[Info-vax] Command to show process rms file opens?

[Stephen Hoffman]

On 2020-07-30 17:44:06 +0000, IanD said:

> There's a number of detailed studies of SSD drives versus HDD reliability
> 
> https://www.usenix.org › filesPDF
> A Study of SSD Reliability in Large Scale Enterprise Storage 
> Deployments - Usenix

Direct: https://www.usenix.org/system/files/fast20-maneas.pdf

> 
> There is no definitive answer is one better than the other, horses for 
> courses yet again it seems

Ayup.

All storage can and will inevitably fail, which means backups, RAID for 
access-critical data, and potentially more. HDDs throw EDC-related 
READERROR errors, too.

Wear-monitoring and age on SSD, too, same as tracking hard disk errors.

The I/O performance boost from HDD to SSD is somewhere between 
substantial and massive.

Here's a high-level intro to some of the considerations, for those 
interested: https://www.backblaze.com/blog/how-reliable-are-ssds/

Here are some Google findings from a few years ago:
http://0b4af6cdc2f0c5998459-c0245c5c937c5dedcca3f1764ecc9b2f.r43.cf2.rackcdn.com/23105-fast16-papers-schroeder.pdf 

For the highlights, skip to the summary on page 79; about twelve pages 
in—the paper is not 79 pages long.

"Understanding endurance and performance characteristics of HP solid 
state drives" (old info!)
https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03312456

HPE has an SSD selector tool, as they have a number of 
differently-targeted SSDs...
https://ssd.hpe.com

And just like everything else in computing, there are better-quality 
devices, and there's also junk.

And yes, there are bugs: 
https://www.theregister.com/2020/03/25/hpe_ssd_death_fix/





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