reader50

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Posts posted by reader50


  1. I see there have been no forum comment threads for news posts since Nov 19. When I followed a comment link, it took me to reddit. Which I've never signed up with.

    Is SR discontinuing the forum here? I notice a lot of spam lately, even after I reported one. Spam still up days later.

    I actually wanted to comment on the Seagate dual-actuator story. They talk about HAMR, release it to trusted partners for testing ... and we hear nothing more. No public release. They talk about dual-actuator, now released to trusted partners for testing ... and no word on public availability.

    The future seems to be putting up a fight about becoming the present.

    Are the HAMR drives experiencing issues in testing? That would explain why they haven't shipped yet.


  2. You can use WikiPedia's key to SMART values.

    1) Read Error Rate = vendor specific value. Desired to be "low", but that's all we know. Interpreting it would vary by manufacturer.

    7) Seek Error Rate = another vendor specific value. We don't even know if high or low values are desired.

    184) End-to-End error = desired to be low. This attribute may predict drive failure.

    The last one is the only one I'd worry about. On top of that, you're getting recurring disk errors. I'd replace the drive. You're backed up, right? In case the drive fails unexpectedly?


  3. The only diff between generic- and Mac-friendly drives is how they're preformatted. Mac drives come formatted HFS+ (Mac OS Extended - Journaled). PC drives come formatted NTFS or ExFAT. Just reformat as needed - it's the same drive either way.

    Why do you need data recovery of your backup drive? Unless your main drive(s) have failed, your backup is just a backup. Swap the drive with WD, plug the new drive in, reformat as needed, and let Time Machine start over.

    ps - you contacted Apple Support. You didn't contact MAC - no such party.


  4. As 16TB drives already require 9 platters, a conventional 18 needs 12.5% higher overall density. Or about 6% linear density increase AND 6% tracks increase.

    Are these the first MAMR drives?

    We keep getting promised HAMR and MAMR drives any time, and that further increases are not possible without. Only to keep getting conventional size increases. This isn't exactly a complaint, but they should keep their stories straight.


  5. No reallocated sectors. Very low start counts and run time. Low max temp. I'd chalk it up to driver or firmware hiccup every 28 GB or so.

    If your backup data is critical, change drives. Otherwise, I'd pay attention to it in the future, for any misbehavior.


  6. Can you dump and post the SMART data for your drive? If it really is reallocated sectors, that would be parameter 05. Seems the most likely, but it could also be a few other things. Like a poor cable, or internal problems.

    If it's your only backup, and the data is critical, I'd be concerned. But I'd like to see the SMART data rather than guesswork based on a performance benchmark.


  7. That's not quite accurate. HGST did not sell their entire 3.5" business to Toshiba. Only enough to allow Toshiba to immediately enter the consumer market as a real competitor. HGST retained plenty of 3.5" assets, and continued to sell them. With newer models introduced for years.


  8. I updated my pw, so the thieves cannot log in and reduce the average quality of my postings. Those viagra posts would really cut into my rep.

    However, I had to change my pw over HTTP. SR has an HTTPS cert, but it's only valid for the news side. And using it with a forum address loads the news side anyway.

    Perhaps the SR cert(s) could be updated, so the forums will load securely?


  9. For anyone interested, BackBlaze has posted new HD stats. Their HD Summary for 2018. Highlights:

    • They've deployed 1,205 Toshiba 14TB drives. Annualized failure rate projected at 3%, normal for initial burn-in. They've been in service one quarter, with actual failure rate of 0.75% so far. Annual figure expected to decline going forward. Depending on how good a price they got per drive, they may have paid over $500K for the set.

    • They've deployed a heck of a lot of Seagate 12TB drives. 31,146 with annual failure rate projected at 1.39%. Once again, they've been in service less than a year on average. So this is probably mostly burn-in losses. Probably spent at least $10M buying them all.

    • No mention of the new Toshiba 16TB drives. Which I have not seen for sale anywhere.

    • HGST has the best reliability again by small margins. Seagate's figures continue to improve with later models. WD is dropping off the chart as older models are retired - BB is not adding any new WDs.


  10. I did not get this email, or any other from SR in the last 48 hours. Checked my trash & spam folders to be sure. My email addy with the board is valid. Perhaps SR interrupted outgoing mails before it got to mine.

    Advice from an admin on an unrelated board: they want to download the user table. Preferably via SQL access, makes it easier and faster. They want the hashed passwords, salts, and email addresses. Over time they can crack the hashes, making the dump much more valuable than emails alone. They may also be interested in the private message table, in case any users exchanged email addresses.

    Hope everyone uses unique random passes on every site. That's the way to go. Once SR is sure they're clean, I'll update mine.


  11. Using the chart from the roadmap and their achieved "2 Tbpsi areal density" suggests the 16TB is using 8 platters. They're probably aiming for 20TB using 8 platters also.

    9-platter drives must be packed solid inside, so using 8 makes more sense. Leaves space for the extra laser components of each head. Corollary: the flagship drive size will probably use 8 platters for the foreseeable future.

    As this will push mid-sized drives (currently 8-10 TB) back down to 3-4 platters, it will lead to lower prices for mid-sized drives. So we can finally return to annual drops in price-per-gig.

    Not as good as I'd hoped for on density increases yet, but most definitely good news.