The ST3146855SS is a 146GB hard drive that was manufactured by Seagate. It is a performance-oriented drive that is designed to offer fast data access and high reliability. The drive has a spindle speed of 15,000 rpm and a data transfer rate of up to 300MB/s, making it ideal for use in high-demand applications such as servers and workstations. It also has a large cache size of 16MB, which helps to improve overall performance and reduce seek times. The drive is compatible with both SAS and SATA interfaces, making it easy to integrate into a variety of systems. Overall, the ST3146855SS is a powerful and reliable hard drive that is well-suited for use in demanding environments.
15K RPM, or revolutions per minute, refers to the speed at which a hard drive's spindle spins. A hard drive with a 15K RPM spindle speed is able to access data more quickly than one with a slower spindle speed. This makes it ideal for use in high-demand applications such as servers and workstations, where fast data access is critical. Hard drives with 15K RPM spindle speeds are typically more expensive and have a shorter lifespan than those with slower spindle speeds, but they offer significantly improved performance. They are also typically larger and more powerful than their slower counterparts, making them ideal for use in enterprise-level systems and other demanding environments.
A 3.5 inch HDD, or hard disk drive, is a storage device that uses spinning disks to store and retrieve data. It is characterized by its size, which is 3.5 inches in diameter. This type of hard drive is larger and more powerful than smaller hard drives, such as 2.5 inch drives, and is often used in desktop computers, servers, and other high-performance systems. It is also commonly used in storage arrays and other applications where fast data transfer is important. 3.5 inch HDDs typically have higher capacities, faster spindle speeds, and larger cache sizes than smaller drives, making them well-suited for use in demanding environments. They are also typically more expensive and have a shorter lifespan than smaller drives, but offer significantly improved performance.
General Information ST3146855SS Seagate Cheetah 146GB
Manufacturer: Seagate Technology
MPN : ST3146855SS
Type : Hard Disk Drive (HDD)
Sub-Type : SAS-3GBPS
Product Line: Cheetah
SKU : ST3146855SS
Product Name: Cheetah 15k.5 SAS 3GB/S 146.8GB Hard Drive
Technical Information Seagate Cheetah 146GB
Storage Capacity: 146.8GB
Rotational Speed: 15000 RPM
Buffer: 16 MBytes
Data Transfer Rate: 300MBytes/Sec External Maximum
Data Transfer Rate: 960 Mbits/Sec To 1607 MBits/Sec Internal
Seek Time: 3.50 MS Average Read Typical
Seek Time: 4.0 MS Average Write Typical
Latency: 2.0 MS Average
Interfaces/Ports: 1 X SAS 300 Serial Attached SCSI
Mtbf: 1400000 Hours
Dimension and Weight
Width : 4 Inch
Depth : 5.8 Inch
Height : 1 Inch
Weight : 1.52 LBS
About Refurbished Products
Serial attached SCSI SAS 3gbps hard drives are commonly used in servers and bring with them immense benefits. However, choosing the right hard drive is very important depending on your projects. Avoid putting greater emphasis on the pricing of the hard drives, since it may lead to a complete disaster.
The preserve of the SAS 3Gbps HDD is in servers and high-end workstations where speed considerations are most important. The hard drives are available as 3.5-inch form factor and 2.5-inch form factor depending on your specific applications. These HDDs will process data and complete reads/writes faster than SATA drives – actually, it takes just a fraction of the time. It makes them ideal for enterprise applications since they perform efficiently, faster, and under rigorous conditions. The faster throughput is the idea behind getting SAS hard drives for your applications, seeing that the latest SAS 12Gbps hard disks are super-fast and incorporate RAID hardware controllers.
The throughput of a SAS 3Gbps disk drive is rated at 300 MB/s. Bandwidth typically represents the theoretical maximum level of data that passes through a channel. On the other hand, throughput is the actual measure of how much data actually travels through the channel successfully. Therefore, bandwidth is a theoretical value whereas throughout is the real value.
The key features and capabilities of the popular SAS 3Gbps HDDs are:
- Performance – You will benefit from performance levels that reach 3Gbps (300MB/s throughout), full-duplex transmissions, wide ports for aggregated bandwidth, advanced command queuing, and port aggregation.
- Flexibility – the flexibility of the SAS 3Gbps lies in physical and software compatibility on SATA drives as well as backward-compatibility with SCSI software.
- Scalability – you cannot go wrong with the broad address range allowing connection to physical devices and external storage systems using the long cables and small connectors.
- Reliability and availability – you can achieve point-to-point connections, redundancy paths, and dual active port support with the SAS 3Gbps drives.
We have recommended the SAS 3Gbps to a good number of clients since they are best suited for 24/7 workloads. These hard drives are best suited for servers due to the 100% duty cycle. SAS hot-swap hard drives will always win on the reliability front since they are designed to read/write data throughout the day. The SAS 3Gbps HDD cannot be compared to SATA drives commonly used for desktops that have 20-30% duty cycles. Drive speed is a major determinant of throughput and is measured in RPMs whereby SAS drives will operate at between 7200 and 15000 RPM. For better understanding, the faster a drive rotates, the higher the read/write speeds and the higher the throughput. The net effect will apply for slower drive speeds which negatively impact read/write speed and throughput.
The only downside with the SAS 3Gbps hard drives is the storage capacities available. Generally, SAS hard drive disks have a smaller storage capacity format compared to SATA drives. The common storage sizes available for SAS 3Gbps drives include: 73GB-10K RPM, 146GB-15K RPM, 300GB-15000 RPM, 450GB-15K RPM, 600GB-10K RPM, 1TB1TB-7.2K RPM, and 2TB-7.2K RPM which are ideal for servers and high-end machines used for production content.
SAS cables are required for connection and feature a continuous connector for both power and data. The SAS cable cannot be used to connect SATA controllers using a SATA connector since they carry higher power voltages. A distinctive feature of the SAS cables is that they are more than 30-feet in length compared to SATA cables that can only reach a maximum of 3-feet in length. However, it is possible to connect a SAS drive to a SATA controller using a continuous/SAS connector.
We have different specifications of the SAS 3Gbps hard drive which are ideal for high-performance applications and for highly virtualized environments that typically handle critical applications and high volumes of users.
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