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Gremlins strike my HDW5231R-ZR Cameras

Gadget -X

Gadget -X

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Gremlins have struck 6 of my 9 HDW5231R-ZE cameras. I check the SD cards once a month just as a pre-caution. When I checked them only 3 showed they had SD cards in them. I immediately checked the physical SD cards and they are in-place. I tried unplugging and replugging cameras which show no SD cards and still nothing. I tried setting back to default and still no glory. Before I go and take the cameras apart again to see if I can format and access the physical SD cards I wanted to check and see if anyone had this kind of issue before. I downloaded video from one that showed it had an SD card and all is well. These 6 cameras have worked solid for 8 months up till this months check.

Good Grief !!

M
 
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pozzello

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right. probably conterfit SD cards that don't have the advertised capacity.
once the cam writes out beyond the real size, it's basically broken.

pull one of the cards and test using some sort of storage tester that writes to reads from the card (takes some time depending on how big the card is).
I've used H2testw in the past, but there are others...
4 Tools to Test and Detect Fake or Counterfeit USB Flash Drives • Raymond.CC
 
Gadget -X

Gadget -X

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They worked fine for 6 months. They are not fake. Purchased from an authorized Sandisk Dealer. I am going to remove one tonight and put a spare in the camera. Will repost back. Tonight.

M
 
Gadget -X

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Hey Fenderman. They are all Sandisk 128GB Ultras and they are continually writing, They last abut 3 1/2 days before they start deleting. All purchased in April 2018. I had Ultra in my previous Vivoteks and they continually wrote for 6 years with out issue.

M
 
Gadget -X

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I just verified and the SD card is INOP. I replaced it with a spare and it is clicking along just fine. The INOP card does not come up in Disk Utility. Something seems real peculiar about 7 of 11 cards I purchased on May 14, 2018 go bad within a few days... Gremlins !!

We will see what Sandisk has to say. They have always taken good care of me.

M
 
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pozzello

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that is odd. do you get much lightning where you live?
 
Gadget -X

Gadget -X

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Nope no lightning, have not even had power go out this year.

M
 
Gadget -X

Gadget -X

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Thanks for the reply and link. Wow I can say I was a naive about the life of SD cards. I think that was because I had used the Ultra in my vivotek cameras without failure for 6 years. Being much lower resolution they never showed any signs of failure. The new Dahua cameras I have are much higher resolution. Is there a good study that any members know about for Micro SD 128GB cards in modern day high resolution security cameras? I found some info on dash cam type saying the Samsung Endurance was good, most said the Tanscend High Endurance was the best (at more than 2 times the price).

Live and learn !! Thank you !

M
 
fenderman

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Gadget -X said:
Thanks for the reply and link. Wow I can say I was a naive about the life of SD cards. I think that was because I had used the Ultra in my vivotek cameras without failure for 6 years. Being much lower resolution they never showed any signs of failure. The new Dahua cameras I have are much higher resolution. Is there a good study that any members know about for Micro SD 128GB cards in modern day high resolution security cameras? I found some info on dash cam type saying the Samsung Endurance was good, most said the Tanscend High Endurance was the best (at more than 2 times the price).

Live and learn !! Thank you !

M
Click to expand...
remember its not the resolution but the bitrate.
 
Gadget -X

Gadget -X

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Thanks FenderMan. What bitrate would you suggest for recording to SD card?

M
 
Gadget -X

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Well long story short. Sandisk will not cover any SD Ultra used in a security Camera, voids warranty. Wants me to buy their high endurance, but it only comes in 64GB. Go figure it would have to work twice as hard... :). Think I settled in on Tangent's recommendation Samsung Endurance. Probably going to buy directly from them as the price is the same. Studying the "Limited" 5 year warranty.

M
 
Rksgrd

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They all want you to buy the endurance versions. People have reported good luck in the dashcam forums with the A1 marked non-endurance Sandisk cards.
 
Gadget -X

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Well I can report 6 of 9 failures with the ones that have A1 marked. :)

M

Scan 6.jpeg
 
tangent

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Some reading:
MacOS X - Flash Tester
Dahua best microSD cards - suggestions?
DS-2CD2542FWD-IWS just stopped recording to SD card - can't figure out why?

nayr said:
digging up 6mo old threads huh? ok i'll bite.

Ive got stacks of dead flash chips, Samsung Pro's are giving me the best results lately.. often hear advice in reviews: this card is too fast for older devices, ignore that nonsence.. your going for the higher quality flash memory and the better seek and random speeds are well within your devices capability to utilize.

SanDisks give me the most Grief.. but then again I run most of these in embedded micro controllers with more random write loads than a camera will have
Click to expand...
 
J Sigmo

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There's still a place for battery backed CMOS RAM these days. Even the best flash has a limited write life. The industrial controllers I often use have battery backed RAM for persistent variables and various flags, Flash for program storage, and volatile RAM for operation. The newer ones use small (coin-cell sized) rechargeable lithium-ion batteries to support the CMOS RAM, and you get around 1 year of retention time during power failures (that's a LONG power failure) and the batteries themselves last around 7 years. I know it would add cost, but if these cameras are going to hammer the flash memory that hard, perhaps they should offer a BBRAM option for, perhaps, $20 more per camera.
 
fenderman

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J Sigmo said:
There's still a place for battery backed CMOS RAM these days. Even the best flash has a limited write life. The industrial controllers I often use have battery backed RAM for persistent variables and various flags, Flash for program storage, and volatile RAM for operation. The newer ones use small (coin-cell sized) rechargeable lithium-ion batteries to support the CMOS RAM, and you get around 1 year of retention time during power failures (that's a LONG power failure) and the batteries themselves last around 7 years. I know it would add cost, but if these cameras are going to hammer the flash memory that hard, perhaps they should offer a BBRAM option for, perhaps, $20 more per camera.
Click to expand...
Removable media allows retrieval of footage even if the camera is dead. Setup properly you'll get a few years out of an sd card. No need to constanly hammer it with continuous writing.
 
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