HP ProLiant DL140 Drive technology overview
HP ProLiant DL140 - G2 Server Manual
 |
View all HP ProLiant DL140 manuals
Add to My Manuals
Save this manual to your list of manuals |
HP ProLiant DL140 manual content summary:
- HP ProLiant DL140 | Drive technology overview - Page 1
SCSI (SAS) ...7 SAS-2 ...8 Second generation Serial ATA (SATA 8 Interconnect bandwidths and drive throughput 8 Improved performance and reliability with RAID 9 Advanced controllers ...9 Solid state drives for servers...9 HP solid state drive reliability requirements 10 NAND over provisioning and - HP ProLiant DL140 | Drive technology overview - Page 2
vibration, so they are better suited than Entry drives for use in multi-drive configurations. For maximum flexibility, Midline drives are available with both Serial ATA (SATA) and Serial Attached SCSI (SAS) interfaces. HP Midline drives are designed for use in high-capacity applications such - HP ProLiant DL140 | Drive technology overview - Page 3
allow any hot-pluggable drive from a family to fit mechanically and electrically with HP ProLiant servers or storage products. This mechanical commonality extends to most SAS-based StorageWorks and HP Integrity server products as well. Thus, mixed HP Enterprise solutions can be supported by a common - HP ProLiant DL140 | Drive technology overview - Page 4
fundamental to disk system performance, is measured in milliseconds (ms). Typical values are 4 to 10 ms. A number of strategies have speed of the actuator and the spindle determine performance in this scenario and set the lower boundary of performance for the drive. The performance of disk drives - HP ProLiant DL140 | Drive technology overview - Page 5
platters per drive increased speed of platter drive failures occurring in a large population of drives in operation for one year. For example, a population of 100,000 drives with an AFR of 1.5% would experience approximately 1,500 failures per year. An AFR calculated from a small number of drives - HP ProLiant DL140 | Drive technology overview - Page 6
that the disk drives it ships remain reliable, meet customer requirements, and integrate seamlessly into HP server and storage systems. The HP processes also ensure continuous improvement in both current and future products and processes. The qualification process consists of four specific steps - HP ProLiant DL140 | Drive technology overview - Page 7
fabric) 512 - 2048 practical SCSI SCSI Hot swap support yes yes yes Drive ID Drives supported Optional ID Used for Mgmt. SATA only worldwide unique ID set at factory SAS or SATA (Can be mixed) worldwide unique ID set at factory SAS or SATA (Can be mixed) Serial Attached SCSI (SAS) SAS is - HP ProLiant DL140 | Drive technology overview - Page 8
entitled "Serial Attached SCSI technology" available at http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01613420/c01613420.pdf. SAS-2 The SAS-2 interface supports a link speed of 6 Gb/s, or 600 MB/s, in each direction. SAS-2 controllers were first introduced with HP ProLiant G6 servers in - HP ProLiant DL140 | Drive technology overview - Page 9
SCSI interfaces. For further details, see the technology brief entitled "HP Smart Array Controller Technology," at http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00687518/c00687518.pdf. Solid state drives for servers Solid state drives represent a new type of storage technology that is now - HP ProLiant DL140 | Drive technology overview - Page 10
, this data is kept in high speed DRAM on the controller and periodically written to metadata regions in the NAND flash array itself. All HP ProLiant SSDs feature power loss protection, which ensures that in the case of power loss to the drive (including hot plug removal) all of this information - HP ProLiant DL140 | Drive technology overview - Page 11
drives. SSDs are differentiated primarily by the read/write workload levels that they are able to support and their endurance, or expected service life. The current 2nd generation HP 6 GB SAS SSDs (2010) Enterprise performance SFF and LFF Hot Plug ML, DL, BL platforms 200 GB + NAND technology - HP ProLiant DL140 | Drive technology overview - Page 12
higher shock and vibration (up to 1000G) Environments requiring drives with lower power consumption (2 watts) HP SSDs are designed for an operational life of over three years, the typical service life for a new server. The NAND memory used in SSDs has a relatively well understood lifespan that is - HP ProLiant DL140 | Drive technology overview - Page 13
/support/Support Manual/c00301688/c00301688.pdf http://h20000.www2.hp.com/bc/docs/support/Support Manual/c01613420/c01613420.pdf Technology brief Solid state drive technology for ProLiant servers http://h20000.www2.hp.com/bc/docs/support/SupportManu al/c01580706/c01580706.pdf HP Serial ATA Drives
-
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8
-
9
-
10
-
11
-
12
-
13
 |
 |
1
Abstract
..............................................................................................................................................
2
Introduction
.........................................................................................................................................
2
Categories of server disk drives
.............................................................................................................
2
Characteristics of disk drives
.................................................................................................................
3
Small form factor and large form factor disk drives
..............................................................................
3
Disk drive capacity
...........................................................................................................................
4
Disk drive performance
.....................................................................................................................
4
Reliability
........................................................................................................................................
5
Drive qualification process
....................................................................................................................
6
Interconnect technology
........................................................................................................................
7
Serial Attached SCSI (SAS)
...............................................................................................................
7
SAS-2
.............................................................................................................................................
8
Second generation Serial ATA (SATA)
................................................................................................
8
Interconnect bandwidths and drive throughput
.....................................................................................
8
Improved performance and reliability with RAID
......................................................................................
9
Advanced controllers
...........................................................................................................................
9
Solid state drives for servers
..................................................................................................................
9
HP solid state drive reliability requirements
........................................................................................
10
NAND over provisioning and wear-levelling
..................................................................................
10
Power loss protection
..................................................................................................................
10
Value, mainstream and performance SSDs
........................................................................................
11
SSD performance
...........................................................................................................................
12
Conclusion
........................................................................................................................................
12
For more information
..........................................................................................................................
13
Call to action
....................................................................................................................................
13
Drive technology overview
technology brief, 3
rd
edition