![]() ![]() What the table tells us is that Consumer SATA drives are 100 times more likely than Enterprise SAS drives to encounter a read error. The hard error rate for these drives is 10E16. For example, Seagate has a 10.5K drive with a SAS interface (no SATA interface). The third class of drives, listed in the third row of the table as “Enterprise SAS/FC,” typically only has a SAS interface. The first one has a 12Gbps interface and the second one has a 6Gbps SATA interface but both have the same hard error rate, 10E15. Both drives are the same but have different interfaces. For example, Seagate has two enterprise drives, where the first one has a SAS 12 Gbps interface and the second one has a SATA 6 Gbps interface. The second class of drives, labeled as “SATA/SAS Nearline Enterprise” in the above table, can have a SATA or SAS interface (same drive for either interface). Notice that the hard error rate, referred to as “Nonrecoverable Read Errors per Bits Read, Max” in the linked document, is 10E14 as shown in the table above. Here is an example of a SATA consumer drive spec sheet. ![]() The first row in the table, which are drives listed as “SATA Consumer,” are drives that typically only have a SATA interface (no versions with a SAS interface). Table 1: Hard error rate for various storage media Most hardware will go through several retries to read the sector but after a certain number of retries and/or a certain period of time, it will fail and the drive reports the sector as unreadable and the drive has failed.īelow is a table from Henry’s previously mentioned article that lists the hard error rates for various drive types and how much data, in petabytes, would have to read before encountering an unreadable sector. When a drive encounters a read error it simply means that any data that was on the sector cannot be read. It is defined as the number of bits that are read before the probability of hitting a read error reaches 100% (i.e. All rights reserved.This subject has been written about several times including one of Henry Newman’s recent articles. App availability and experience may vary by market.Ĭopyright: © 2023 Dell Inc. See for the Windows 10 features available. ^ The device you buy comes with Windows10 installed. Online Pricing: Prices advertised online include delivery charges & GST Mistakes: While all efforts are made to check pricing and other errors, inadvertent errors do occur from time to time and Dell reserves the right to decline orders arising from such errors. Choose carefully, as order cancellation rights are limited and additional costs may apply. Returns Policy: Dell’s “Returns Policy” found at //applies to all sales. Other trademarks may be trademarks of their respective owners. The NVIDIA logo, GeForce, GeForce RTX, GeForce RTX Super, GeForce GTX, GeForce GTX Super, GRID, SHIELD, Battery Boost, Reflex, DLSS, CUDA, FXAA, GameStream, G-SYNC, G-SYNC Ultimate, NVLINK, ShadowPlay, SLI, TXAA, PhysX, GeForce Experience, GeForce NOW, Maxwell, Pascal and Turing are trademarks and/or registered trademarks of NVIDIA Corporation in the U.S. AMD, and the AMD Arrow logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Ultrabook, Celeron, Celeron Inside, Core Inside, Intel, Intel Logo, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside Logo, Intel vPro, Itanium, Itanium Inside, Intel Evo, Intel Optane, Iris, Itanium, MAX, Pentium, Pentium Inside, vPro Inside, Xeon, Xeon Phi and Xeon Inside are trademarks of Intel Corporation or its subsidiaries in the U.S. Microsoft and Windows are US registered of Microsoft Corporation. *Dell Terms And Conditions: Apply to all sales available on request or at "Terms and Conditions of Sale" located at the bottom of our homepage at Trademarks: Dell Technologies, Dell and other trademarks are trademarks of Dell Inc. Energy, Climate Action & Sustainability.APEX Cloud Platform for Red Hat OpenShift.APEX Cloud Platform for Microsoft Azure.APEX Data Storage Services Backup Target. ![]()
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