APLawrence.com -  Resources for Unix and Linux Systems, Bloggers and the self-employed
RSS Feeds RSS Feeds











(OLDER) <- More Stuff -> (NEWER) (NEWEST)
Printer Friendly Version
->
-> Granite Digital SMARTVue for Mac OS X


Granite Digital SMARTVue for Mac OS X




Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T) is built into most newer hard drives. S.M.A.R.T records a number of "attributes" that can be reported. These are things like Seek Error Rate, Spin Up Time and more which could help warn of impending difficulties. This predictive and warning function is part of the value for products like Granite Digital's SMARTVue.

S.M.A.R.T of course can't warn you of everything. A power supply could blow without warning, leaving your hard drive dead. But many failures would give plenty of warning before the drive became inaccessible, and that is what SMARTVue can monitor.

Drive failure is much more rare than it used to be, but not so rare that you should assume your drive will never fail. Modern drives are truly amazing, and their Mean Time Between Failures is now a very large number of hours. But while I can expect that very few of my clients will have hard drive failures this year, surely some of them will. You could too.

There's another purpose to SMARTVue: benchmarking and testing. For usrs who need ultimate drive performance (capturing video, etc.), being able to benchmark and compare against another drive or earlier results from the same drive is important. Granite SMARTVue provides tools for that, too.

You can download a free version of SMARTVue from www.granitedigital.com/smartvue/index.htm (link dead, sorry) The free version is has limited functionality, but can be upgraded to the Pro version for $19.95 (or $29.95 for a version with printed manual). At this writing (June 2003), there is only a Mac OS X version; they say they will have a Windows version eventually (a similar product that does have a Windows version is http://www.santools.com/smartmon.html ). See http://smartmontools.sourceforge.net/ for a Linux tool.

Even without this, you can query SMART status on your Mac:

   diskutil info disk0 | grep SMART
   SMART Status:       Verified
 

Attributes

Attributes have a value of 0 to 253. Unless the drive manufacturer has provided you with documentation, you have no way to translate these numbers to anything meaningful. Look at "Power On Hours", for example. My drive has been on a LOT more than 97 hours, so that tells me nothing. Nor do any of the other attributes, except for one thing: the manufacturer also defines a threshold value for the attribute, and as long as the current value is ABOVE the threshold, everything is OK.

This can be confusing when you first look at it: a "Raw Read Error Rate" of 100 looks scary, but that does not mean that there have been 100 errors. For all I know, there may have been no errors of this kind: the only important thing is that it is above the threshold. Reported values and thresholds are manufacturer specific: a different manufacturer might show a threshold of 5 for this value. Again, the actual numbers are only meaningful if you have that information from the manufacturer. Even a change in these values can't readily be interpreted, though certainly if the values were steadily moving toward the threshold I would become concerned. In the current version of SMARTVue, Granite doesn't log attributes so that you could track these values over time, but they did tell me that is a feature they may add later.

SMARTVue checks attribute status as oten as you have told it to and will either pop up a window or send email if any value has fallen below thresholds. Since that may never happen, you can simulate an error to test that is working correctly.

If the threshold value is zero, then there is no comparison to be made: these attributes are informational, but have no problem threshold. So why report them at all? Well, your drive manufacturer might provide you with the actual meaning of the reported values. If you can get that, many of these informational attributes might be interesting to you.

Testing

S.M.A.R.T also may include Self Tests and Error Logs; if these features are present, SMARTVue can show you the logs and let you run the Self Tests. You can also run you own tests, save them, and compare them in the Results Viewer.

The Self Tests generate no output: it's simply OK or not. Your drive may have Short or Extended self tests; mine has only Extended, which took about 28 minutes to run. It doesn't interfere with other computer use though (other than slowing down disk access due to its activity).

SMARTVue's own testing is divided between Benchmarking, which can run either a Sequential File Transfer or try various block sizes, and Drive Testing. The Benchmarking tests can be run on a user file, which can help spot fragmentation issues.

Saving test results isn't in the window where you run the test; go up to the menu bar and choose File to see the ability to save or just move the graph to the Results Viewer. Once you have more than one test saved, you can load multiple tests into the Results viewer and compare them side by side. I found the color differentation a little hard to make out even when comparing two tests, and impossible with more than that. This was a little easier on the Transfer Rate vs. Block Size (which is a bar graph) than on the Sequential Benchmarks.

This is obviously not a utility you'll use every day. It's also true that certain kinds of instantaneous failures will just occur without warning. Still, I like to know that my drive is in good health: I have many gigabytes of important data to protect. Granite Digital's SMARTVue gives me a little more confidence.

Granite Digital Drives

Granite Digital also sells hot swappable drives in cases with LCD's that display S.M.A.R.T status.





If this page was useful to you, please help others find it:  





6 comments




More Articles by - Find me on Google+



Click here to add your comments
- no registration needed!
I am running Panther, and I believe, the full install. The command line:
apl$ diskutil info disk0 | grep SMART
gave me "command not found"

--

Nothing to do with Panther per se: it's your hardware:

Anthony-Lawrences-Computer:~ apl$ diskutil info disk0 | grep SMART
SMART Status: Verified



--TonyLawrence





Thu Oct 13 04:19:32 2005: 1192   anonymous


Just open a OS X Terminal window and type:

diskutil info disk0 | grep SMART

and it works ok. Hopfully it returns the "verified" message.







Thu Oct 13 08:48:55 2005: 1193   TonyLawrence

gravatar
Thanks - I sometimes forget that prompts can confuse people. Of course in other situations, lack of prompts can be confusing too..

I took it out above.



Wed Feb 11 18:51:15 2009: 5368   anonymous
http://imac.ucoz.com
gravatar
I can`t find the smartvue, I search the entire web and seems that this software was deleted for every page where I search.
Pleasse letme know if you know where I can find it. Thanks and sorry about my english :)



Wed Feb 11 19:25:34 2009: 5369   TonyLawrence

gravatar
You don't need it with Leopard. System Profiler, Hardware, Serial-ATA



Wed Feb 11 20:26:07 2009: 5371   anonymous

gravatar
I don`t have Leopard, since I have a couple of G4 (iMac & PowerMac) I use Tiger.
This program looks like what I want for Macs, I use HDTune on wintel PCs.
Thanks for your answer, best regards from Uruguay
Alvaro



Wed Feb 11 20:32:50 2009: 5372   TonyLawrence

gravatar
I'm sorry - I don't have a copy anymore - that was a fair time back!

Don't miss responses! Subscribe to Comments by RSS or by Email

Click here to add your comments


If you want a picture to show with your comment, go get a Gravatar

Kerio Samepage


Have you tried Searching this site?

Unix/Linux/Mac OS X support by phone, email or on-site: Support Rates

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more. We appreciate comments and article submissions.

Publishing your articles here

Jump to Comments



Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.

I am a Kerio reseller. Articles here related to Kerio products reflect my honest opinion, but I do have an obvious interest in selling those products also.

Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.

We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.

pavatar.jpg

This post tagged:

       - Disks/Filesystems
       - Hardware
       - MacOSX
       - Reviews















My Troubleshooting E-Book will show you how to solve tough problems on Linux and Unix systems!


book graphic unix and linux troubleshooting guide



Buy Kerio from a dealer
who knows tech:
I sell and support

Kerio Connect Mail server, Control, Workspace and Operator licenses and subscription renewals



Click and enter your name and phone number to call me about Kerio® products right now (Flash required)