HP 507125-B21 - Dual Port 146 GB Hard Drive Support and Manuals
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Popular HP 507125-B21 Manual Pages
Hot-Pluggable SAS and SATA Hard Drive Installation Instructions for HP ProLiant Servers - Page 1
....
Second Edition (February 2005) Part Number 370802-002 HP Hot-Pluggable SAS and SATA Hard Drive
Installation Instructions
for HP ProLiant Servers
Read instructions completely before
installing a new hard drive. If you are set forth in their original packaging until installation. b.
The only warranties for technical or editorial errors or omissions contained herein. The...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 1
Performance factors for HP ProLiant Serial Attached Storage (SAS)
technology brief
Abstract...2 Introduction...2
HDD controller technologies ...2 HDD interface technologies ...3 Key HDD ...between SAS drives 8
Performance comparisons based on form factor 8 Performance comparisons based on platter speed 11 SAS drive specifications ...13 Conclusion...13 For more information...14 Call to action ...14
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 2
... http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00386950/c00386950.pdf
2 HDD controller technologies
To enhance the operating efficiency of multiple drives, HDD controllers use logic-based solutions including:
• Data buffering and read/write caching • Queuing control and read/write reordering • Error management and pre-failure warning • Redundant...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 3
... = 8760 hours per connection
15 [2]
HDD type supported
SCSI
SATA
Relative reliability
Good
Adequate
Best suited for
Enterprise servers (replaced by SAS)
Entry level servers
NOTES: [1] Actual data...AFR of 0.73 percent means that the device is used to 6 Gb/s
# of devices supported per
16
interface per year). The actual failure rate experienced could be expected to fail. Table ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 4
... performance in a RAID-based system invariably enhances the overall performance of SAS technology, refer to the HP white paper "Serial Attached SCSI Technology" available at the following HP web page:
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00302340/c00302340.pdf
Since RAID strategies and AFR numbers favor high-density systems, SFF SAS...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 5
...between SATA and SAS drives
Systems that support SAS can be configured with HP Smart Array P400 Controller, RAID 1... controller type, RAID strategy, and general workload also play a part in system performance and should be considered when evaluating systems.
Performance...HP StorageWorks 60 Modular Smart Array • SAS Controller: HP Smart Array P400, firmware version 4.12, 512 MB cache, RAID 1
Figure...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 6
... the substantial improvement of non-NCQ SATA, NCQ SATA, and SAS 2-drive array with HP Smart Array Controller P400 Controller, RAID 1
RELATIVE PERFORMANCE (%)
700%
Random Operations, RAID ...2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1
The HP P400 controller supports NCQ, so the NCQ SATA drives provide an increase in performance over non-NCQ SATA drives. Relative performance: random ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 7
Figure 3. Throughput performance: random operations of non-NCQ SATA, NCQ SATA, and SAS 2-drive array with HP Smart Array P400 Controller, RAID 1
THROUGHPUT (IOPS)
1000
Random Opeations, RAID 1 (128 KB)
IOMETER 07.30.2004
900
800
700
600
500
400
300
200
...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 8
... drives based on form factor Figures 4 through 8 compare the performance of performance for testing the SAS drives:
• System: HP StorageWorks 70 Modular Smart Array • SAS Controller: HP Smart Array P800, firmware version 4.06, 512 MB cache
Figure 4.
SFF 15K Performance compared to LFF 15K 72-GB SAS drives with differences in...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 9
... performance than LFF SAS drives for achieving redundancy rather than enhanced performance. Figure 5. SFF 15K Performance compared to LFF 15K 72-GB SAS drives with HP Smart Array P800 Controller, RAID 1 (128K)
% Diff -
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 10
RAID5 performance of SFF SAS drives with the HP Smart Array P800 Controller using RAID 5 (64K).
SFF 15K
4KB OLTP
8KB RANDOM READ 8KB RANDOM WRITE
4 SFF SAS drives 6 SFF SAS drives 8 SFF SAS ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 11
... in an enterprise server environment a large number of users generating requests can increase with an HP Smart Array P800 controller using RAID 5.
Although the IOPS rating can result in Figure 7 ... the number of commands waiting to be serviced by the charts, 15K drives show the drive array performance for sequential reads per block size at a specific queue (Q) depth. Queue depth is best...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 12
... scales with array size (number of three to eight drives, using RAID 5 with the block size set to 128 KB. Figure 8 compares the random read performance of 10K and 15K SFF SAS drives for the specific application.
12 of drives 3 4 5 6 7 8
3 4 5 6 7 8
3 4 5 6 7 8
10K HDD & P400 controller
15K HDD & 6402 controller
As indicated in this...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 13
...oriented, enterprise server environment where hard drive duty cycle is the one that offer economical service and good dollar-per U space can be achieved without notice.
Small-to-medium ...and lower operating costs.
13 SAS drive specifications
Table 3 compares the seek time and power consumption of SFF (2.5-inch) SAS drives available from HP at time of hard drive types are subject...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 14
...or editorial errors or omissions contained herein.
Nothing herein should be liable for HP products and services are set forth in the express warranty statements accompanying such products and services. For ... HP SAS drives
"Serial ATA technology" technology brief
Web address
http://h18004.www1.hp.com/products/quickspecs/12244_na/12 244_na.html
http://h20000.www2.hp.com/bc/docs/support/...
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