Re: Disk reliability - and swap out`

2021-08-11 Thread Nico Kadel-Garcia
On Tue, Aug 10, 2021 at 7:00 PM Konstantin Olchanski wrote: > > On Tue, Aug 10, 2021 at 03:34:00PM -0700, Yasha Karant wrote: > > One SSD had an internal short and turned into a space heater, > > luckily there was no fire. End excerpt. > > > > Clearly, there is very poor safety engineering and/or

Re: Disk reliability - and swap out`

2021-08-10 Thread Yasha Karant
Not all locations are as strict as BC, and below 50V (DC as well?) can cause fires, etc. -- those pesky Li battery issues that you may recall. My reference to power supplies was to all power supplies that have a risk of "high" temperature, fire, or explosion. On 8/10/21 4:43 PM, Konstantin

Re: Disk reliability - and swap out`

2021-08-10 Thread Konstantin Olchanski
In the Province of British Columbia, AC-side electrical equipment is designed by registered Professional Engineers (PE) and worked on by licensed electricians. At TRIUMF these people are better than average. Equipment we have built for SNOLAB and CERN was certified by an outside licensed

Re: Disk reliability - and swap out`

2021-08-10 Thread Yasha Karant
A proper circuit breaker, hopefully with external or simple panel removal access (not remove from rack, open chassis, remove ... ), will work fine and typically is better than a fuse. A "soldered in place" fusible link also will work, but is much more difficult to service and replace. Anyone

Re: Disk reliability - and swap out`

2021-08-10 Thread Konstantin Olchanski
On Tue, Aug 10, 2021 at 03:34:00PM -0700, Yasha Karant wrote: > One SSD had an internal short and turned into a space heater, > luckily there was no fire. End excerpt. > > Clearly, there is very poor safety engineering and/or quality > control you will not be amused to learn how many electronics

Re: Disk reliability - and swap out`

2021-08-10 Thread Yasha Karant
One SSD had an internal short and turned into a space heater, luckily there was no fire. End excerpt. Clearly, there is very poor safety engineering and/or quality control (as with certain Li batteries that did similar things in personal devices being operated by the user). If that SSD had

Re: Disk reliability - and swap out`

2021-08-10 Thread Konstantin Olchanski
Hi, Larry, thank you for this information, it is always good to see how other people do things. I am surprised at how little storage you have, only a handful of TBs. Here, for each experiment data acquisition station, we now configure 2x1TB SSD for os, home dirs, apps, etc and 2x8-10-12TB HDD

Disk reliability - and swap out`

2021-08-10 Thread Larry Linder
There are 25 systems in our shop, all linux based, a linux based server, and synology Disk Station running raid 1. The Disk Station has 12 TB of space. 6 TB per for each raid level. We buy only one brand of disk with the black label. They are typically 1 TB. User boxes has a SSD drive for