SSD — smartctl — Статус
В моем MacBook Pro установлен SAMSUNG SSD 830 Series . В своей работе мне нужно анализировать огромное количество данных. У меня есть php-скрипты, которые извлекают данные, создают таблицы csv, а затем gnuplot генерирует сотни графических изображений. Графика просматривается. Выбирается несколько релевантных, а остальные вместе с инструкцией csv и gnuplot отбрасываются. Это заставляет меня генерировать около 5 — 60 ГБ данных ежедневно, 6 дней в неделю. Таким образом, сектора SSD много переписываются.
Теперь я использовал smartctl на ssd, чтобы проверить его состояние, но я не могу понять результат. SSD 3,5 месяца.
Что означает Wear_Leveling_Count ? Я получаю 141, но все говорят, что это должно быть меньше 99. Что такое Airflow_Temperature_Cel и Total_LBAs_Written и POR_Recovery_Count . Каковы лучшие ценности? Стоит ли ждать провала в ближайшее время?
Кроме того, мой внутренний жесткий диск емкостью 1 ГБ (заменяющий оптический привод) гласит:
What does "POR Recovery Count" Mean in Samsung Magician?
I've had my Samsung 830 installed for a while and have noticed the "POR Recovery Count" SMART attribute going up over time. It's currently at 116.
Does anyone know what this parameter means and if it has any influence on drive life?
It looks like there is no threshold set for this value, so I'm guessing it has no effect, but I just wanted to check.
DuckieHo
ID # 235 Power Recovery Count
A count of the number of sudden power off cases. If there is a sudden power off, the firmware must recover all of the mapping and user data during the next power on. This is a count of the number of times this has happened.
To answer most of your questions: (1) a fridge cannot cool a PC (2) 64-bit OS for over 3.4GB (3) If a PCIe card fits, it should work (4) Resolution, not screen size (5) Report, not respond to Spam (6) Single-Rail/Non-Modular PSUs are not always better than Multi-Rail/Modular (7) Sequential does not matter as much as random for OS drives (8) Requirements come before hardware for servers
What's your Power Recovery Count in Trim Enabler?
I’m curious of your Power (POR) Recovery Count in Trim Enabler (it’s under smart status).
I got a Samsung 840 SSD and it’s growing each time I put my mac to sleep. If I shut down or restart then it doesn’t increase.
Maybe I’m not the only one
If anybody got some additional info on why POR count is increasing then let us/me know.
Thanks for your input!
kondi
macrumors newbie
- Dec 7, 2013
- #2
Sorry guys I’m new here and not exactly sure what is the policy on bumping old threads but I couldn’t find any other thread on this topic.
Anyways, I have exactly the same problem as the OP with the same Samsung SSD model.
According to Samsung POR (power) recovery count value in S.M.A.R.T increases if an unexpected power failure occurs or an unsafe shutdown of the computer. But every time the mac goes to sleep mode the Por recovery count keeps going up. Just like the OP is experiencing shutting down or restarting doesn’t increase the value. It is worth mentioning I had this hard drive on a Windows 8 machine and the behavior was similar but opposite in fact; Sleep mode was fine and shutdown or restart would make it go up.
I’m curious to know if this is normal behavior or we both have faulty ssd’s.
JerzyKoziol
macrumors newbie
- Apr 8, 2014
- #3
So — what about your SSDs? Is the Power (POR) Recovery Count still increase?
I have exactly the same problem — and it is also a Samsung 840 Evo SSD!
I’m a M$ user so my SSD’s behavior is exactly the same as AeroZ described. Sleep is fine but Shutdown or Restart add +1 to POR Recovery Count every time.
Currently I have 25 Power-on Counts and 24 POR Recovery Counts! Every time I shutdown/restart my notebook the number increases.
I wonder what to do with that! How did you managed the problem? Was that faulty drives? Or the problem still exists?
I have a double problem because I’ve got a new notebook and a new SSD — so I can’t definitely point the suspected hardware. It may be notebook as well as faulty SSD.
But — you tell it also happens on a Mac! So it seems to be system independent.
Moreover — I have 2 SSD’s in my notebook. 1.5 y/o Samsung 830 and the new Samsung 840 Evo. While the POR Recovery Count increases after every shutdown for the 840Evo drive — the second SSD (830) is perfectly fine!
It has several POR Recovery Counts but it’s 1.5 years old and I made several hard boot or power loses through this time so I am not surprised.
The most important is that it doesn’t increase on Samsung 830.
Gathering all the information I suspect faulty 840Evo but I am not sure.
I can try to put it into another notebook and check it’s behavior.
I can also try to replace both SSD in their bays and put A->B and B->A (I have two hdd connectors in my notebook).
I will do that in the meantime.
If you guys found anything new on this subject please post some info — thank you!
Mr. Retrofire
macrumors 603
- Apr 8, 2014
- #4
JerzyKoziol
macrumors newbie
- Apr 8, 2014
- #5
Yes I know but such information sometimes becomes very important to the end user and many people use it to determine whether their hardware works properly.
I am not a fan of such frequent diagnostics — but when I buy new hardware I always check it. It’s an SSD in this case and this is extremely important for me. I don’t care of my notebook as much as I care of the data stored on the disk. For a couple of years I use only a notebook and I don’t want another PC’s at home, at work. Just one computer for everything and everywhere. So there is a lot of very important data for me — home, family and business. Of course I back it up frequently but not everyday — it’s not a server! But I don’t want the data to become corrupted or lost a week of work.
Nevertheless I’ve made my first check — I put SSD from bay A to bay B and vice versa.
Huh. POR Recovery Count stopped. I have made several shutdowns and it works like a charm. Shutdowns are counted — but properly, without any unnecessary interrupts shown in SMART. Power-on Count is now 35 and POR Recovery Count stopped at 28. Before Power-on Count was always 1 ahead of POR.
That may seem to resolve the problem but I will check other options e.g. putting the 840Evo into another notebook.
Apart from that I suspect I put the disks into wrong bays. I am not sure at this moment because I have to open the cover once again and check it but it may be related to the fact that the first SSD with OS should be mounted in the first bay, and the second (storage) in the secondary bay.
Long time ago it was important with ATA drives . I even didn’t think of it nowadays with "SATA-AHCI-GPT-SSD" damn super modern disks!
It looks like I should refresh some knowledge from good old times .
(edit)
Well it’s funny but the OS disk (Samsung 830) is in the secondary bay and the "data" disk (Samsung 840Evo) is in the first primary bay — and this is the configuration which doesn’t provide errors on the 840Evo.
I will stick with it for a while and check if that’s OK. If there’s no more POR Recovery Count errors for the 840Evo I will retain the configuration and assume it as a solution to my problem.
I don’t know how to help other users — if you have 2 disk bays, try the other one. If not — maybe it’s a BIOS function. some kind of energy saving stuff. I have 1 or 2 settings related to energy saving but I didn’t touch it. And finally comes the Win8 OS — maybe there is a bug which causes such SSD behavior but I doubt it because as some users wrote before — it happens also on MacOS.
And maybe it’s a bug inside Samsung firmware which will be repaired in future firmware versions.
Anyway swapping the SSD disks helped in my configuration so I keep it working.
Sometimes I envy you Mac users that you don’t have such problems arising around M$ systems . I am a big fan of iOS devices and I don’t realize living without iPhone and iPad — but I’ve been using M$ PCs for decades and I am unable to leave this platform for Apple. That’s a pity but life goes on.
Показатели S.M.A.R.T. в SSD Samsung 860 Evo 250GB
Приветствую. 20.07.2018 установил 2xSSD Samsung 860 Evo 250GB MZ-76E250 (гарантия 3 года от магазина). Так вот, один из них стоит в системном блоке с процессором AMD Athlon II X2 240 и мат. плата GigaByte GA-MA770-US3 rev. 2.0 (sata2 3Gbit/s), ОС Windows 7 x64, спустя этот промежуток времени программы Samsung Magician, CrystalDiskInfo показывают такой вот S.M.A.R.T. Меня больше интересует нормальный ли показатель Wear Leveling Count, CRC Error Count, POR Recovery Count?
На SSD игр нету, сёрфинг в браузере, работа с документами, youtube, музыка. За полезные ответы спасибо.