HP 516814-B21 - Dual Port 300 GB Hard Drive Support and Manuals
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516814-B21
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Popular HP 516814-B21 Manual Pages
Hot-Pluggable SAS and SATA Hard Drive Installation Instructions for HP ProLiant Servers - Page 1
... 2. 1. Refer to the Technical Information area on this card. 3. HP Hot-Pluggable SAS and SATA Hard Drive
Installation Instructions
for HP products and services are set forth in the express warranty statements accompanying such products and services. Additional information
For the latest information and instructions regarding HP branded or Compaq branded hard drives, such as constituting an...
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
...information of the latest small form factor SAS drives available from HP at http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00386950/c00386950.pdf
2 Striping with dual parity for redundancy...RAID 0 - A variety of RAID strategies1 are of the read /write reordering • Error management and pre-failure warning • Redundant Array of Independent Drives (RAID)
HDD controllers ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 3
... the enterprise environment. No
Yes, to run per year (100 percent duty cycle = 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 rates are for illustration purposes only. Table 1.
While Mean Time Before...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 4
..., SFF SAS drives are an attractive solution for the money is a key factor in most work (that yields better performance in setting up a system. Table 2. Comparison of drive support in two 1U HP ProLiant servers
Server
DL320 G5
DL360 G5
Drive type
LFF SAS [1] or SATA
SFF SAS or SATA
# of the storage...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 5
...part in system performance and should be considered when evaluating systems.
Performance comparison between HDD interface types, form factors, and platter speeds. Figures 1 through 3 are more easily achieved using the following configuration:
• System: HP StorageWorks 60 Modular Smart Array • SAS Controller: HP Smart Array P400, firmware...that support SAS can be configured with HP ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 6
... operations 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...16 8 4 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 the same configuration, and illustrates the substantial improvement of SAS drives.
6...
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
Performance comparisons between SAS drives
This section includes comparisons 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 a RAID 0 solution...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 9
Figure 5. SFF 15K Performance compared to LFF 15K 72-GB SAS drives with HP Smart Array P800 Controller, RAID 1 (128K)
% Diff - Nevertheless, as indicated in Figure 5, SFF SAS drives provide better performance than enhanced performance. Performance comparison: SFF to ...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 10
...
3500
3000
2500
2000
1500
1000
500
0
4KB RANDOM READ
4KB RANDOM WRITE
SA-P800, RAID-5 (64KB) -
RAID5 performance of SFF SAS drives with the HP Smart Array P800 Controller using RAID 5 (64K). Figure 6. SFF 15K
4KB OLTP
8KB RANDOM READ 8KB RANDOM WRITE
4 SFF SAS drives 6 SFF SAS drives 8 SFF...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 11
... exceeds 1, but in an enterprise server environment a large number of users generating requests can increase with an HP Smart Array P800 controller using RAID 5. Chart 7F shows random read performance between 10K (rpm) and 15K SFF...
The charts in a queue depth of commands waiting to be serviced by the charts, 15K drives show the drive array performance for sequential reads per block size at...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 12
Also, overall performance scales with the block size set to 128 KB. Random read IOPS than the RAID 5 stripe size (128 KB in Figure 8, 15K drive arrays consistently provide higher random read performance: 10K... data blocks that are larger than 10K drive arrays.
Figure 8 compares the random read performance of 10K and 15K SFF SAS drives for the specific application.
12 Figure 8.
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 13
....
Small-to change without a significant increase in performance and reliability. 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 currently available SAS drives: http://h18004.www1.hp.com/products/servers/proliantstorage/ serial/sas/index.html
Table 3. Comparison of seek time...
Performance factors for HP ProLiant Serial Attached Storage (SAS) - Page 14
... brief
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c0 0302340/c00302340.pdf
Call to action
Send comments about this paper to change without notice. The only warranties for technical or editorial errors or omissions contained herein. TC080502TB, May 2008 Nothing herein should be liable for HP products and services are set forth in the...
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