Estou tentando ativar o cache de gravação em um Smart Array P400, embora não haja backup de bateria. Temos um grande UPS em todo o edifício apoiado por um gerador, de modo que a probabilidade de perda de energia é mínima e o desempenho de gravação neste servidor host de VM é terrível. Instalei os drivers e o software HP VMware e usei o hpssacli para ativar o cache de gravação e o cache de gravação sem bateria:
/opt/hp/hpssacli/bin # ./hpssacli controller slot=1 show config detail
Smart Array P400 in Slot 1
Bus Interface: PCI
Slot: 1
Serial Number: PAFGK0P9VX029O
Cache Serial Number: PA82C0J9VX12T7
RAID 6 (ADG) Status: Disabled
Controller Status: OK
Hardware Revision: E
Firmware Version: 7.22
Rebuild Priority: Medium
Expand Priority: Medium
Surface Scan Delay: 15 secs
Surface Scan Mode: Idle
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 0 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 100% Read / 0% Write
Drive Write Cache: Enabled
Total Cache Size: 256 MB
Total Cache Memory Available: 208 MB
No-Battery Write Cache: Enabled
Battery/Capacitor Count: 0
SATA NCQ Supported: True
Number of Ports: 2 Internal only
Encryption Supported: False
Driver Version: 3.6.14
Driver Supports HP SSD Smart Path: False
Internal Drive Cage at Port 1I, Box 1, OK
Power Supply Status: Not Redundant
Serial Number:
Drive Bays: 4
Port: 1I
Box: 1
Location: Internal
Physical Drives
physicaldrive 1I:1:7 (port 1I:box 1:bay 7, SATA, 250 GB, OK, spare)
physicaldrive 1I:1:6 (port 1I:box 1:bay 6, SATA, 250 GB, OK)
physicaldrive 1I:1:5 (port 1I:box 1:bay 5, SATA, 250 GB, OK)
Internal Drive Cage at Port 2I, Box 1, OK
Power Supply Status: Not Redundant
Serial Number:
Drive Bays: 4
Port: 2I
Box: 1
Location: Internal
Physical Drives
physicaldrive 2I:1:4 (port 2I:box 1:bay 4, SATA, 250 GB, OK)
physicaldrive 2I:1:3 (port 2I:box 1:bay 3, SATA, 250 GB, OK)
physicaldrive 2I:1:2 (port 2I:box 1:bay 2, SATA, 250 GB, OK)
physicaldrive 2I:1:1 (port 2I:box 1:bay 1, SATA, 120 GB, OK)
Array: A
Interface Type: SATA
Unused Space: 0 MB
Status: OK
Array Type: Data
Logical Drive: 1
Size: 111.8 GB
Fault Tolerance: 0
Heads: 255
Sectors Per Track: 32
Cylinders: 28722
Strip Size: 128 KB
Full Stripe Size: 128 KB
Status: OK
Caching: Enabled
Unique Identifier: 600508B10010503956583032394F0009
Logical Drive Label: A0199599PAFGK0P9VX029O81A9
Drive Type: Data
LD Acceleration Method: Controller Cache
physicaldrive 2I:1:1
Port: 2I
Box: 1
Bay: 1
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 120 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K647T8B25P5U
Model: ATA GJ0120CAGSP
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 33
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
Array: B
Interface Type: SATA
Unused Space: 0 MB
Status: OK
Array Type: Data
Spare Type: dedicated
Logical Drive: 2
Size: 931.4 GB
Fault Tolerance: 5
Heads: 255
Sectors Per Track: 32
Cylinders: 65535
Strip Size: 64 KB
Full Stripe Size: 256 KB
Status: OK
Caching: Enabled
Parity Initialization Status: Initialization Completed
Unique Identifier: 600508B10010503956583032394F000A
Logical Drive Label: A01986FDPAFGK0P9VX029O8FA7
Drive Type: Data
LD Acceleration Method: Controller Cache
physicaldrive 1I:1:5
Port: 1I
Box: 1
Bay: 5
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648TAC28P4N
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 35
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
physicaldrive 1I:1:6
Port: 1I
Box: 1
Bay: 6
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648T8C25MF2
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 34
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
physicaldrive 2I:1:2
Port: 2I
Box: 1
Bay: 2
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648T8C25MFW
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 35
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
physicaldrive 2I:1:3
Port: 2I
Box: 1
Bay: 3
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648T8B25M9W
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 35
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
physicaldrive 2I:1:4
Port: 2I
Box: 1
Bay: 4
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648T8C25ML9
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 35
Maximum Temperature (C): 58
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
physicaldrive 1I:1:7
Port: 1I
Box: 1
Bay: 7
Status: OK
Drive Type: Spare Drive
Interface Type: SATA
Size: 250 GB
Native Block Size: 512
Firmware Revision: HPG2
Serial Number: K648T8C25MK0
Model: ATA GJ0250EAGSQ
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 31
Maximum Temperature (C): 57
PHY Count: 1
PHY Transfer Rate: 1.5Gbps
Mas como você pode ver, a taxa de cache é 0% para gravações. o que estou perdendo?
Parece que isso se parece com o que você está procurando:
fonte: https://community.hpe.com/t5/ProLiant-Servers-ML-DL-SL/Smart-Array-Controller-P400-cache-ratio/td-p/4018686
Esta é uma solução brega.
O HP Smart Array P400 realmente não respeita a configuração de substituição de cache sem bateria.
Você poderia tentar encontrar uma bateria, mas o servidor é tão antigo que ninguém tinha um estoque de baterias novas e saudáveis.
E como o valor de mercado de um servidor dessa geração é de cerca de US$ 100, é um caso de uso difícil.
Tem certeza de que deseja executar este servidor específico?