Drive Cache Disabled on recently replaced RAID drive

Hello. We recently had a 250GB drive go down in the Xserve RAID at my work. Unable to get a replacement, we put a 500GB drive in. We realize that we will only get 250GB capacity out of the drive. Everything seems to be working fine, but in the RAID admin utility, the newly replaced drive has "drive cache disabled" showing, as well as "powered on hours: unknown"
My questions are: What are the consequences of this? Is this something a firmware update would fix? Any other concerns?
Thanks

The Apple Drive Modules use an Apple specified firmware from the manufacturer. The RAID chassis itself relies on this. So when you replace it with off-the-shelf drives you may not get all the functionality and control, as you're seeing.
No way to fix this other than getting a drive from Apple, or in getting one with the same firmware (maybe same exact model #) that Apple uses on the 500 GB drives.

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Drive cache disabled

We lost a drive in our XRAID. Pulled the bad drive and put another in. It started rebuilding automatically (RAID 5) and everything is up and running. But, I noticed that drive cache is enabled for all other drives in the RAID except the new one. Is this a problem?

The Apple Drive Modules use an Apple specified firmware from the manufacturer. The RAID chassis itself relies on this. So when you replace it with off-the-shelf drives you may not get all the functionality and control, as you're seeing.
No way to fix this other than getting a drive from Apple, or in getting one with the same firmware (maybe same exact model #) that Apple uses on the 500 GB drives.

I have a 4th gen 20G ipod whose hard drive has died. Are replacement hard drives available through the apple store?

I have a 4th gen 20G ipod whose hard drive has died. Are replacement hard drives available through the apple store?

I don't think Apple will do that repair for you, because the iPod is too old. I believe the hard drive type used in 4th gen and older iPods is no longer produced. There may be non-Apple shops who can do the repair, but they may be using a working part salvaged from a used iPod.
If you want to do the repair work yourself, and you are good at such things, this web site has repair guides
http://www.ifixit.com/Device/iPod_Original
(There are probably also YouTube videos on the topic.)
NOTE: There are two hard drive physical sizes. The thick version has two platters, and corresponds to the "thick" iPods (with double storage capacity). A 4th gen 20GB model should be the thin version. The hard drive used in iPods up to 4th gen should work interchangeably, but 5th gen and later iPods use a different type.
I have a 4th gen iPod that started out as a 20GB. The hard drive failed, so I put a compact flash card on an adapter in there. The adapter is like this one (I bought it a few years ago so it's probably not the same seller)
http://www.ebay.com/itm/NEW-Compact-Flash-CF-SSD-To-Toshiba-IPod-1-8-inch-Adapte r-Black-/121174875639
The compact flash card is standard; I bought the cheapest one. I currently have an 8GB card in there, but prices have come down, so I may get a 64GB card soon. It works great with the 8GB card. No more hard drive spin-up delay. Battery lasts longer. It's lighter. And it should be more shock resistant.
The only mod I needed to make on the adapter was to bend over two pins 90º, where you place a jumper to set the drive to "master." The adapter plus CF card is actually smaller and thinner than just original 1.8-inch Toshiba hard drive; I used some thin foam packing material (cut to the right shape) to take up the excess space and ensure the adapter and card did not become disconnected.
The 4th gen iPod has excellent sound, compared to some later iPods.

Want to make sure I replace RAID drive correctly.

In my previous post, I mentioned I had a drive go out and now my system will crash whenever I start my G5 while the fibre channel cables are connected. I'm assuming this is because it automatically mounts the Xserve RAID drive. When I disconnect the fibre cables, it starts up fine and I can go into the RAID admin and see the system and administer it.
Today I got my replacement drive. I've been reading a ton but some re-assurance that I'm doing it correctly would be great. If I've read everything correctly, I should be able to just install the new drive without risk but, if I read everything correctly, I will need to go into the RAID admin utilities and select "make drive available for use" and make the new one the backup?
There is something about "unmounting" the RAID first but it's not mounted or connected by the fibre channel at this time. How/should I do something else to disconnect it? Will it continue to crash my machine at restart or how do I connect it and not have it mount?
Help please
Bart

+I should be able to just install the new drive without risk but, if I read everything correctly, I will need to go into the RAID admin utilities and select "make drive available for use" and make the new one the backup?+
Depending on how the RAID sees the disk it may or may not use it right away. Essentially if it suspects it might be part of another RAID it will not use it until you go into RAID Admin and mark it "available for use". Other than that step it should immediately use the new drive to rebuild the RAID.
+There is something about "unmounting" the RAID first but it's not mounted or connected by the fibre channel at this time. How/should I do something else to disconnect it?+
No, that's talking about unmounting it from the desktop - but with your fibre detached you don't have anything to worry about there.
+Will it continue to crash my machine at restart or how do I connect it and not have it mount?+
I would powerdown the Xserve, attach the cables and then reboot it to be safe. But I wouldn't go so far as to restart the XRAID (unless someone else here with more experience suggests that you do).
Assuming the malformed disk was the source of the crashing hopefully everything will return to normal.
Good luck, let us know how it goes!
=Tod

Can, and how do you restore from ipod back to recently replaced hard drive on a pc not mac?

can, and how do you restore music from ipod back to recently repaced harddrive on a pc not mac?

Note: The information below hasn't been updated since early 2013.
Some of the information below has subsequently appeared in a document by turingtest2: Recovering your iTunes library from your iPod or iOS device - https://discussions.apple.com/docs/DOC-3991
Your i-device was not designed for unique storage of your media. It is not a backup device and media transfer was planned with you maintaining a master copy of your media on a computer which is itself properly backed up against loss. Syncing is one way, computer to device, updating the device content to the content on the computer, not updating or restoring content on a computer. The exception is iTunes Store purchases which can be transferred to a computer.
iTunes Store: Transferring purchases from your iOS device or iPod to a computer - http://support.apple.com/kb/HT1848 - only purchases from iTunes Store
For transferring other items from an i-device to a computer you will have to use third party commercial software. Examples (check the web for others; this is not an exhaustive listing, nor do I have any idea if they are any good):
- Expod (free) - http://www.headlightsoft.com/expod/ - Mac, universal for 104.+ (newer machines try de-Tune)
- deTune (free) - http://www.headlightsoft.com/detune/ - Mac, 10.5+
- Senuti - http://www.fadingred.com/senuti/
- Phoneview - http://www.ecamm.com/mac/phoneview/
- MusicRescue - http://www.kennettnet.co.uk/products/musicrescue/
- Sharepod (free) - http://download.cnet.com/SharePod/3000-2141_4-10794489.html?tag=mncol;2 - Windows
- Snowfox/iMedia - http://www.mac-videoconverter.com/imedia-transfer-mac.html - Mac & PC
- iexplorer (free) - http://www.macroplant.com/iexplorer/ - Mac&PC
- Yamipod (free) - http://www.yamipod.com/main/modules/downloads/ - PC, Linux, Mac [Still updated for use on newer devices? No edits to site since 2010.]
- 2010 Post by Zevoneer: iPod media recovery options - https://discussions.apple.com/message/11624224 - this is an older post and many of the links are also for old posts, so bear this in mind when reading them.
Syncing to a "New" Computer or replacing a "crashed" Hard Drive - https://discussions.apple.com/docs/DOC-3141

S.M.A.R.T. status: failed on recently replaced Hard Drive, ***?

S.M.A.R.T. status: failure on my Hard Drive,
does this mean my Hard Drive is going to fry once again? Not sure what this means.
Heres my story:
Bought a brand new 20" iMac with custom 500gb HDD in April 2007 ran like a dream until...
Hiccups, some freezes, then one day I went into dashboard and my comp froze/dumped out on me.
Rebooted to see a flashing "?" icon on a folder (lucky for me iTunes was backed up).
Went to Apple store two weeks ago - Hard Drive failed they said. Needed a week to order part and fix it and you'll be up and running. During this week they managed to scratch the metal stand, mark up my screen with grease and give me much dirtier version of my iMac. Oh well it's fixed I thought I'll clean it at home and no one looks at the backside. I just missed my Mac!
Got home. Cleaned her up and found Airport missing. iSight light always on. Volume/Sound doesn't work at ALL.
Took it back in and checked in my mac for these problems - Picked it back up yesterday and the three problems I had were fixed, wahoo I thought! When I got home last night I started migrating files over from an external HDD happy about computer being operational and noticing the HDD in the mac sounds a little louder than usual... maybe it's just me? - updated iLife, installed some widgets...
... then while in Utilities folder configuring my Airport Base Station I decided to run Disk Utility for whatever reason.
It's reporting that my S.M.A.R.T. status has failed, I'm not really sure what this means but is sounds bad and it told me to replace the Hard Drive.
After being compless for 2 weeks and lots of back and forth I'm pretty aggravated and disappointed with Apple at this point, is my Hard Drive really going to fail, should I take it back in or is it something I did? The Mac is fairly new! Do I have grounds to demand a replacement? ... ya know how bummy you get when your PC isn't working or gone. sigh
Any insight is appreciated!

Take it back, it's still under warranty. Is this an Apple Store or a 3rd party Apple reseller? Ask to speak to the manager, maybe it is to the point Apple will replace the iMac instead of repairing it.

Recently replaced optical drive with SSD and stripped the screw of the hinge on the optical drive. Now speaker is muffled

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What 'hinge ' are you referring to? I am unaware of any hinges on an optical drive.
Look at the iFixit.com website for pictorial instructions that may assist you with your problem.
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Hi
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Is the replacement drive approved to work with the px6?
HDDs and SSDs approved for px4-300d and px6-300d:
https://lenovo-na-en.custhelp.com/app/answers/detail/a_id/26012
If the px device is unable to overwrite the existing data, follow the instructions on Answer ID 30456 to clean the disk, then re-install it in your device.
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Ok, So I replaced the 20gb hard drive with a new EXACT replacement hard drive, no other problems with iPod. But iTunes will not recognize it because the hard drive is not formatted. I tried formating it with Disk Utility but keep getting error messages. Im not sure what format to use. When the 4th gen came out Intel processors werent here so Im sure I need to simply format as Mac OS Extended. There is no HFS= format in Disk Utility. Im lost as to what to do. Please help??!

hmm - curiouser and curiouser
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Is it difficult or advisable to replace the hard drive in my PowerBook myself? Or do I need to bring it into a shop?
I've installed memory in desktop Macs, so I'm comfortable opening a computer. I've never opened a PowerBook, though.

Replacing the hard drive is certainly do-able, but you should be comfortable with the Powerbook innards. Here's directions that you can look over, to make the do-it-yourself or have-someone-else-do-it-for-you decision: http://www.ifixit.com/Guide/Mac/PowerBook-G4-Al-17-Inch/HD-Replacement/55/6/
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Will I lose Raided Drives if I wipe the boot drive?

Hey,
I'm having a couple different issues with my computer, so I'm hoping if I wipe down and zero out the boot drive and reinstall evrything back to the factory settings, some of the issues will be resolved.
I have two 500gb drives in the Mac Pro that are Raided together. I performed the raid through the disc utilities. I am wondering if I erase everything from the boot drive will it be able to reconize the Raid btw the two drives when it is restored, giving me acesss to everything saved on the raid.
Thanks very much!

RAID-ness is an attibute of the Drive, not the Mac, and not the boot drive.
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waiting for your reply
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From http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_detail.php?UID=607
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I've just started a new IT job and inherited an xServe (snow leopard) and xServe RAID
I'm not an expert on either. I've some experience with OS X Server, but I've never been a full on server admin.
One drive is dead. I believe they're 500GB units in the first six bays.
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So, first, where on earth would I buy a replacement?
And assuming that's possible, what are people's suggestions for buying drive modules for the other bays, and replacement parts for the xServe itself (power suppies, etc.).
Thanks!

first of all i don't have experience with proprietary Apple products, but typically i believe you can buy any hard drive so long as the interface is compatible (SATA or SAS for example) and the size is the same. there should not be a need to buy 'special Apple xserve hard drives'. if you buy a drive larger than 500 GB then the extra space beyond 500 GB will just be ignored depending on the type of RAID you have setup. definitely do not buy a disk smaller than 500 GB. pull out the disk that is bad and see what the make/model is. my xserve uses Seagate drives so you could probably just search eBay or whatever for the model number of the drive and use that. the hard drive should be able to be removed from the caddy so you don't really need a whole new "module".
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Drive Cache Disabled on recently replaced RAID drive

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