How should I setup New, Stored, and Alert folders?

HeneryH
Posts: 269
Joined: Thu Jul 18, 2019 2:50 pm

Re: How should I setup New, Stored, and Alert folders?

Post by HeneryH » Sun Dec 29, 2019 8:03 pm

I think you are worried about nothing Tim. But have at it.

Disks are made to move the head quickly and the built-in cache can smooth out any short interruptions due to head movement.

When you are writing a large chunk you still can't assume that it is all getting written in one sector due to fragmenting.

MikeBwca
Posts: 391
Joined: Thu Jun 20, 2019 5:39 am

Re: How should I setup New, Stored, and Alert folders?

Post by MikeBwca » Mon Dec 30, 2019 7:09 am

TimG wrote:
Sun Dec 29, 2019 5:01 pm
... recording many different camera video feeds all at the same time to a single mechanical hard drive. The recording head cannot physically be in different places at the same time, so something will give. ...
This is true... for regular hard drives, and especially the OS drive. But, they work exceptionally with normal OS/workflow. It's amazing how much the OS is writing to the OS hd!

And false... The Western Digital Purple, and, Seagate Skyhawk, hard drives are designed with different caching specifically for recording (write operations) up to 64 HD camera stream simultaneously. Use one of these drive types as your recording drive, then using a regular drive for storage (if you do that). I don't. I let the recording live & die on my Skyhawk. I get about 3.5 weeks on my 7 cams. I'll probably get an additional Skyhawk, and split the recording too the two, and double my storage retention.

I'm not criticizing your viewpoint. Mearly stating my own.

I wonder... Are there tests done with write/read comparisons between SSD & the Purple/Skyhawk drives, with 64 HD streams?

wheeler498
Posts: 1
Joined: Sat Feb 22, 2020 1:26 pm

Re: How should I setup New, Stored, and Alert folders?

Post by wheeler498 » Sat Feb 22, 2020 1:36 pm

Would there be any actual performance advantage for recording new to a SSD then transferring to stored on a mechanical drive? I am in the process of upgrading my boot drive and will have a 90gb ssd free to use for something.

User avatar
TimG
Posts: 463
Joined: Tue Jun 18, 2019 10:45 am
Location: Nottinghamshire, UK.

Re: How should I setup New, Stored, and Alert folders?

Post by TimG » Sat Feb 22, 2020 3:08 pm

Hi,

I don't have any performance data, but it makes sense to me to have the "New" folder on a different drive to Windows. My BI SSD was sat in the parts box, so I dropped it in as the "fast drive" required for the database, and moved "New" to it. it all depends on how many cameras you have, and the resolution. if it works, then don't fix it ! If you add just one more camera and it struggles, then it's time to add faster parts. I don't have any performance issues with my server, and it does have a lot of other programs running on it - see info in the footer.
Blue Iris v5.2.4.4 | Win10 Pro x64 | Dahua IPC-HDW5231R-ZE, Foscam R2, Ertech 4MP, 2 analogue cameras on Euresys Picolo Pro 2 | FX-8350 AMD Piledriver CPU, 32GB Ram, Multiple SSD and HD| Homeseer HS3(4) Pro | TVMosaic | Emby | DVBViewer |

MikeBwca
Posts: 391
Joined: Thu Jun 20, 2019 5:39 am

Re: How should I setup New, Stored, and Alert folders?

Post by MikeBwca » Sun Feb 23, 2020 2:51 am

wheeler498 wrote:
Sat Feb 22, 2020 1:36 pm
Would there be any actual performance advantage for recording new to a SSD then transferring to stored on a mechanical drive? I am in the process of upgrading my boot drive and will have a 90gb ssd free to use for something.
I upgraded my boot drive from a mechanical HD to a 2tb Seagate 120. The difference is amazing. Bootups are blazing fast. Programs start much quicker. Still I wouldn't put BI 'New' there. I would think the bottleneck would still be the concurrent writes, but I'm not sure. The Skyhawk & Blue HD's are designed for up to 64 concurrent write streams. Not sure how SSD's would handle this.

It would be interesting to test. I do have a spare 500gig SSD... hmmmmmm

Post Reply