SHOULD system drives be allowed to sleep?

In this case, I'm not as interested in saving energy as I am in prolonging the life of my internal hard drives.
Is it safe... should system hard drives be allowed to sleep?
Or, is it better that they don't repeatedly sleep and wake?
I'd appreciate replies that are more than speculative.
Thanks!

I just got off the phone with Seagate, since I have a recent Seagate drive I installed about a year ago. How much of this will apply to a G4 drive, if it's original, I'm not sure. Seagate told me that the sleep wake issue for wear and tear is, at this point, irrelevant, since the drive will sleep itself (I guess park the head) whenever it can.
As for heat, Seagate, at least, doesn't think there's any problem until it gets to around 60 C. Temp Monitor could probably check that for you. I wouldn't want to let it get anywhere near that, myself.
Use this information as a kind of rough guide, but you could call the manufacturer of your drive to see what they think about temperature guidelines. And here's a discussion- if you can deal with the length- on HDD temperature.
http://www.codinghorror.com/blog/archives/000748.html
*And I would give much weight to BDAqua's replies, as they are based on considerable real life experience.*

Similar Messages

System drive crashed...

My system drive crashed earlier this week but thank God I had a Time Machine back up to refer to when I installed a clean version of Leopard on the brand new drive. What I am slowly learning is that some of my apps are not working now. For example Aperture keeps force closing on start up other apps are requiring me to re-register or I have to download a certain item for it to run again! What purpose is the TM backup if you have to go through that hassle? Also my screen seems to have dead pixels which are annoying me big time! I never had those issues prior to the HD crashing. Everytime I click on something on screen, it leaves a small square mark on the screen until I scroll or refresh the screen it will leave. I unplugged the monitor and plugged it back in. I checked the display settings and that all checked out fine. I just want my computer back to how I had it and was hoping that was the whole reason for the Time Machine backups but I guess wrong.

DVX100Shooter wrote:
Maybe there is a way to set up Time Machine to do what I want but I never could figure it out. When I set up it originally, it was constantly backing my system up which is what we all want it to do. My issue with that is I noticed when I was not using my computer, it would not sleep because of the TM doing its job. So that is why I stopped the backups in early October. I was hoping to do backups once or twice a week but it seems like its constantly backing up.
It sounds like you have problems with your system.
Time Machine backups shouldn't run constantly, or for very long (after the first full backup). If they do, it's an indication of a problem.
And the problem with your screen is another indication, likely of hardware problems.
I did install Leopard from the disc but can't remember if I ran repair permissions after it was installed. I couldn't see my screen during the install process for some reason. I could see it but it was hard to read. Once the install was complete, then the Leopard animated video played crystal clear. There's a chance I clicked on something I shouldn't have due to not being able to read the screen good.
The fact that the welcome video played means you did an +Erase and Install.+ That did just what it says: it erased the entire contents of your system, and installed Leopard.
If you then transferred/copied/restored things from your backups, that's why you now have the 2009 version of everything.
So with all that said, what is the best option right now?
First, what version of Leopard are you now on? If your Install disc wasn't 10.5.8, and you haven't run Software Update, download and instal the "combo" update. That's the cleverly-named combination of all the updates to Leopard since it was first released, so installing it should fix anything that's gone wrong since then, such as with one of the normal "point" updates. Info and download available at: http://support.apple.com/downloads/MacOS_X_10_5_8_ComboUpdate
Whether you do that or not, run a +Repair Permissions+ via Disk Utility (in your Applications/Utilities folder).
Then run the +Apple Hardware Test,+ either:
[Intel-based Macs: Using Apple Hardware Test|http://support.apple.com/kb/HT1509].
or if it's a PPC Mac, it's on one of the disc(s) that came with your Mac, and is tailored to it's particular hardware. The disk should have +Apple Hardware Test+ and instructions for running it printed in very tiny type.
If that shows hardware problems, take it to Apple.
And do regular backups. If they run for very long when you haven't changed much, see #D4 in [Time Machine - Troubleshooting|http://web.me.com/pondini/Time_Machine/Troubleshooting.html] (or use the link in *User Tips* at the top of this forum). If they seem too slow, see #D2 there.

System crashes when put to sleep or restart

My system crashes when put to sleep or when I click re-start. This also happens when applications start and need to take over the entire screen. Once it crashes, I cannot start the computer for approx 5 minutes. I cannot re-start in safe mode because it also crashes. I cannot start with the application disc because the dvd drive pops open when I start the system. I have tried shutting the system down from the menu bar and the screen exits to the desktop window, but doesn't shut off. I have used disc utility to repair permissions and have re-set the pram, but the problem remains. I have a G4 gigabit/ethernet, running OSX 10.4.11, with an Apple Studio Display and ATI Radeon 9000 Pro graphics card. This has been going on for a while - I am not sure if it started when I installed OSX tiger or when I added two new ram memory chips (I have four added, 2 512 SDRAMM and 2 128 SDRAMM). Please advise. Thank you.

I am not sure if it started when I installed OSX tiger or when I added two new ram memory chips (I have four added, 2 512 SDRAMM and 2 128 SDRAMM).
The absolute first step in troubleshooting is to remove the recently added RAM.
That will remove question regarding the RAM.
Have you tried a Safe Mode boot (hold Shift while booting)?
This will allow for automatic system repairs. While in safe mode, does the sleep function work?
From Safe mode, does the restart function work?
If after removing the RAM, and after Safe mode, the problem persists, a PMU reset may be worth trying.
The PMU controls all power functions, sleep and shut down and start. Corruption in the PMU will cause problems with these functions, and a reset will clear this up if the PMU is the root cause.
http://docs.info.apple.com/article.html?artnum=86760

I no longer have access to system folders that allow me to remove old or incorrect PAGES templates. Need to find out how to do that. The only way I can do it now is to blank the template and replace the bad template with a blank.

I no longer have access to system folders that allow me to remove old or incorrect PAGES templates. Need to find out how to do that. The only way I can do it now is to blank the template and replace the unwanted template with a blank. It was previously possible to go to MY TEMPLATES and remove the unwanted templates. I don't if this issue is before or since installation of 10.8 (a nightmare in my case, which led to significant failure issues). And because I haven't tried to remove templates since finally managing to install 10.8 (now at 10.8.4), I don't know if this is typical of the newer OS or a problem. I've been a Mac user for more than 25 years, but I think I'm nearing the end of the road. By the way, I've never needed to do this before because the manuals always offered an answer... they don't seem to do that anymore. In any case, I don't know how this works... I'd prefer an email reply if that's possible. But that would probably be too easy, and I don't know how to get a reply.

Thanks, I appreciate the help. I think this is one of the problems Apple is creating by changing the OS so often. I had fomer colleagues at [a major aerospace contractor] who told me that so many original files were ultimately lost because of the deadly change in the "Save As" operation that they are now afraid of every OS update. Apple has badly damaged their support base with that very prominent company (they won't update now until they've fully examined and understand changes in the pre-conditioned nature of OS computer functions), and they are a whole lot less enthaled with Mac-related equipment/software. Can't blame them, I too used orginal files that way (as easy-to-use templates), and lost some important files before I realized what was happening (to late to revert). Companies should not have to retrain employees each time an OS gets an update, it's can be very expensive several different ways. They learned a painful lesson with that one. And because I'm now retired and don't use multiple devices, I need iCloud like I need a hole in the head... but I'm told there's no way to keep Apple out of my computer. Fortunately, because of major problems when initially installing Mountain Lion, one hold-over of the hardware/software damage I experienced was that iCloud can no longer access my computer even though everything else is working fine again. That was the only "good luck" I had as a result of that expensive nightmare.

What are the requirements in terms of system drive for visual studio 2013

According to this thread "visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2120283-allow-users-to-install-entirely-to-another-hard-dr" it is not possible to install visual studio fully on another drive rather that
the system drive. This link "visualstudio.com/products/visual-studio-professional-with-msdn-vs#Fragment_SystemRequirements" states the system requirement for visual studio pro 2013. However can somebody clarify what is needed in terms of system drive
requirement e.g. out of the 20 gb, how much is needed on the system drive.
Thanks

Hi,
Exact space required will vary widely based on installation components chosen and what you may have already installed on your system.
And When you install your VS in another Drive and run the VS installer, you can see system requirement in installation screen.
Because my work computer only have C Drive, I test the VS2012 professional installation in my home computer E drive. The Screen below:
I think the system requirement can also display when you install VS 2013.
Best Wishes!
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Do I need a fast system drive if i also have a RAID 0 array for media?

If my video and media files are all on a Fast RAID array then do i need a fast system drive?
Im building a system. The only thing on my system drive will be programs. And I will have a RAID array for my video and PSD files - but my System drive is an older UltraDMA EIDE133 250g Maxtor. This system drive is testing at 51mb/s Read, and 26mb/s write. (According to Blackmagic disk speed check program)
A New SATA drive tests at 53 write and 43 read. So should i bother upgrading my system drive to a RAPTOR 150 or stick with the older EIDE drive? Main Programs i use are Adobe After effects, premiere pro, Photoshop for uncompressed editing with blackmagic intensity.
Specs:
MB: Tyan K8WE
AMD Opteron 270 (dual)
4GB RAM.
Nvidia Quadro FX 560
Apple cinema Display 30'
4x500gb RAID array (2TB total) on Nvidia SATA motherboard controler.

Jeron,
Yes, you are probably.
- Its i either spend $900 dollars or $200.
The best possible Rig is this; I spend $500 dollars on a dedicated PCI-X RAID controller card. I buy a Raptor 150g system drive $200. And then buying another 3 drives to add to the RAID array of 2 disks i already have = $300.
Or option 2: My motherboard (K8WE) has 4 SATA-II ports. So I could set up a 4 disk raid with what i have right now and be achieving 210+ mb/s read and write. My system drive would be off the IDE/133 channel. Then i would only have to spend $200 on 2 disks.
I have been trying to decipher if it is logical to spend that much more money - when it is possible i will only achieve maybe 50 more Megabytes a second. - and have windows and programs start faster.
A part of me says - "any time i try to save money on something it comes with calamity and disaster". vs. a part of me that says - "you could get more bang for your buck".

System does not allow to void the payment on same day

Dear All,
System does not allow to void the payment on same day in R12. e.g. If payment is made on 18-NOV-2010, system does not allow to void on 18th. We can void payments if void date is greater than payment date.
Please let me know if you have any information to void payments on same day.
Thanks in Adavnce.
Thanks,
Astik

Hello Victor,
the data collection method CCMS_OS_COLLECT is an ABAP report as you can see in the method overview in rz21. This report is used to collect the operating system data and send it to the CCMS.
As soon as you install the sapccm4x agent on an instance the agent will take over the data collection for the operating system subtree (this is also described in [note 522453 |http://service.sap.com/sap/support/notes/522453]. Important: point 4. of the note!). I.e. as soon as the agent is responsible for the data collection you will see the mentioned CCMS_Cpu_Collect_c.
If the MTE doesn't display data you should check if the agent is running.
Regards, Michael

Why is it that when i trash files from my system drive it asks for my permission but doesn't show up in the trash bin?

Hey guys, need help.
I've been trying to figure out why everytime i delete files from my system drive, it doesnt show up in my trash bin.
Has anyone encountered the same issue?
Would appreciate any help guys.
Thanks.

1. Triple-click the line below to select it:
~/.Trash
2. Right-click or control-click the highlighted line and select
Services ▹ Show Info
from the contextual menu.* An Info dialog should open.
3. The dialog should show "You can read and write" in the Sharing & Permissions section. If that's not what it shows, click the padlock icon in the lower right corner of the window and enter your password when prompted. Use the plus- and minus-sign buttons to give yourself Read & Write access and "everyone" No Access. Delete any other entries in the access list.
4. In the General section, uncheck the box marked Locked if it's checked.
5. From the action menu (gear icon) at the bottom of the dialog, select Apply to enclosed items and confirm.
6. Close the Info window and test.
*If you don't see the contextual menu item, copy the selected text to the Clipboard (command-C). Open a TextEdit window and paste into it (command-V). Select the line you just pasted and continue as above.

LaCie 6TB drive ejects when Air sleeps: I use two 6TB LaCie drives - home and office with my Air, which travels with me. Only have a problem with one. Is there a fix?

LaCie 6TB drive ejects when Air sleeps: I use two 6TB LaCie drives - home and office with my Air, which travels with me between the locations. Only have a problem with one that inappropriately ejects when the Air sleeps (and only sometimes). Is there a fix? I've read others who believe that the problem is with the operating system (I'm using 10.9.2). But my problem suggests that it's with one of the LaCie's. Any suggestions about how to fix?

Lacie doesnt make HD, thats a Seagate inside the box.
Is there a fix?
Yes, get a 4TB max HD, 6TB drives are both new and have known issues, ...in fact so do most all 4TB drives.
my problem suggests that it's with one of the LaCie's
You mean Seagate
Large external hard drives are great! Large external hard drives are horrible
It is a common premise that people are overjoyed at the dropping prices per terabyte on external hard drives, and the first thing that enters most peoples minds is "great, I can put all my stuff on one drive,... all of it!" However considerations need to be made in creating a giant single choke point for not mere data loss, but seriously large data loss. If there is at the very least yet another redundant copy, this is fine, otherwise do not consider it whatsoever. Some 3TB and 4TB drives of all mfg. have, at the time of this writing, reliability concerns currently and best recommendation is staying at 2TB drives or less.
Advantages and disadvantages of larger 3TB and 4TB external drives must be weighed

Setting up a RAID of system drives

hello everyone,
I am looking to add a second system drive for more hd space. I was planning on purchasing a second Raptor and setting up a RAID 0. will I need to format my existing drive, or can I just plug in the new drive and set up my RAID in DU?
...any feedback appreciated, thanks.
Dual-core PwrPC 2.0ghz G5 2mb RAM Mac OS X (10.4.6)

Ok,
You already have a Raptor as boot, most likely it's a 36 or 74GB with 8 MB cache and it's hooked up to your internal SATA ports.
To create a RAID O, you must match the two drives exactly. Erase w/Zero both of them, create the RAID O set in Disk utility and clone your boot drive back from a booted external drive using cloning software. (meaning you have to first clone the original to a external then boot from it and clone to the RAID O)
Problem: Western Digital has updated all their drives with a new SATA spec, also increased the cache to 16 MB. The PowerMac's can't handle the new SATA spec (supposedly the Quad can, but I'm hearing mixed stories)
So unless you find a 8MB cache Raptor, your going to need to spend more money.
The solution if your determined to have RAID O Raptors, is to buy two of them, preferably the new 10,000 RPM 16MB cache 150GB ones, and a Firmteck SATA PCI card (the only one that's bootable off of) with 4 internal SATA ports and 4 external ports. Then hook the internal Raptors to that.
The Firmteck card will also give you the option of hooking up external SATA drives in a powered enclosure, one cable to each drive. So you can expand if you wish.
With a RAID O, you must clone (for a whole boot drive) or backup (for files) quite regularly, like at least once a week for clone and daily backup for files. Since one should be doing this anyway, it's really no big deal. Because like the other poster said, RAID O is a bit more risky, one drive goes you lose all data as the data path is split. But the speed is worth it. So with a pair of 150GB Raptors your going to need a 250-300GB drive external Firewire 800/400 drive.
Now to keep a drives performance up, you shouldn't fill it more than 50%, and certainly shouldn't fill a boot drive more than 80%. So one can use a 250GB external drive for clone backup as long as the data on the 300GB RAID O doesn't go over around 240GB. (80%) Get it?
LaCie makes a good Firewire 800/400/USB d2 drive.
However if this is a bit too much to bear on your wallet, then what you can do is reduce what you have on the boot Raptor below 50% by moving just what you have in documents, pictures, movies and audio files into NEW folders on a second internal SATA drive (preferably one with 16MB cache not from Western Digital)
Once you have slimmed up your Raptor, then clone the whole drive to a external drive, option boot from it and make sure everything works correctly, repair permissions and test all software (some copy protected ones will need to be fixed). Once your are 100% certain it's ok, then Erase w/Zero the Raptor and clone the whole drive back.
What this will do is optimize the Raptor boot drive drive, free up disk space, de-fragment large files/apps and sort of tighten everything up to the most fastest part of your boot drive, the outer tracks, in the good part of the 50% side of your drive. (vs the inner tracks where performance starts to suffer)
Without the space hogging files that are now on the second SATA drive, your drive freshly optimized, the arm in the hard drive has less space to travel to get your data that Mac OS X, apps and random music files iTunes needs to constantly access.
Now I suggest using Carbon Copy Cloner to do your optimizations with, because I know how this program clones drives, in alphabetical order on the main directory of your boot drive. So Applications, Developer (if you have installed Developers Tools from Tiger install disk) Library, System and finally Users at the end (where it could expand without de-optimizing your drive)
Always follow these rules when cloning.
1: Don't run or do anything else while a cloning process is going on.
2: Always Disk utility Erase w/Zero option all new drives one time or in the case of a security issue.
3: Option boot from the clone and check it out.
4: Repair permissions BEFORE and AFTER each cloning.
5: Avoid partial clones because of copy protection schemes hiding files on the drive.
6: Avoid cloning to partitions, especially on the same drive, because if the drive fails mechanically your screwed out of your clone as well. Keep it a boot clone to a boot clone on a separate drive.
7: If you can keep two clones of your boot drive, just in case you get hacked or have a exploit, because when you hook up the second clone, it will get owned too and possibly erased. If this happens, C boot off the installer disk (write protected) and Erase w/Zero all infected drives and disconnect from the internet/network before hooking up that last clone.
I wrote a book, I hope it helps.
Note to others: Firmteck SATA PCI card will not work in PCI-Expressed based PowerMac's.
http://www.amug.org/amug-web/html/amug/reviews/articles/firmtek/1eve4/

Sudo chown + chmod on system drive?

Hello,
Before I mess my system drive up I wanted to check if this is ok.
For various reasons I have created a new Account that I wish to migrate to. I log in ok and can change permissions but there seem to be files on various places that I keep having to set permissions for and wish to resolve this for the whole drive.
What I want is a way to set permissions on all non system files to add admin access as it appears it is not there for certain files
I found the below commands which worked on my media drive but am reluctant to run it on the system drive:
sudo chflags 0 /Volumes/System
sudo chown 0:80 /Volumes/System
sudo chmod 775 /Volumes/System
sudo chmod -N /Volumes/System
I think the one above should have the "R" in as below to do this recursivly ?
sudo chmod -RN /Volumes/System
I don't want to mess up the system drive so I thought I should check if this is ok or not. I think some system files need to be read only so I need to know if this will render the drive useless(I do have a full backup).
I also see people recomend Batchmod but am again unsure if this will work or what settings to use?

Thanks Niel,
I have read numorous posts from yourself and V.K. relating to locked secondary drives but nothing relating to system drives and fully expected that answer. can I bother you a bit more please?
Can I safly run those commands on some of these folders?
system\users\olduseraccount
System\library\application support
System\library\audio
I think that would solve most issues there are hundreds of folders with presets from plugins that have installed with only my old account as read write not admins?
Thanks again Niel
Ross

External Firewire as Main System Drive...

anyone have any comments on using an external Firewire drive as your main system drive? the stock 80GB internal drive in my mini is filling up at an incredible rate, actually had to offload my entire iTunes library just to clear some space, so i was thinking of using my 200GB Maxtor as my main system drive. any doing this? seeing any performance benefits and/or problems? thanks for any info.

from what I've heard from many articles re: MacMini before buying one for my GF, booting from an external FW drive (provided it's 7200+ RPM) you should notice a dramatic difference in performance.
place your install disc in the optical drive restart holding "C".
select the FW drive and use the Archive and Install option from your advanced tab before commiting to the install.
you keep your info on the drive and you get a faster machine!
if you decide to use the built-in drive to boot from make sure that you "re-bless" the internal drive from system preferences or you'll encounter an error screen the first time you try to boot with out the FW drive attached.
have fun with your faster mini!

How do I tell Win7 that the D (not system drive) is where my documents are?

I re-partitoned my disk. I now have one disk of 160 GB (C drive) where the System installed and where I plan to load applications/programs and one disk of 250 GB (D drive) where I plan to store my data.
But by default, the Users Directory is on the C drive, but all my data is on the D drive,. This impacts Library and a number of prgrams
Is there a way to tell the system that my default data is stored on the D drive?

Hi,
The programe should be installed in the system drive in order to work normally, the default location can not be changed, I am afraid.
By changing the default location of the user profile directories or program data folders to a volume other than the system volume, you cannot service your Windows installation. Any updates, fixes, or service packs cannot be applied to the installation.
We recommend that you do not change the location of the user profile directories or program data folders.
Using the ProgramData setting to redirect folders to a drive other than the system volume will block your ability to upgrade to future versions of Windows.
As it is said this this article:
http://support.microsoft.com/kb/949977/en-us
Wade Liu
TechNet Community Support

System does not allow to me to change collect method in RZ20

Hi.
I Have the problem with my SAP R/3.
I have productive, based on 4 application servers. In RZ20, alerts of MTE Operating System for one application server is not work. In nodes properties I have collect method "CCMS_Cpu_Collect_c". On other application servers - "CCMS_OS_Collect". System does not allow to me to change collect method
What will I do? Please help me.
Edited by: Viktor Unsub on Jul 18, 2008 4:55 PM

Hello Victor,
the data collection method CCMS_OS_COLLECT is an ABAP report as you can see in the method overview in rz21. This report is used to collect the operating system data and send it to the CCMS.
As soon as you install the sapccm4x agent on an instance the agent will take over the data collection for the operating system subtree (this is also described in [note 522453 |http://service.sap.com/sap/support/notes/522453]. Important: point 4. of the note!). I.e. as soon as the agent is responsible for the data collection you will see the mentioned CCMS_Cpu_Collect_c.
If the MTE doesn't display data you should check if the agent is running.
Regards, Michael

External SSD HD as system drive

So I have a mid 2010 27" iMac, and I would like to improve the performance a bit.
One option is to replace my HD with an SSD, but I do not want to go through the trouble of opening up the computer. I know I can install a FireWire 800 SSD externally, clone my system drive, and boot from that.
My questions are as follows:
Is the performance of FireWire 800 fast enough to produce a significant improvement in HD performance?
How much slower (if at all) would it be than if I installed it internally?
Are there any weird issues with running OSX off an external FireWire drive, that I should know about?
Thanks in advance for any help you all can provide

David,
From Apple:
Logic Express 9 - User Manual
FireWire 800 FireWire 800 , also called IEEE 1394b, is the next generation of FireWire after IEEE 1394a, a higher-bandwidth version capable of data transferspeeds of up to 800 Mbps. FireWire 800 is also capable of supporting cable distances of up to 100 meters.
http://manuals.info.apple.com/en_US/Logic_Express_9_User_Manual.pdf

SHOULD system drives be allowed to sleep?

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