![]() ![]() For example, both devices lacked multitasking, and the ability to set a custom home screen wallpaper. The iPhone 3G and the second generation iPod Touch were capable of running iOS 4, but had more limited features. With this release, Apple dropped support for the original iPhone and the first generation iPod Touch, which is the first time Apple had dropped support for any device in an iOS release. It was the first version of the operating system to be called "iOS", due to the iPad being released. iPhone OS 2Īpple announced iOS 4 in April 2010, and released it to the public on June 21, 2010, alongside the iPhone 4. It was succeeded by iPhone OS 2 on July 11, 2008. iPhone OS 1.1.4 is the final version of iPhone OS 1 for the first generation iPhone, with iPhone OS 1.1.5 being the final version of iPhone OS 1 available for the first generation iPod Touch. IPhone OS 1.1 was the first version supported by the first generation iPod Touch. It also lacked support for third-party native apps, and only supported web apps, which was criticized by reviewers and developers, including John Carmack. IPhone OS 1 was criticized for its lack of support for Adobe Flash web content, copy and paste, and Bluetooth stereo headphones. A number of different user interfaces were prototyped, including one that involved a multi-touch click-wheel. Many on the team were skeptical of the feasibility of a touchscreen keyboard, and believed that users would prefer hardware keyboards. ![]() During the development phase of iPhone OS 1, "probably 16, 17 different concepts" were developed. No official name was given when the iPhone was released, and Steve Jobs just said "iPhone runs OS X". It sounds better to upgrade all replicas to the new fancy 4096 bytes per sector drives, as they are probably faster for SQL server anyway.Apple announced iPhone OS 1 at the iPhone keynote on January 9, 2007, and it was released to the public alongside the first-generation iPhone on June 29, 2007. I have heard rumors about SANs being able to define this on a per volume basis, but I consider this a poor workaround as it will probably add latency. Get drives with identical Bytes Per Physical Sector for all your AOAG nodes. I suppose it is still 4096 under the covers, but the cluster has been running for a week, and no new error mesasges have been logged so far. But, by converting the SSD to dynamic, mirroring it and making sure it was aligned I finally got it anyway: I mean, the “physical” in the name makes it sound very final. This was the only dividing factor I could find.Įven though it seemed futile, I tried to find a way to change bytes Per physical Sector. (Mountpoints are in use, thus a path instead of a driveletter.) The SAN volume is using a 512 bytes per sector physical setup, but the new SSD drive is set up to use 4096 bytes. Turns out the culprit was the SSD drive itself. I thought “maybe the SAN volumes are misaligned?”, but that to was in order. ![]() This particular replica is running with local SSD drives, whereas the primary replica is connected to a SAN. Although, analysis of the drives show that they are properly aligned. ![]() The AOAG is running on Win 2012, and I have been lulled into thinking that drive misalignment was a thing of the past, expelled from reality with my last Win2003R2 server. “There have been 271104 misaligned log IOs which required falling back to synchronous IO. The SQL server error log on one of my secondary replicas is riddled with error messages like this one: ![]()
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