Comments on: Backblaze Drive Stats for Q2 2021

By: StrongForce

StrongForce — Tue, 19 Jul 2022 08:30:54 +0000

Hello, quick question, if I purchase a seagate 6Tb, it will essentially be the same as the model you have even if the reference number doesn’t match ? I guess that they have different numbers from years to years or..do I need the matching number in order to make sure to get the same level of reliability, for instance the model I can purchase here for 115 chf is : – ST6000DM003

Although for same price I can get 2TB WD Black which got 5 years warranty instead of 2, this sounds more tempting despite having much less space mmh..

By: richmunz

richmunz — Fri, 17 Sep 2021 19:52:19 +0000

Does anyone know the difference between part numbers 0F23139 and 0F22146 when it comes to the HMS5C4040BLE640 drives?

By: Kenneth Z

Kenneth Z — Thu, 16 Sep 2021 21:32:34 +0000

Hi Andy, thanks for this informative report. As I’m reading this article, I’m thinking to myself. Would it be nice if we can also test the data retention of the SSD drives by keeping some drives that you replace. Please consider this. Thanks.

By: Andy Klein

Andy Klein — Thu, 05 Aug 2021 01:08:38 +0000

In reply to Chas. Thanks to you as well. very helpful.

By: Andy Klein

Andy Klein — Thu, 05 Aug 2021 01:08:00 +0000

In reply to Traycer. Appreciate the information. Very helpful.

By: Traycer

Traycer — Wed, 04 Aug 2021 14:30:42 +0000

In reply to Andy Klein.

Availability of host reads and writes does seem to be hit ‘n miss, although I feel much of that is with older SATA SSDs. My m.2 drives (both SATA and NVMe) all seem to report TBW, usage, predicted lifetime, etc.

Drive Model: HP SSD EX920 1TB Spare Capacity Available: 100% Device Health: 100% Power Cycles: 52 Power On Hours: 16334 hours Unsafe Shutdowns: 22 Media Errors: 0 Total Host Reads: 412350 GBytes Total Host Writes: 37535 GBytes

Drive Model: WDC WDS200T2B0B-00YS70 Lifetime Power-On Resets: 18 Power-on Hours: 5924 Logical Sectors Written: 18291668504 Logical Sectors Read: 38461300215 Number of Write Commands: 77753289 Number of Read Commands: 165198527 Used Endurance Indicator: 0%

By: HTWingNut

HTWingNut — Wed, 04 Aug 2021 01:11:05 +0000

In reply to Ben Peddell. Ok, thanks. But if you take Lifetime AFR chart, top HGST hard drive (4TB) with 3,209 drives x 62.1 months avg age x 30 days/mth (avg) = 5,978,367 drive days total, yet it shows 13,329,752 drive days. How can you have nearly 3x the drive days than you do number of drives x average age of drives?

By: Andy Klein

Andy Klein — Tue, 03 Aug 2021 22:41:53 +0000

In reply to Chas. We'll have to see if we can determine TBW (Total Bytes Written), as it does not appear to a SMART stat (at least one I could find). The interplay between TBW, wear leveling and usage is intriguing.

By: Hedware

Hedware — Tue, 03 Aug 2021 20:20:49 +0000

Thank you again for this information and for now adding SSD information.