Seagate SV35 Beat the Heat: Designing SDVR Systems for Optimal Thermal Perform
Seagate SV35 - Series 500 GB Hard Drive Manual
 |
UPC - 000068216948
View all Seagate SV35 manuals
Add to My Manuals
Save this manual to your list of manuals |
Seagate SV35 manual content summary:
- Seagate SV35 | Beat the Heat: Designing SDVR Systems for Optimal Thermal Perform - Page 1
along the way. Surveillance digital video recording (SDVR) system reliability has proven challenging for some, particularly in terms of the hard disc drive (HDD). This is primarily due to the harsh environmental and operational factors (poor ventilation, 24x7 write workloads) typical of SDVR disc - Seagate SV35 | Beat the Heat: Designing SDVR Systems for Optimal Thermal Perform - Page 2
/head assembly. Either of these scenarios can result in impaired performance, compromised data integrity and greater risk of drive failure. Calculating Your HDD's Thermal Environment When determining the thermal environment of a SDVR system, it's important to perform temperature measurements under - Seagate SV35 | Beat the Heat: Designing SDVR Systems for Optimal Thermal Perform - Page 3
increasingly important role in minimizing SDVR system heat challenges. Leveraging the ATA-7 command set enables drives to efficiently address both video- and data-specific tasks. HDD SPIN DOWN: At any given time, only one HDD in a typical SDVR system is actively writing video images. Though the rest - Seagate SV35 | Beat the Heat: Designing SDVR Systems for Optimal Thermal Perform - Page 4
are either trademarks or registered trademarks of their owners. One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Seagate reserves the right to change, without notice, product offerings
-
1 -
2 -
3 -
4
 |
 |
Beat the Heat: Designing SDVR Systems for
Optimal Thermal Performance
Introduction
While the popularity of digital video surveillance systems continues to soar (J.P. Freeman Co. estimates worldwide annual growth at
approximately 42 percent), there have been challenges along the way. Surveillance digital video recording (SDVR) system reliability
has proven challenging for some, particularly in terms of the hard disc drive (HDD). This is primarily due to the harsh environmental
and operational factors (poor ventilation, 24x7 write workloads) typical of SDVR disc drive applications.
Fortunately, following a few simple guidelines for optimal SDVR system design and deployment will substantially enhance drive
reliability. The single greatest threat to disc drive longevity is heat. Not only is heat a leading cause of outright component failure, it
can also degrade system performance and stability.To understand why heat management is so critical to disc drive reliability, it’s
useful to briefly review the fundamentals of drive operation.
Disc Drive Basics
HDD storage relies on magnetism to store and retrieve
data on the drive’s platter(s). Tiny independent
magnetic cells in the platter’s coating are magnetically
reoriented into a specific pattern by the drive’s
read/write head to write data, and those cells’
magnetic orientation can be subsequently detected by
that same head to read back that data.
This arrangement is made possible by the
extraordinary proximity of the read/write head to the
platter surface. Riding a scant few nanometers above
the rapidly spinning platter (see Figure 1), the complex
read/write head system has been likened to a Boeing
747 flying at 600 miles per hour—six inches off the
ground.
The strength of any object’s magnetic field rapidly falls
off as distance from it increases; this principle applies
TP552 • From: Global Product Marketing • May 2006
Technology Paper
Figure 1: HDD flying height compared to common environmental contaminants
0.07 μm
Flying
Height
0.5 μm
Spittle
Mark
4.0 μm
Finger Print
Smudge
6.0 μm
Smoke
Particle
10.0 μm
Dust
Particle