A2: Infrastructure scalability is the primary difference. Very high capacity storage arrays will be able to be built with SAS. While there are very few feature differences between the two serial interfaces, SAS systems will be much more expensive. As with SCSI, there is a significant price premium paid for SAS drives compared to SATA drives. In fact, there is even a significant price premium for SAS drives compared to SCSI drives.

Yes, when connecting a SAS controller to a non-expander based backplane, whether SAS or SATA, it makes no difference to the controller. See similar questions...

If the comparisons are done with the exact configuration using same SATA drives, there should not be any differences See similar questions...

A3: SAS will be used in the same environments in which SCSI and Fibre Channel are employed today. SAS is designed to be used in high availability, enterprise environments where maximum random performance is required. SATA on the other hand is optimized for sequential I/O operations where the requirement is to transfer large sequential blocks of data to and from a drive. See similar questions...

A4: Yes, but performance is not necessarily better. 3ware SATA RAID controllers connected to SATA drives outperform SAS controllers connected to SAS drives in sequential I/O as demonstrated by the graphs below. See similar questions...

A6: No. Reliability is calculated as a function of the number of drives and individual drive reliability. See similar questions...

A7: Maximum SAS drive capacity is currently 300GB (cost per GB = $5.81). Maximum SATA drive capacity is currently 500GB (cost per GB = $0.74). See similar questions...

The first thing you'll notice is the interface. SATA drives have a single cable with a small connector, while an IDE drive will have a flat ribbon cable. SATA drives have a faster data transfer rate. Your motherboard must be able to support a SATA drive. Otherwise, you'll need to buy an IDE drive. See similar questions...

Cabling is the same for both SAS and SATA, but SAS data is streamed across the 4x lanes where SATA is still treating the 4x lanes as 4x individual lanes See similar questions...

Ultra320 SCSI has been released allowing for a 320MB/sec data transfer rate. The SCSI specifications allow for the future release of Ultra640 as well doubling the transfer rate again. Ultra 640 is however will not eventuate due to issues with "data skewing" and the release of Serial Attached SCSI. The release of Serial Attached SCSI (SAS) overcomes the problem of "skewing" of parallel data bits on the cable by running all communications via a Serial interface. See similar questions...

SSD performance is based ONLY on the manufacturer and series, NOT by the connector. Think about it. The bandwith of IDE is 133MB/s, yet no hard drive in the world can sustain that speed...Not even a 10,000RPM SATA II Raptor! In other words, Western Digital COULD make an IDE Raptor of the same performance. See similar questions...

If you use a standard linear polarizer with cameras that use auto-focus and/or auto-exposure, you may have problems. This filter may also cause trouble with manual cameras, if you're using TTL light measurement. A little dependent on the camera, your meter might go crazy. (It is not said you _will_ get problems, only that you might get them. See similar questions...

A2: As mentioned above, the skylight filter is slightly coloured to give your pictures a 'warm' appearance. See similar questions...

DVD5: Cheap and popular. Single side, single layer. 4.7 gigabyte capacity, 2 hours and 15 minutes MPEG-2 viewing time. See similar questions...

SAS use a variety of campaign tactics to influence decision makers in creating recreational waters free from pollution. We carry out peaceful, but hard-hitting actions to generate campaign momentum, use supportive politicians to help us in the corridors of power, and need the likes of YOU to build on that support by signing campaign postcards or writing letters. See similar questions...

SAS are a non-profit making organisation campaigning for cleaner, safer recreational water. We receive no government support and SAS funds come from individual membership subscriptions, the selling of SAS merchandise, SAS fundraising events such as the SAS Ball and sponsorship from companies looking to put back some of their profits into environmentally friendly initiatives. In addition to these, many SAS members organise their own events and donate the proceeds. See similar questions...

Firstly, become an SAS member! This provides us with much-needed funds and the more members we have, the bigger voice we have to lobby for change. Click here to JOIN Let us know of any pollution problems in your area. We rely heavily on being kept informed by our members around the country. The sooner we know about a problem, the more SAS will be able to help. Volunteer your time. Most of the help we need is based at our St Agnes office, but we also need help at some of our actions. See similar questions...

Advanced Technology Attachment (ATA) is a disk drive implementation that integrates the controller on the disk drive itself. Initial interface to ATA was a parallel interface called Parallel ATA or PATA. Serial ATA or SATA is an evolution of the PATA and is a serial link -- a single cable with a minimum of four wires creates a point-to-point connection between devices. Transfer rates for Serial ATA begin at 150MBps. Future rates have been planned for up to 600MBps. See similar questions...

Yes! I've no idea where the misconception that there isn't came from; my development system uses SATA drives. See similar questions...

Advanced Technology Attachment (ATA) is a disk drive implementation that integrates the controller on the disk drive itself. Initial interface to ATA was a parallel interface called Parallel ATA or PATA. Serial ATA or SATA is an evolution of the PATA and is a serial link -- a single cable with a minimum of four wires creates a point-to-point connection between devices. Transfer rates for Serial ATA begin at 150MBps. Future rates have been planned for up to 600MBps. See similar questions...