Code 3 XP9500 Especificaciones Pagina 46
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Table 11 System option modes (continued)
MCU/RCUDefaultDescriptionCategoryMode
Notes:
1. To apply the mode, set the RMF version of mainframe to be
connected to 1.12 or higher.
2. If the OS does not use a supported version, the transfer speed
cannot be displayed correctly.
..OFFThe mode enables or disables the background format function
performed on an unformatted area of a THP/Smart pool.
Thin Provisioning
Thin Provisioning
Z,
896
For the information of operating conditions, refer to Provisioning
Guide for Open Systems or Provisioning Guide for Mainframe
Systems.
Smart Tiers
Smart Tiers Z, Fast
Snap
Mode 896 = ON:
The background format function is enabled.
Mode 896 = OFF (default):
The background format function is disabled.
Note:
1. The mode is applied when a customer requires the background
format for a DP/Smart pool in the environment where new
page allocation (for example, when system files are created
from a host for newly created multiple THP VOLs), frequently
occurs and the write performance degrades because of an
increase in write pending rate.
2. When the mode is set to ON, because up to 42MB/s of ECCG
performance is used, local copy performance may degrade
by about 10%. Therefore, confirm whether the 10%
performance degradation is acceptable or not before setting
the mode to ON.
3. When a Dynamic Provisioning VOL that is used as an external
VOL is used as a pool VOL, if the external pool becomes full
due to the background format, the external VOL may be
blocked.
If the external pool capacity is smaller than the external VOL
(Dynamic Provisioning VOL), do not set the mode to ON.
..OFFBy the combination of SOM 897 and 898 setting, the expansion
width of Tier Range upper I/O value (IOPH) can be changed as
follows.
Smart Tiers, Smart
Tiers Z
897
Mode 897 = ON:
SOM 898 is OFF: 110%+0IO
SOM 898 is ON: 110%+2IO
Mode 897 = OFF (Default)
SOM 898 is OFF: 110%+5IO (Default)
SOM 898 is ON: 110%+1IO
By setting the SOM s to ON to lower the upper limit for each tier,
the gray zone between other tiers becomes narrow and the
frequency of page allocation increases.
Notes:
1. Apply the mode when the usage of upper tier is low and that
of lower tier is high.
2. The mode must be used with SOM 898.
3. Narrowing the gray zone increases the number of pages to
migrate between tiers per relocation.
4. When Tier1 is SSD while SOM 901 is set to ON, the effect
of SOM 897 and 898 to the gray zone of Tire1 and Tier2 is
disabled and the SOM 901 setting is enabled instead. In
46 Functional and operational characteristics
- HP XP P9500 Owner Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 1 Introduction 6
- Controller chassis 7
- Features 9
- High performance 10
- High capacity 10
- Connectivity 11
- High reliability 11
- Economical and quiet 11
- Specifications 12
- System architecture overview 17
- Hardware architecture 17
- RAID implementation overview 17
- Sequential data striping 19
- CU images 20
- Mainframe operations 21
- Mainframe configuration 22
- System option modes 22
- Table 11 System option modes 23
- Open systems operations 51
- Open systems configuration 52
- Remote Web Console 53
- 3 System components 54
- System control panel 56
- Drive chassis 57
- HDD Power Supply4Power Cable3 58
- 58 System components 58
- Cache memory 59
- Memory operation 60
- Data protection 60
- Shared memory 61
- Flash storage chassis 61
- Flash module unit 62
- 4 Power On/Off procedures 66
- Battery backup operations 67
- Cache destage batteries 68
- Battery life 68
- Long term array storage 68
- Battery backup operations 69 69
- 5 Troubleshooting 70
- Insight Remote Support 71
- 6 Support and other resources 74
- Typographic conventions 75
- Rack stability 76
- B Specifications 80
- AC power - PDU options 82
- Environmental specifications 83
- FCC rating label 85
- European Union notice 86
- Japanese notices 87
- Korean notices 87
- Taiwanese notices 88
- Turkish recycling notice 88
- Laser compliance notices 89
- German laser notice 90
- Italian laser notice 90
- Japanese laser notice 90
- Recycling notices 91
- Bulgarian recycling notice 92
- Czech recycling notice 92
- Danish recycling notice 92
- Dutch recycling notice 92
- Estonian recycling notice 93
- Finnish recycling notice 93
- French recycling notice 93
- German recycling notice 93
- Greek recycling notice 94
- Hungarian recycling notice 94
- Italian recycling notice 94
- Latvian recycling notice 94
- Lithuanian recycling notice 95
- Polish recycling notice 95
- Portuguese recycling notice 95
- Romanian recycling notice 95
- Battery replacement notices 96
- French battery notice 97
- German battery notice 97
- Italian battery notice 98
- Japanese battery notice 98
- Spanish battery notice 99
- Glossary 100
- 102 Glossary 102
- 104 Index 104
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