Drive sleds

[h9826790]

Just found the reason of unable to read SMART in macOS. It's nothing to do with 10.13.6, but iStat (Quote from DriveDx troubleshooting webpage)

After I de-select SMART monitoring in iStat, all other softwares can read the life remaining properly.

 

[verdejt]

Here is a screenshot of my hardware monitor.

 

[flowrider]

OK, Confusion reins. Hardware Monitor and HWMonitor are not the same product. HWMonitor, from what I can glean, is a wondoz only product. Hardware Monitor is a Mac product, no longer in development. Hardware Monitor does not show SSD remaining life. Thanks to h9826790 for showing how to activate SMART Status and for finding DriveDX. I was somewhat surprised to see that the utility also shows the SSD Lifetime Left Indicator for "external" drives on a PCIe card as well as "internal" drives mounted in the HD bays.

Lou

 

[AidenShaw]

OK, Confusion reins.

And you're not really helping to reduce it.

The "life remaining" stat is anything but reliable. It's not unusual for a drive to run fine with a "life remaining" of -100% or more. Vendors use a conservative rating for lifetime writes - most drives don't simply fail at a particular TiB value. TRIM and write patterns can mean that a simplistic "lifetime write TB" number is only a worst-case estimate. (And a very safe number for the warranty text. If you bought a car with a 4 year warranty - would you expect it to fail 1461 days after you bought it?)

In addition, the SSD specs say that a drive if fails due to flash failures it should write-lock itself and continue to operate read-only. You're scrod if it's your system drive unless you can boot from a recovery environment. And probably scrod if it's a member of a RAID array.

​

In other words, be sure that you have good backups and a strategy as life approaches 0%. Don't worry when it's at 50%.

And, of course, the drive could fail at 100% life remaining, so always have good backups and a strategy.

 

[flowrider]

And you're not really helping to reduce it.

I beg your pardon!!!!!!!!!!!

I wasn't posting about the accuracy or lack of it concerning the results shown by various software. I never said those results were accurate to inaccurate. I was simply pointing out the issues with the naming of two software programs. I also thanked a member of this forum who posted on how to show results related to SMART!

I took your post with a grain of salt. Salt tastes terrible😱

BTW, I used to live on the East Coast, Legal Sea Foods is a place too stay away from.

Lou

 

[AidenShaw]

BTW, I used to live on the East Coast, Legal Sea Foods is a place too stay away from.

YMMV

 

[verdejt]

Ok I think I found what is confusing you and now I. The program says HWMonitor but it's actually HWSensors. Here is the link on source forge. https://sourceforge.net/projects/hwsensors/

 

[flowrider]

^^^^Actually, it was you who was confusing me.

You call the program You call the program

hardware monitor.

Thanks for the clarification.

Lou

 

[verdejt]

I went by what was on the pulldown (see my earlier screenshot). Once you load HWSensors it shows as HWMonitor.

 

[verdejt]

Sorry for the late response. I had a personal appearance this weekend, so I was hella busy.

Repetier-host is the windows software to print the CAD items. I'm not sure if there's a Mac version, but since all modern apple laptops run Windows 7/10 it shouldn't be an issue.

Here are links to the CAD files for the sleds and adapters:
4,1/5,1 sled: https://www.thingiverse.com/thing:2759563
1,1/3,1 sled: https://www.thingiverse.com/thing:2771531
SSD adapter: https://www.thingiverse.com/thing:1630550
Those CAD files are for 60% fill, but Repetier-host can increase the fill to 100%.

Here's a partial video printing a drive sled:

Here are a few photos of printing in progress, and finished product:

Thanks for tip. I had the fabrication lab at my school use the template you posted and Poof I have the 2 missing drive sleds I was going to purchase. Best part the printer both of them for me as a favor so it cost me nothing. So Awesome. Thanks again.

 

[tsialex]

Thanks for tip. I had the fabrication lab at my school use the template you posted and Poof I have the 2 missing drive sleds I was going to purchase. Best part the printer both of them for me as a favor so it cost me nothing. So Awesome. Thanks again.

Could you please post pictures of the printed sleds, I'd like a lot to see them.

 

[Zeke D]

I also printed a 3.5” to 2.5” adapter for my iMac:

I don’t have a photo, because it’s in a unit I sold, but I’ve made an adapter similar to the iMac with flat sides that allows me to mount an SSD in a bay, but use data from a PCIe SATA-III card, and drawing power from the bay SATA connector.

Could you please post pictures of the printed sleds, I'd like a lot to see them.

 

[Zeke D]

Excellent! The good news is that the cost of PLA filiment is about $2.00. If you double that for the electricity for the two hours of actual electricity, really, the only cost is time. Plus, you can print a bunch, and not worry about losing one since the per unit cost is so low.

Thanks for tip. I had the fabrication lab at my school use the template you posted and Poof I have the 2 missing drive sleds I was going to purchase. Best part the printer both of them for me as a favor so it cost me nothing. So Awesome. Thanks again.

 

[Zeke D]

Printing two at once.

 

[Zeke D]

I recommend against printing two at once. I suspect that the table didn't have a uniform temperature, and the sleds aren't as good as the ones I printed solo.

 

[verdejt]

Also don't try to print them vertically as there isn't enough support when it gets more than 1/4 of the way up. We tried it just we wouldn't have to removed the "supports"