleRAID::recover() member CBDFD75C-5DC8-4089-A7AE-1EFBE0B1A6EB from set "tao.av.complexity.org" (868584D1-E485-4B37-AFCE-E7AFC3AD5BB7) has been marked offline.
May 4 00:23:37 Orobourus kernel[0]: AppleRAID::restartSet - restarting set "tao.av.complexity.org" (868584D1-E485-4B37-AFCE-E7AFC3AD5BB7).
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: jnl: dojnlio: strategy err 0x6
May 4 00:23:37 Orobourus kernel[0]: jnl: end_transaction: only wrote 0 of 12288 bytes to the journal!
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: jnl: close: journal 0x7b319ec, is invalid. aborting outstanding transactions
Following such an ungainly dismount, the only way to get the RAID back online is to reboot the G5 - attempting to mount the volume via Disk Utility doesn't work.
This looks similar to another 'RAID volume unmounts' thread I found elsewhere in the forum - it appeared to have no solution apart from contacting Apple.
Is this the only recourse?
G5 2.7 6.5Gb + X-RAID 3.5Tb Mac OS X (10.4.9) Decklink Extreme / HD

There should be no need to restart the controllers to get additional reporting -- updating the firmware restarts them.
If blocks are found to be bad during reconditioning, then the data in the blocks should be relocated, and the "bad" blocks mapped out as bad. The Xserve RAID has no idea whatsoever what constitutes a "file," given it doesn't know anything about the OS (you can format the volumes as HFS+, Xsan, ZFS, ext3, ReiserFS, whatever... this is done from the host and the Xserve RAID is completely unaware of this). So if the blocks can be successfully relocated (shouldn't be too hard, given the data can be generated from parity), then you're good to go. If somehow you have bad blocks in multiple locations on multiple spindles that overlap, then that would of course be bad. I'd expect that to be fairly rare though.
One thing I should note is that drives don't last forever. As the RAID ages, the chances of drive failure increase. Typically drive lifespan follows a "bathtub curve," if you imagined looking a a cross-section of a crow's foot tub. Failures will be very high early (due to manufacturing defects -- something testing as "burn in" should catch -- and I believe Apple does this for you), then very low for a while, and then will rise markedly as drives get "old." Where this is would be a subject for debate, but typical data center folks start proactively replacing entire storage systems at some point to avoid the chance of multiple drive failure. The Xserve RAIDs have only been out for 4 years, so I wouldn't anticipate this yet -- but if it were me I'd probably start thinking about doing this after 4 or 5 years. Few experienced IT data center folks would feel comfortable letting spindles run 24x7x365 for 6 years... even if 95% of the time it would be okay.

Audio dropping out during playback in timeline

Hey everyone,
I've dug through these forums and unless I just completely overlooked it I have not found a solution to this issue. I've listed my setup below and then have stated the issue I'm experiencing.
27-inch, Mid 2011 iMac
3.4 GHz Intel Core i7
16GB 1333 MHz DDR3
AMD Radeon HD 6970 1024MB
Running Mac OS X Lion 10.7.5 (11G63)
Currently working off of a portable 1TB G-Technology G-DRIVE via FW800.
Working in Premiere Pro CS6 Version 6.0.2
Editing in a sequence with settings:
1920 x 1080 23.976fps (also tried in a 29.97fps timeline with same issue)
Working with footage that is 23.98fps
Working with a combination of ProRes 422 (LT) and native H.264 Quicktime files strait from a 5D Mark 3.
The issue I'm having is during playback the audio will competely drop out. The video will continue playing on just fine but the audio drops completely out. All audio levels drop as well in the audio mixer meters so it truly is losing all communication with my audio layers in the timeline.
I read in other forums to go into Finder and delete out the .caf files, re open Premiere Pro, wait for them to be recreated then carry on. I tried this approach with no luck. Deleting the .caf did not change anything. Audio is still dropping out as I try to play through my timeline. The only way to get the audio back is to pause then press play again. I have 5 total channels of audio with only 2 of those channel active.
Any ideas on what is happening would be greatly appreciated. This is incredibly frustrating have to export out a video just to be able to watch it through.

Having this annoying problem also. Using the Space Bar to play timeline it takes pressing and holding to a count of three or trying press play three time in a row using the space bar to get ungarbled audio, or any audio at all in a normal uncomplicated sequence on the timeline.
Really annoying. Audio used to be so simple and untaxing to a sequence.
Adobe Premiere Pro CC 2014.1 release
8.1.0(81) Build
OSX 10.8.4
40 GB RAM
G Raid G Speed Q w/ ESATA connection
1920x1080 29.97 Progressive Scan Sequence
48Khz
Apple PRoRes 422
12 channels of audio/ only 2 of 12 monitored.
1/2 resolution on Program monitor
ADOBE.....WISH THERE WAS A SOLUTION?

Problems with Xserve RAID

I have been having problems with Xserve RAID, which happened in a close time span, but may not be related. The Xserve RAID is set up with 7 disks with RAID 5, totaling to 1.3TB in storage capacity.
First, the first disk failed and the RAID system was degraded. Since I got a very similar 250GB harddisk (but without "Apple Firmware") I tried putting it as a replacement. It was recognized but it became a hot spare disk, even though I did not set the system to use hot spare.
Later Mac OS X reported that the Xserve RAID's 1.3TB volume was unmounted. I check with Disk Utility, and it reported a lot of errors. I ended up with about 70GB of files in lost+found, and I confirmed that many files were missing. Disk Utility could not really fixed it.
I put back the failed disk, and Xserve RAID successfully rebuilt the array. I did "Background Array Conditioning" to perform surface scan and mapping of bad blocks. It completed without error. I then did "Verify Parity Data", and it completed but with error, as follows:
Event:
Disk 5 Reported An Error. COMMAND:0x37 ERROR:0x64 STATUS:0x81 LBA:0x119E6880
Description:
The drive reported ATA error. This is a failure in the communication from the RAID Controller to the drive.
Any idea what is happening with this Xserve RAID? Bad disk? Bad controller? Or what? Any help is appreciated.
Thanks,
Xserve RAID Dual G5 2.0GHz Mac OS X (10.3.9)

After reading here and there on the net (including this forum), yes I realized that the "Apple Firmware" thing may be significant after all. But since I set the Xserve RAID to use RAID 5, a failure of one disk should not affect data integrity. And surface scan was successful, implyingthat all disks are now free from defects. So why did it lost 70GB worth of data? I experienced disk hardware failure often with Windows system but never experienced losing data while the hardware seems to be fine. Without knowing why this happened, I feel scared to put data on Xserve RAID, and this is ironic since this 1.7TB Xserve RAID is meant for storing data safely...

Mounting Xserve Raid Volumes

I'm relatively new to Xserve RAID and I hope this isn't a topic that's already been covered.
If I unmount (or eject) a RAID volume, how do I re-mount it. Other than rebooting the system.
The RAID volumes don't appear in /etc/fstab. Where exactly does the system store the volume which are to be mounted at boot.
Thanks..
-- Bob

You might see the volumes in disk utility, and you can remount them from there.
Otherwise, you could unplug and re-plug the cable, and they'll show up, if you have physical access.

Suggested methods for full backup of XServe RAID data

I know this is only peripherally related to the discussion topic, but since every other suggestion posted here is followed by the disclaimer that you should make a full backup of your data before proceeding with any major operations on your RAID arrays, I'd like to know what more experienced admins do in order to create a full backup for reasonably fast recovery in case of substantial data loss during maintenance/repair.
Our current "backup" availability is incremental optical disc archival (our data is mostly "write-once"), but this isn't entirely practical for recovery since it's over a terabyte of data. Since the connected server has a free hot-swappable SCSI drive bay as well as an interface for external SCSI devices, not to mention the fiber channel and ethernet interfaces, the options that I'd consider in order would be:
1. A handful of 150-500 Gb SCSI hard drives, rotated out of the hot-swappable bay
2. An external tape drive attached to the SCI interface (with appropriate tape size, maybe the LTO-2 with 200Gb native capacity?)
3. Some other external SCSI storage device
4. Larger optical disc archival (I hear there are technologies arriving in the near future)
5. Network-based option; remote seems impractical due to sheer size, but perhaps local?
The idea is to make a full backup (long-term solutions are superior of course) of 1-2 Tb of data on the XServe RAID before attempting major surgery. Suggestions for common, accepted, tested, efficient methods for accomplishing this would be greatly appreciated. I apologize if this thread isn't on-topic enough for some of you.
-Brian

Brian,
Tape IMO is kinda yucky (to steal a term from your average 3 year old). It's fairly slow to back up to, it's very slow to restore, and it's actually not that reliable by itself (I worked with a large enterprise customer who said their backups were successful about 70% of the time (!!!)).
That said, tape has the advantage that you can offsite it and archive it very cheaply, and the media are fairly cheap, so you can make lots of backups, so if one fails, you probably can restore the data from another tape.
Disks are more expensive initially, but end up being pretty reliable, and you get a lot more flexibility (plus, they're fast).
An emerging "best of both worlds" backup strategy is what's called disk to disk to tape, where you typically back up to another large "disk," for example a second Xserve RAID. Data is then backed up from the second disk to tape, which is taken offsite... thus tape is used for what it's best at (offsite archival). Restore can be from disk in most cases, which is 10-20x faster than restoring from tape. People use software packages like Netvault's Bakbone or Atempo's Time Navigator, which can handle the whole process, and it works quite well. The backup disks (e.g. the RAID) can be onsite, or can be at a backup site a couple KM away, attached via optical (this is preferable, for DR reasons).
For cases where a second Xserve RAID is prohibitively expensive, cheaper (and slower) RAID 5 enclosures like Wiebetech's RAIDtech can provide a large (say, 1.6 TB) RAID 5 volume, accessible over FW800 or SATA (not sure if they have a SATA-based one yet).

What is the best way to increase the size of a "full" Xserve raid?

Hi,
our Xserve raid consists of 2 x 7 x 350GB disks.
These are arranged in 2 volumes (one per controller), RAID 0+1, 3 disks striped, then mirrored, and such are using 6 of the 7 disks per controller. 1 disk per controller is configured as a hot spare.
During time both volumes have filled up and now there only are 100GB left on every volume and we need more space
Is there a way to hot replace 350GB disks by 750GB disks?
Or is the only way to copy data off, replace disks, and restore data?
I would guess, that I can replace one disk with a 750GB disk, but only 250GB of it will be used. If I then would wait for reconstruction of that new part, and then replace its counterpart? Would only the first 350GB be reconstructed and the 400GB be lost, or would the raid recognize the free space and allow to add it to the stripes and mirrors?
Cheers,
Martin

A disks in the array need to be the same size, so your guess is correct - if you replace a disk with a larger disk, the additional space will be lost.
As a result there's no trivial way of doing this.
Copying off the data, reformatting and restoring the data is the best way to go.
If that's not possible, you have one small chance thanks to how you've currently configured the arrays as 0+1.
You could break the mirror on controller 1- that would give you two logical arrays of three disks each. You could then take the data off the 0+1 array on the second controller and put it on the second half of the first controller, leaving the second controller's volumes spare.
Then destroy both volumes on the second controller and rebuild it as a RAID 5 volume. If you want to retain a hot-spare, this will equate to a 6-disk RAID 5, or about 1.8TB
Now you move the data from the two RAID 0 arrays on controller 1 onto the RAID 5 array on controller 2 and repeat the process to rebuild the 6 disks into a single RAID 5 volume. You can then redistribute the files as you like.
Of course, during this process you'll be running with lower (read: no) redundancy, so you had better hope a disk doesn't fail in the process.
A 6 disk RAID 5 is going to offer about the same performance and redundancy as the two mirrored 3-disk RAID 0 arrays (more performance if those RAID 0 arrays are full), with the advantage that RAID 5 isn't so wasteful of disk space (you lose have your total space to the mirror as opposed to one disks-worth of data to parity in RAID 5).
Either way, back the data up first.

Xserve Raid not shutting down

Hi, We are having a problem with our Xserve RAID, which is direct connected to our Powermac G5. When we shut down the computer, we generally turn off the RAID right after. Occasionally (like once every two weeks), when we go to turn the Raid off, it just will not turn off (No matter how long, or how many times we press the power button on the back). Is there some kind of fail safe, that won't let it turn off if something is going on within the RAID? What else could cause this?
Thanks in advance for any help anyone could offer...

I had this same problem in the past week. I couldn't get RAID admin to detect the unit and rebooting etc didn't work. What I did do was unmount the RAID itself from the desktop and then reboot; afterwards I could shut down the RAID unit from the system > shutdown menu.
I should add that my RAID Admin tool didn't detect the unit until I unmounted it and rebooted, but after rebooting it did detect the unit fine.
Of course this may not be the case with you- but it's worth a shot if you haven't already tried it.
Good luck!
Paul
Message was edited by: Paul Munro

Clip's video momentarily freezes during playback

When playing a clip from the Clip library or in the Project timeline the application will periodically freeze; any keyboard inputs (such as hitting 'K' or 'L' during playback) are buffered. Everything on the screen freezes but the audio continues to play. After a couple of seconds the application will unfreeze and the video will "catch up" with the audio. The buffered keystrokes will then take affect.
(It's possible to skim the clip and it will not freeze during this. Skimming backwards and forwards at variable speeds works without a problem.)
For example, I choose a clip that is 11:37:44 in length. The first time the clip is played it freezes about 6 seconds in, then unfreezes 3 seconds later. The second time it doesn't freeze at all but plays straight through. The third time the clip is played it freezes about 4 seconds in and then unfreezes.
It's the random nature of the problem that is so vexing.
I'm running FCPX Trial 10.6.0 on a MacPro 1,1 with 16GB of RAM, running 10.7.5 and using a 2TB eSATA-connected RAID 10 drive. The OWC enclosure is fed by a SeriTek/2ME4 PCI card and the MacPro has been upgraded to an NVIDIA GeForce 8800 GT graphics card. There is 584.29 GB available out of the 2TB.

I logged out and logged in as a different user. I fired up FCPX and imported the same event file from the book.
It did not freeze once during playback.
I then imported one of the clips (.mov) I had imported from tape. Again, no problem whatsoever.
I removed any applications launched during log-in and logged in as normal, launched FCPX and it still exhibited the same problem with freezing.
Since all of the media is on the same (RAID 10) disk and the only difference is the account I've logged in with, it appears that there is a process running under one account that is responsible for the momentary freezing. If I find what it is I'll report back.

Dropped frames during playback due to "slow disk"

I work off an external Rocstor 160gb firewire drive; suddenly as I started to edit a project I get constant dropped frames during playback. It says it's due to "slow disks" and I wondered if my hard drive was dying. But I opened other projects on the drive and they play just fine. Why just this one? It's shot on the same format, captured the same -- nothing's different from my older projects. Maybe the captured media files got corrupted? I've never seen this. I've tried using the Rocstor on three different machines (first a 17" PB, then two different G5 towers) and it happens on all of them. I have FC5 on the PB, but FC6 on the G5s -- doesn't matter. I'm stumped here.

How full's the drive? The fuller it gets, the slower it becomes. If it wasn't a superfast FW drive to begin with (especially a 400 device) You're gonna have problems as it gets fuller... starts slowing down big time around 70% capacity. It's always something... if the drive's not in a fast enclosure, and is also a fastish drive has a least 8mb disk cache, it will behave like this with DV footage.
One thing I've seen and learned from reading a few posts on this is that the better/faster stuff suited for FCP use is worth the investment. G-Raid, Grainite Digital, OWC all sell really nice FW800 setups... they are up to twice as fast as older/slower FW 400 drives. and NEVER buy any more than you need now for storage. It's half the price and twice the speed next time you need more it seems.
eSATA should be considered by any pro. laptop or not.
Jerry

Dropped Frames w/Xserve RAID: Solution

We were having problems with capturing DV footage onto our new Xserve RAID and having dropped frames or even image freeze during the capture. Found some threads on the Xserve RAID forum regarding the issue and after following some of the suggestions (summed up in the article below) we can now report the problem has been solved. However, there are some reports the remedy may need to be reimplemented if the Xserve RAID is powered down. But I hope this helps those out there experiencing similar problems between FCP and Xserve RAID.
http://docs.info.apple.com/article.html?artnum=302780

every night I shut down my xraid unless it's rendering or copy ing. I use raid admin to shut it down. Every morning I start the array from the button on the back, boot the G5, and launch raid admin and uncheck "allow host cache flushing" It's like brushing your teeth and having a shower tho those personal habits don't have to follow the same order

Xserve RAID email problem notification problem

Hello,
I had a big problem last week with losing a lun on the Xserve RAID, after rebuilding the raids and replacing the data, I can no longer send email notifications, I can add email addresses, but nothing happens during email tests.
Any ideas where to start looking?
Thanks in advance,
Michael Germana

I also have this problem but it has been since we first installed the system. Test e-mails don't go out, nor do actual alert e-mails. There is nothing on the SMTP server to evidence that it is receiving any notifications to send, let alone denying any e-mails.

Xserve raid card failing? 3 x 1Tb drives

Hi all
I've had an xserve running for the last month or two now, it has been subject to frequent crashes...
I have applied the latest 10.5.5 update and haven't had a crash for some time now.
This morning I happened to have a look at the server monitor, and there was an error...
I'm a little confused... especially when the xserve is also connected to an APC UPS unit.
Should I be worried about this... is something lurking around the corner?
*Any help/suggestions appreciated.*
http://smam.net/xserve/raid-card.jpg
Az

This is covered in the RAID Utility User's Guide on page 12.
Every 3 months the RAID card will discharge and recharge the battery. During this process, you will see the message.
Regards,
Eric Miller

Disk Utilities -- how to enable Verify on XServe RAID

Could someone please post details on how to get Disk Utilities' Verify function to be enabled for use on XServe RAID?
When I try it, DU reports "disk is busy", and wants me to "unmount" the drive I've selected. The unmount button fails, and separately using the umount command appears to work but Verify still gives same message.
What am I missing?
Mac OS X 10.3.9, Dual G4 XServe, 2 x 7 x 260 G XServe RAID.
Thanks,
Graham
Many Mac OS X (10.3.9) Many

What you're missing is that there are files on the
XServe RAID that are in use. You'll need to quit
whatever processes/applications are using files on
the RAID before Disk Utility can repair it.
Thanks for the comment, but how do I solve this:
a) How do I determine who or what has files open on the affected partition?
b) Do I need to make sure the entire RAID set is not in use, or just the one partition ("Volume" as it appears in Finder) I want to run DU on?
Thanks,
Graham
Many Mac OS X (10.3.9) Many

Xserve Raid Unmounts During Playback

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