Is a scsi hard drive faster than an IDE hard drive on a regular PC?

This is relative,,, SCSI disk must have a matching controller, such as 320M, the so-called SCSI is faster than IDE refers to the throughput speed, if you want to use SCSI on the PC, it is not much faster because the system bus performance of the PC is limited. There's nothing to play with 80M things.,To be valuable, you have to find at least 160 and now 320 is a lot on the Internet.,To give full play to the power of SCSI, it is recommended to find a server board to play! The machine I'm playing now is 2*P3 sliver+18G*4+Litai GF2MX400 It's OK to use.,Of course, I don't like games.,But it's okay to play some Imperial Red Police.,I'm usually used to do graphic design and OK.,It's no different from the new machine now.,Sometimes open PS cdr word pdf illus at the same time and a number of web pages and 3-5 QQ and msn are very smooth。

Look at the speed must be SCSI reading disk fast,No doubt,But you also have to consider the cache of the hard disk,The same level of SCSI is no problem,If it's just an ordinary PC,There's no need to go to the SCSI disk,It's not much faster,SCSI seems to be more used by the server。

PC with SCSI first look at the motherboard supports SAS, as long as it is supported, it must be fast in theory.

Generally, it is blown well, and there is not much difference in use.

Is this the interface?

SCSI hard disk ** is very high, if you buy a hard disk**, it is better to upgrade the computer as a whole, change a motherboard that can support SATA, and then use SATA hard disk in the family is enough.

1. The appearance of SCSI interface hard disk (mechanical hard disk) is somewhat similar to that of ordinary hard disk interface, the interface speed is fast, mainly used for servers, the performance of the hard disk itself is also relatively high, the hard disk speed is fast, the cache capacity is large, the CPU occupancy is low, and it supports hot swapping.

2. Solid-state hard disk (SSD hard disk) is a hard disk made of solid-state electronic memory chip array, and the interface generally adopts SATA-2 interface and SATA-3 interface, and the read and write speed is faster than that of mechanical hard disk, but the capacity of SSD in the current market is limited (128G).

3. The biggest advantage of SSD solid state drive is that it can be moved, and the data protection is not controlled by power supply, and can be adapted to various environments, but the service life is not high, and it is suitable for individual users.

4. If you want to use a server, it is better to choose a hard disk with SCSI interface.

The comparison can be made as follows:

Solid state drives. Quick start, no motor to accelerate the process of rotation.

2.No head, fast random read, very small read delay.

3.Relatively fixed read time. Because the addressing time is independent of where the data is stored, disk fragmentation does not affect the read time.

4.DRAM-based SSDs have extremely fast write speeds.

5.No noise. Because there is no mechanical motor and fan, the noise level is 0 dB when working. Some high-end or high-capacity products are equipped with fans, so they still generate noise.

SCSI hard drives.

1. Fast speed. The hard disk used by the server can spin fast, which can reach 7,200 or 10,000 revolutions per minute, or even higher; It is also configured with a large (typically 2MB or 4MB) write-back cache; The average visit time is relatively short; The external and internal transmission rates are higher.

2. High reliability. Because the server hard disk is running almost 24 hours a day, it is subject to a huge workload. It can be said that if there is a problem with the hard drive, the consequences are unimaginable.

As a result, today's hard drives are powered by technology (self-monitoring, analysis, and reporting), and hard drive manufacturers are using their own unique advanced technologies to ensure data security.

3. Use SCSI interfaces more. Most servers use SCSI hard disks with high data throughput and extremely low CPU usage.

4. It can support hot swapping. Hot swap is a hard disk installation method supported by some servers, which allows you to pull out or insert a hard disk without server downtime, and the operating system will automatically recognize the changes to the hard disk.

These are two types of hard disks, you can't simply compare which one is better, because the place where you use it is different, if you are old hard disks, in terms of parameters, it is good to be SCSI, because it is a server hard disk, which is much better than ordinary home hard disks; If it's a new hard drive, SCSI is not as good as a new SATA.

1. SATA is the mainstream home hard disk interface. The design life of a typical home hard drive is 3 years. Enterprise-class hard drives have a longer lifespan, and SATA interfaces are also available, but the speed is up to 7200 rpm.

2. SCSI hard disk is an old-fashioned parallel server hard disk, which starts at 10,000 revolutions, and the speed is faster than most SATA hard disks. However, with the advancement of SATA hard disks, especially the emergence of solid-state drives, the speed of SCSI hard disks has been eliminated.

3. There is also a serial port hard disk on the server, which is a SAS interface. The hard disk with the SAS interface is faster than the SSD with the SATA interface, and it has reached 10,000 revolutions.

4. SCSI and SAS hard disks can only be used on server motherboards, and home motherboards cannot be used. Therefore, it is not a competitive relationship with SATA hard disk and cannot be used universally.

Of course, SSDs with SSDs are better, but notebooks with SSDs are also relatively expensive.

SCSI, on the other hand, is a hard disk that uses a serial interface.

Solid-state drive transmission is very fast But it is not mature now, it is not popular, and it is quite expensive, and the capacity is not large, 120G is more than 4,000 yuan, there is no need.

Categories: Computer, Networking, >> Hardware.

Analysis: The difference between SCSI and IDE

In addition to SCSI, IDEs are also an extremely commonly used interface. From the point of view of ease of use, IDE is more suitable for ordinary users, and PC users not only need to configure few peripherals, but also do not have high speed requirements, so it is more appropriate to choose IDE interface. In addition, IDE also has the characteristics of high performance ratio and wide application.

Although the SCSI interface has many unparalleled features, no matter from which point of view, the interface and the peripherals that use the interface are too expensive for the average user to afford, which determines the limitations of its actual use range.

The way of working requires the full participation of the CPU, and the CPU can not perform other operations when reading and writing data, which will naturally lead to a great slowdown in the system response in the multitasking operating system of Windows95 NT. The SCSI interface controls the data read and write operations through an independent high-speed SCSI card, so the CPU does not have to waste time waiting, which can obviously improve the overall performance of the system. However, the current IDE interface has also made great improvements to improve this problem, and can use DMA mode instead of PIO mode to read and write, and the exchange of data is responsible for DMA channels, which can greatly reduce the CPU occupancy.

Still, comparing the CPU usage of SCSI and IDE shows that SCSI still has a considerable advantage.

The expandability is greater than the IDE, generally each IDE system can have 2 IDE channels, a total of 4 IDE devices, and the SCSI interface can connect 7 15 devices, which is much more than the IDE, and the connected cables are much longer than the IDE.

3.Although SCSI equipment is higher, the performance of SCSI is more stable, durable, and reliable than IDE.