HP 2324fc Manual do Utilizador Página 39
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HP StorageWorks Carrier-Grade 2324fc Modular Smart Array user guide 35
10 Cache Status Green — Cache is dirty (contains unwritten data) and operation is
normal.
Off — In a working controller, cache is clean (contains no
unwritten data).
Blinking green — A CompactFlash flush or cache self-refresh is in
progress. Indicates cache activity. (See also If the controller has
failed or does not start, is the Cache Status LED on/blinking?)
If the LED is blinking evenly, a cache flush is in progress. When a
controller module loses power and write cache is dirty (contains
data that has not been written to disk), the super-capacitor pack
provides backup power to flush (copy) data from write cache to
Compact Flash memory. When cache flush is complete, the cache
transitions into self-refresh mode.
If the LED is blinking momentarily slowly, the cache is in a
self-refresh mode. In self-refresh mode, if primary power is restored
before the backup power is depleted (3–30 minutes, depending on
various factors), the system boots, finds data preserved in cache,
and writes it to disk. This means the system can be operational
within 30 seconds, and before the typical host I/O timeout of 60
seconds at which point system failure would cause host-application
failure. If primary power is restored after the backup power is
depleted, the system boots and restores data to cache from
Compact Flash, which can take about 90 seconds.
The cache flush and self-refresh mechanism is an important data
protection feature; essentially four copies of user data are
preserved: one in each controller’s cache and one in each
controller’s CompactFlash.
11 Host Activity Blinking green — At least one host port has I/O activity.
Off — Host ports have no activity.
LED Description Definition
- HP StorageWorks 1
- Contents 3
- About this guide 11
- Rack stability 12
- HP technical support 12
- Customer self repair 12
- Product warranties 13
- Subscription service 13
- HP web sites 13
- Documentation feedback 13
- 1Overview 15
- 16 Overview 16
- 2Components 17
- Hard drive bay numbers 18
- Rear panel components 18
- 13 4 5 12 19
- Super-capacitor pack 20
- 3Installing the enclosures 21
- Obtaining IP values 24
- 28 Installing the enclosures 28
- 30 Installing the enclosures 30
- 4 Connecting hosts 31
- Two servers/two switches 32
- 5 Basic operation 33
- 30 Basic operation 34
- 6 LED descriptions 35
- Hard drive LEDs 36
- Rear panel LEDs 38
- LED Description Definition 39
- Power supply LEDs 41
- 38 LED descriptions 42
- Using the Provisioning Wizard 46
- Testing the configuration 46
- Logging out of SMU 46
- 8Troubleshooting 47
- Diagnostic steps 48
- 46 Troubleshooting 50
- Transporting Cache 52
- 50 Troubleshooting 54
- Sensor locations 55
- Power supply sensors 55
- Cooling fan sensors 55
- Temperature sensors 55
- A. Parts catalog 57
- DB9-M to DB9-F (CLI cable) 59
- Mandatory 59
- Optional 59
- 60 Parts catalog 64
- Safety requirements 65
- Management host requirements 66
- Physical requirements 67
- Environmental requirements 67
- Electrical requirements 68
- C Electrostatic discharge 69
- 66 Electrostatic discharge 70
- Regulatory compliance 71
- Laser product label 73
- European Union notice 73
- BSMI notice 74
- Japanese notice 74
- Korean notices 74
- Battery replacement notice 74
- Power cords 75
- Japanese power cord notice 75
- Electrostatic discharge 75
- Grounding methods 76
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