Apple's new iPhone 4 is a technology miracle…!
You can see the differences from the latest model iPhone 3GS
Quick summary of new features:
- Brand new design
- 9.3mm thick, 24% thinner than the 3GS.
- Volume controls. Mute button.
- Front facing camera. Camera, LED Flash.
- Sleep/wake button.
- Headset, second mic.
- Video calling
- Glass front, glass back.
- 960 x 640 326 ppi screen powered by IPS technology
- Apple A4 processor
- Gyroscope
- HD video recording
- Two colors (black and white)
FaceTime
People have been dreaming about video calling for decades. iPhone 4 makes it a reality. With just a tap, you can wave hello to your kids, share a smile from across the globe, or watch your best friend laugh at your stories — iPhone 4 to iPhone 4 over Wi-Fi. And it works right out of the box. No other phone makes staying in touch this much fun.
Retina Display
The Retina display on iPhone 4 is the sharpest, most vibrant, highest-resolution phone screen ever, with four times the pixel count of previous iPhone models. In fact, the pixel density is so high that the human eye is unable to distinguish individual pixels. Which makes text amazingly crisp and images stunningly sharp.
Multitasking
iPhone 4 introduces a whole new way of multitasking. Now you can run your favorite third-party apps — and switch between them instantly — without slowing down the performance of the foreground app or draining the battery unnecessarily.1 This smarter approach to multitasking is available only on iPhone.
HD Video Recording & Editing
Shoot your own movies in high definition. Capture impressive video even in low-light settings, thanks to the advanced backside illumination sensor and built-in LED light. Then edit and create your own mini-masterpiece right on iPhone 4 using the new iMovie app — with Apple-designed themes, titles, and transitions. It’s coming soon to the App Store for $4.99
5-Megapixel Camera with LED-Flash
Take beautiful, detailed photos with the new 5-megapixel camera with built-in LED flash. The advanced backside illumination sensor captures great pictures even in low light. And the new front-facing camera makes it easy to take self-portraits.
Standard: optimizes the volume size when combining hard disks with different sizes. if the volume is composed of two or more hard disks, data integrity is protected when one of the hard disks fails.
Basic: uses only one hard disk to build a volume that does not have any data protection mechanism.
JBOD: combines at least 2 hard disks to build a volume. Available volume capacity equals to the total capacity of the composed disks. The advantage is it allows combining hard disks with different sizes. The disadvantage is it has worse performance than that of a RAID 0 volume.
RAID 0: combines at least 2 hard disks to build a volume, which is without any data protection mechanism. When one of the composed disks fails, the data in the volume cannot be rescued. Available volume capacity equals to the total capacity of the composed disks.
RAID 1: combines 2 – 4 hard disks to build a volume. The system will write identical data to each hard disk at the same time, so data integrity is protected when at least one disk is normal. Available volume capacity equals to the capacity of the smallest hard disk.
RAID 5: combines at least 3 hard disks to build a volume and stripes both data and parity information across the disks. Therefore, when one of the composed disks fails, the system can be rebuilt by using the parity information on the other disks, so data integrity is protected. Available volume capacity equals to (the capacity of the smallest hard disk) X (number of hard disks – 1)
RAID 5+Spare: combines at least 4 hard disks to build a volume. It uses 1 disk as the hot spare disk, and the remaining to create a RAID 5 volume. When one of the disks within the RAID 5 volume fails, the hot spare disk will be added to the RAID 5 volume automatically to ensure data integrity. Available volume capacity equals to (the capacity of the smallest hard disk) X (number of hard disks – 2)
RAID 6: combines at least 4 hard disks to build a volume and stripes both data and parity information across the disks. Therefore, when one or two of the composed disks fails, the system can be rebuilt by using the parity information on the other disks, so data integrity is protected. Available volume capacity equals to (the capacity of the smallest hard disk) X (number of hard disks – 2)
RAID 10: combines at least 4 hard disks to build a volume, and the number of disks must be even. RAID 10 has the performance of RAID 0 and data protection level of RAID 1. RAID 10 combines two hard disks into a group, in which data integrity is protected when one of the two hard disks fails. Available volume capacity equals to (the capacity of the smallest hard disk) X (number of hard disks / 2)