Raw Error Rate Mac
Contents |
can not post a blank message. Please type your message and try again. Neil Paisnel Level 1 (40 points) Mac OS X Q: HDD compatibility and Raw read error rates on "Seagate 4TB SSHD SATA hybrid raw read error rate smart Before I send these HDD's back ..Dabs.com have agreed to swap them.I wanted to
What Is Raw Read Error Rate
get an opinion on this issue here..in case there is no issue.Just installed two x Seagate 4TB Desktop SSHD SATA raw read error rate fix 6GB/s 64MB 3.5" 8GB SSD Cache hybrid drives on my Mac Pro 3,1 Model number of the drives is ST4000DX001-1CE168. both came form same order from same batch of drives.I have contacted Seagate and read error rate 1 they have said there is no know issue with these drivesMy boot drive is a OCZ-Vertex2 SSDthe fourth drive is a WDC Caviar Green 2TB.The 'issue' I am having with the new 4TB drives is reports I am getting from a third party app. "Trim Enabler" :http://www.cindori.org/software/trimenabler/Trim Enabler is reading and showing the Smart Attributes from all the drives..although it is an app for SSD 'trimming'Both the
Raw Read Error Rate Fail
new 4TB drives in Trim Enabler are reporting exceedingly high "Raw read Error Rates" where as the other drives, (SSD and Caviar Green) both report zero Raw read error rates.Both drives show about 250 hours of total power on usage and error rate figures of 104483024 and 20324056 no units given...and as I said, the other two drives show zero in these fields.To me this indicates a problem...but ?? Posted on Apr 13, 2014 2:51 AM I have this question too Close Q: HDD compatibility and Raw read error rates on "Seagate 4TB SSHD SATA hybrid All replies Helpful answers by Grant Bennet-Alder, Grant Bennet-Alder Apr 13, 2014 8:31 AM in response to Neil Paisnel Level 9 (61,411 points) Desktops Apr 13, 2014 8:31 AM in response to Neil Paisnel Every block on every drive is recorded with additional check bits included in the data. When a block is read, cyclic redundancy check error correction is applied to each and every read from disk, and the error-corrected data are passed to the System, or a re-try sequence is initiated.If the re-try fails to obtain correctable data after hundreds to thousand of re-tries, an I/O error occurs, and/or your System m
value is increased nearly each day : 11/09/2013 : 14687 12/09/2013 : 14687 13/09/2013 : 14883 14/09/2013 : 14883 15/09/2013 : 15686 Also my RAID has turned into virying state 2 times since 10/09/2013 and maybe 4 time since raw read error rate 1 I did setup the RADI 1. Should I RMA the "bad" disk? Kieren 2013-09-17 20:46:32 UTC #2 raw read error rate western digital I would contact Support about an RMA. Report the symptoms and see what they say. propergol 2013-09-17 20:57:20 UTC #3 Do you have the "uncut"
Read Error Rate Crystaldiskinfo
version of your answer? It's a bit short, is'nt it? Kieren 2013-09-17 21:13:51 UTC #4 It will be up to Support to judge the situation. An increasing error report is troubling. You can get more information by running Data Lifeguard- WinDLG. Having https://discussions.apple.com/thread/6085302?tstart=0 had difficult experience with a drive that was showing signs of problems, I tend toward immediate replacement, if possible. I take it that the RAID has rebuilt itself more than once? I'm not sure what "turned into virying state" means. It's a good thing that this is a RAID 1. Rebuilding with a new drive should be straightforward. propergol 2013-09-17 21:22:47 UTC #5 "virying" =verifying, sorry... And thanks for this long version answer. That was also my point of view. I was going to https://community.wd.com/t/2to-red-showing-a-lot-of-raw-error-read-rate/16571 purchase 2 others red 2To to make a RAID 10, I will wait the RMA result now... An other question arises : I have bought this drive from Amazon (France). Then, should I first try to ask Amazon for RMA, or directly to WD? Thanks again. Zatick 2013-09-17 22:28:35 UTC #6 It seems unlikely that a drive will be replaced based on raw read error rate. The first thing to understand that raw read error rate is not a counter, the number you see is not a direct count of read errors or anything like that. I just had a quick look at a few seagates, the raw read error rate value was 56 million. But if you take that and convert it into the proper formatted value (starting at 100, counting down to 0, with a value 6 or below being failed), then it's at 65. And these drives all jump down to 65 as soon as you turn them on. Each manufacturer has their own algorithms behind raw read error rate, and in fact manufacturers implement this differently on different models of their drives. So for one you need to look at the formatted value, because raw value is meaningless. The issue here is that drives have ECC, meaning it can detect and correct read errors on the fly. So when you actually get a "bad sector" it is a sector so damaged that ECC can't correct it. Now, if you take a WD black in good condition, ECC
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or http://askubuntu.com/questions/20393/how-do-i-interpret-hdd-s-m-a-r-t-results posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody https://books.google.gr/books?id=IeHTWHSpWIQC&pg=PA102&lpg=PA102&dq=raw+error+rate+mac&source=bl&ots=xVFnqmgN3O&sig=15IAITm3Asq3ZaeVhc9ibso__Aw&hl=en&sa=X&ved=0ahUKEwi3h4XFuerPAhVC_SwKHQ0XBv0Q6AEIbzAJ can ask a question Anybody can answer The best answers are voted up and rise to the top How Do I interpret HDD S.M.A.R.T Results? up vote 40 down vote favorite 10 My laptop has recently started to become a bit error rate unreliable, and for some reason I started to suspect that my HDD was starting to fail. After a bit of hunting on the internet, I found Ubuntu's Disk Utility in the System menu and ran the long SMART diagnostics from this. However, since the documentation for Disk Utility is very poor (palimpsest?), I'm not sure how to interpret the results: For example, the Read Error Rate is over 50 million (!), yet the Assessment is rated "Good". So would someone mind explaining to read error rate me how to interpret the results of these tests (especially the Normalized, Worst, Threshold and Value numbers)? And maybe tell me what they think of the results I got for my HDD? (Thanks) hard-drive smart share|improve this question asked Jan 6 '11 at 23:46 Marty 78021015 Has the "Hardware ECC recovered" same value as "Read error rate"? My disk has 676 power cycles, was powered on 285 days, and has 193M errors. Compared to mine, your disk has way too much error, but I'm just speculating here. Anyways I just got worried myself o.O –danizmax Jan 7 '11 at 8:47 Yip - both numbers are the same! –Marty Jan 7 '11 at 16:32 add a comment| 3 Answers 3 active oldest votes up vote 32 down vote accepted You have a good description of how SMART works on the wikipedia. But a quick intro: Value: This is the raw value that the controller reports. Usually it's an easy to understand value (like power on hours or temperature), but sometimes it isn't (like the read error rate). Different manufacturers can use different structures and meanings for this data. Normalized: This is the above value normalized so a higher value is always better. So a 114 in read/error rates is better than 113. Again, how your hard drive converts raw data to normalized value is vendor specific. Worst: The worst normalized value that your driver had in the past (where 99 is likely the
εμάς.Μάθετε περισσότερα Το κατάλαβαΟ λογαριασμός μουΑναζήτησηΧάρτεςYouTubePlayΕιδήσειςGmailDriveΗμερολόγιοGoogle+ΜετάφρασηΦωτογραφίεςΠερισσότεραΈγγραφαBloggerΕπαφέςHangoutsΑκόμη περισσότερα από την GoogleΕίσοδοςΚρυφά πεδίαΒιβλίαbooks.google.gr - In this thesis, we develop transport and link-level protocols that use the principles of fragmentation, loss estimation and Forward Error Correction (FEC). Our design structures these building blocks to perform well even under high loss rates (up to 50% PER). Analysis of the scheme enables us to tune...https://books.google.gr/books/about/Transport_and_Link_level_Protocols_for_W.html?hl=el&id=IeHTWHSpWIQC&utm_source=gb-gplus-shareTransport and Link-level Protocols for Wireless Networks and Extreme EnvironmentsΗ βιβλιοθήκη μουΒοήθειαΣύνθετη Αναζήτηση ΒιβλίωνΑποκτήστε το εκτυπωμένο βιβλίοΔεν υπάρχουν διαθέσιμα eBookProQuestΕύρεση σε κάποια βιβλιοθήκηΌλοι οι πωλητές»Αγορά βιβλίων στο Google PlayΠεριηγηθείτε στο μεγαλύτερο ηλεκτρονικό βιβλιοπωλείο του κόσμου και ξεκινήστε να διαβάζετε σήμερα στον ιστό, το tablet, το τηλέφωνο ή το ereader σας.Άμεση μετάβαση στο Google Play »Transport and Link-level Protocols for Wireless Networks and Extreme EnvironmentsProQuest, 2008 - 148 σελίδες 0 Κριτικέςhttps://books.google.gr/books/about/Transport_and_Link_level_Protocols_for_W.html?hl=el&id=IeHTWHSpWIQCIn this thesis, we develop transport and link-level protocols that use the principles of fragmentation, loss estimation and Forward Error Correction (FEC). Our design structures these building blocks to perform well even under high loss rates (up to 50% PER). Analysis of the