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- Leopard's Time Machine: Consider the 'bad and ugly' side of storage
- Leopard's Time Machine: Consider the 'bad and ugly' side of storageApple is PERFECT and has already thought of thisJust format your Time Machine drive to use ZFS. OS X's implementation of ZFS is far superior to Solaris' and will survive even a total physical failure of the disk.You know, the...
- Tags: RAID, SILENT DATA CORRUPTION, Apple Mac OS X, hard drive, Time Machine, Apple Inc., storage
- Discussion threads 2007-11-23
- Realtek silent data corruption caused by firmware
- A little more than a week ago, I took Realtek and Microsoft to task over some Realtek WHQL certified drivers causing silent data corruption. As it turns out, the problem was actually caused by a Firmware flaw in Realtek's hardware. This means the problem would have affected any operating system...
- Tags: Data Corruption, Firmware, George Ou
- Blog posts 2007-08-08
- 50 ways to lose your data
- Apologies to Paul SimonDisk drives are marvelous devices. Especially when they go "clunk" and stop working. I'm not kidding: at least you know your data is hosed. I prefer that to the silent data corruption you don't find out about until you can't access a file or your OS starts...
- Tags: Disk, Data, Robin Harris
- Blog posts 2007-08-07
Additional Resources
- DRAM error rates: Nightmare on DIMM street
- A two-and-a-half year study of DRAM on 10s of thousands Google servers found DIMM error rates are hundreds to thousands of times higher than thought -- a mean of 3,751 correctable errors per DIMM per year. This is the world's first large-scale study of RAM errors in...
- Tags: DRAM, Error, DIMM, Hardware Failure, Memory, Semiconductors, Hardware, Components, Robin Harris
- Blog posts 2009-10-04
- Google plugs 'high risk' WebKit holes in Chrome
- Google has shipped a Chrome browser update to fix two serious security issues in WebKit. According to Google Chrome program manager Mark Larson, the most serious of the two flaws could allow hackers to execute harmful code in the browser's sandbox. It is rated "high severity."...
- Tags: Google Inc., Attacker, Web Browser, Google Chrome, Sandbox, Web Browsers, Security, Internet, Ryan Naraine
- Blog posts 2009-06-11
- SAN Storage: Coping with Server Virtualization
- Server virtualization is easy, but networked storage for virtualized servers is anything but. Key challenges include: storage network oversubscription virtual server downtime due to provisioning and volume expansion tradeoffs among data reliability, availability, performance, and cost minimizing silent data corruption ...
- Tags: Virtual Server, SAN, NEC Corp., Server Virtualization, Virtualization, Ip storage, Storage, Servers, Hardware
- White papers 2009-03-01
- Judge: Probable cause required for location info
- Judge: Probable cause required for location infoPrivacy Not an IssueSince the government wants information from a third party, not the individual, there is no right to privacy. Right to privacy has been over extended already to include public areas where there is not expectation to privacy, and should be...
- Tags: Government, Telecom & Utilities, Right-to-privacy, privacy, Probable Cause, location info
- Discussion threads 2008-09-15
- Undetected Disk Errors in RAID Arrays
- Though remarkably reliable, disk drives do fail occasionally. Most failures can be detected immediately; moreover, such failures can be modeled and addressed using technologies such as RAID Redundant Arrays of Independent Disks. Unfortunately, disk drives can experience errors that are undetected by the drive - which the paper refers to...
- Tags: Disk, RAID Array, RAID, Storage, Hardware
- White papers 2008-07-01
- Apple announces ZFS on Snow Leopard
- Apple announces ZFS on Snow LeopardTimingHow sweet would it would be if App£e could deliver Grand Central and ZFS at the point of WINDOWS 7 release. The marketing people would have a field day!Kudos to Sun for inventing such a great FS.I wonder how long it will take for Apple...
- Tags: RAID, Desktops, ZFS, Apple Inc., Snow Leopard, Microsoft Corp.
- Discussion threads 2008-06-20
- Apple announces ZFS on Snow Leopard
- Finally, a modern file system on a consumer OS As if Grand Central weren't enough bad news for Microsoft, now they have ZFS to contend with. Building a reliable, high-performance file system takes years and Microsoft doesn't have years to respond. The formal announcement is...
- Tags: Disk, File System, Apple Inc., Microsoft Corp., Sun ZFS, Checksum, RAID, Storage, Hardware, Robin Harris
- Blog posts 2008-06-19
- Microsoft's biggest lemon - Windows Home Server
- Microsoft's biggest lemon - Windows Home ServerI was thinking of buying this until this article.At home we have 2 PC's and 3 laptops. I have a NAS drive for common storage, and a tiny print server to share the printer.I was thinking of getting WHS purely because it is a...
- Tags: Printers, Servers, Operating systems, data corruption bug, server, lemon, Microsoft Windows Home Server, Windows Home, printer, Microsoft Windows, Microsoft Corp.
- Discussion threads 2008-03-11
- Apple's new kick-butt file system pushes on
- Apple's new kick-butt file system pushes onSounds similarto ReiserFS 4... ]:)FINALLY!Competition in a MEANINGFUL way, not just bells and whistles!Open source seems to be good.Sun being sued for ZFS?Isn't Sun being sued by NetApp over patented idea/technology infringement in the ZFS?Article sounds a bit over-hypedalmost to the point where it...
- Tags: NetApp, open source, patent office, Beryl, ZFS, file system, Apple Inc., Sun Microsystems Inc.
- Discussion threads 2007-10-05
- Apple's new kick-butt file system pushes on
- Fixing data corruption before it starts Apple is moving quickly ahead with their plan to give Mac users the most reliable data storage on any desktop with the new file system ZFS. According to MacRumors the latest developers build of OS X Leopard includes V1.1 of ZFS. ...
- Tags: Apple Macintosh, Disk, Sun Microsystems Inc., File System, Data Corruption, Apple Inc., Microsoft Corp., ZFS, Desktops, Hardware, Robin Harris
- Blog posts 2007-10-05
- Data corruption is worse than you know
- Many people reacted with disbelief to my recent series on data corruption (see How data gets lost, 50 ways to lose your data and How Microsoft puts your data at risk), claiming it had never happened to them. Really? Never had to reinstall an application, an OS, or had a...
- Tags: Disk, CERN, Data Corruption, Data, News, Error, Robin Harris
- Blog posts 2007-09-17
- Vista MMCSS gigabit throttling a victim of hard-coding, jumbo frames to the rescue!
- For the last couple of days I've been working behind the scenes with fellow blogger Adrian Kingsley-Hughes, Ed Bott, and Microsoft to get to the bottom of the Vista gigabit throttling effect. This throttling effect occurs when someone launches Windows Media Player and tries to copy files at gigabit speeds. ...
- Tags: Packet, Performance, Network, Microsoft Windows Vista, Gigabit, Microsoft Corp., CPU, Mbps, 4K, George Ou
- Blog posts 2007-08-29
- News to know: Linux; XP SP3; MySpace profits; HTC Advantage unwrapped
- Notable headlines:Paula Rooney: Torvalds, Red Hat are no shows at Linuxworld. Novell CEO Calls For New Linux Distro ISV Standard, Praises FSF.Mary Jo Foley: Microsoft confirms Windows XP SP3 pre-beta is in testers’ hands. A Microsoft Code Name a Day: Volta. You say SkyDrive, I say LiveDrive. Ed Bott: A confusing...
- Tags: Google Inc., Linux, High Tech Computer Corp., Google News, Microsoft Windows XP, Apple Inc., Microsoft Corp., MySpace, IBM Corp., Larry Dignan
- Blog posts 2007-08-09
- How Microsoft puts your data at risk
- 56% of data loss due to system & hardware problems - OntrackData loss is painful and all too common. Why? Because your file system stinks. Microsoft's NTFS (used in XP & Vista) with its de facto monopoly is the worst offender. But Apple and Linux aren't any better. Everyone knows...
- Tags: NTFS, Disk, File System, Microsoft Corp., Robin Harris
- Blog posts 2007-08-08
- Realtek silent data corruption caused by firmware
- Realtek silent data corruption caused by firmwareWell George...... it must be nice to know that you've "made a difference". Nice one. :-)On a more serious note this is an excellent demonstration of Djkstra's[1] famous maxim that testing [i]"...proves the presence of bugs, not their absence"[/i] - something we should all...
- Tags: Ethernet, Operating systems, Network technology, Linux, OS Vendor, Realtek, firmware, operating system, hardware, Microsoft Corp.
- Discussion threads 2007-08-08
- Realtek network driver silently corrupts data
- Realtek network driver silently corrupts datathanksThat clears up a couple of blue screen mysteries that went away after changing a NIC.Not just the driverGeorge, TCP/IP is [b]supposed[/b] to be robust in cases like this -- bitflips lower in the stack [b]should[/b] be caught at the datagram level.If a driver error...
- Tags: Cyberthreats, Operating systems, SECURITY, NIC Driver, network, WHQL, virus, operating system
- Discussion threads 2007-07-29
- Realtek network driver silently corrupts data
- [Update 8/8/2007 - Realtek silent data corruption caused by firmware]One of the three most dreaded phrases in the computer world is "SILENT DATA CORRUPTION". Your data gets corrupted just enough that it isn't readily detectable by most applications and operating systems and you think your data's good until you actually need to...
- Tags: Network, Adapter, Data Corruption, Microsoft Windows Vista, Microsoft Windows, µTorrent, Computer, Transmission Error, George Ou
- Blog posts 2007-07-28
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