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Stephen Foskett, Pack Rat

Understanding the accumulation of data

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CRC

Turn Off Error Recovery in RAID Drives: TLER, ERC, and CCTL

May 30, 2017 By Stephen 3 Comments

Hard disk drives encounter errors from time to time, so it's a good thing that most have the ability to recover data anyway. But RAID systems usually have their own error recovery capabilities and can be thrown off when a hard disk pauses I/O. So it's a good idea to use hard disk drives that allow you to disable or limit error recovery in RAID systems. Error Recovery … [Read more...] about Turn Off Error Recovery in RAID Drives: TLER, ERC, and CCTL

Why Big Disk Drives Require Data Integrity Checking

December 19, 2014 By Stephen 7 Comments

Hard disk drives keep getting bigger, meaning capacity just keeps getting cheaper. But storage capacity is like money: The more you have, the more you use. And this growth in capacity means that data is at risk from a very old nemesis: Unrecoverable Read Errors (URE). Let's get one thing out of the way from the start: The only thing protecting your data from corruption … [Read more...] about Why Big Disk Drives Require Data Integrity Checking

How Did Microsoft and Intel Get 1 Million iSCSI IOPS?

March 19, 2010 By Stephen 3 Comments

Ever since Microsoft and Intel declared that the combination of Windows and Nehalem could deliver over a million iSCSI IOPS, I've been curious about just how they did it. What black magic could push that many I/Os over a single Ethernet connection? And what was on the other end? Now Intel has revealed all in a whitepaper, and the results are surprising! What iSCSI Did Let's … [Read more...] about How Did Microsoft and Intel Get 1 Million iSCSI IOPS?

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