Raid
在 ProLiant DL380 G6 上執行的 VMware ESXi 5.5 上未啟用 HP Smart Array P400 寫入記憶體
即使沒有備用電池，我也在嘗試在 Smart Array P400 上啟用寫入記憶體。我們有一個由發電機支持的大型建築物範圍的 UPS，因此斷電的可能性很小，並且此 VM 主機伺服器上的寫入性能很糟糕。我已經安裝了 HP VMware 驅動程序和軟體，並使用 hpssacli 打開了寫入記憶體和無電池寫入記憶體：
/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但正如您所見，寫入的記憶體比率為 0%。我錯過了什麼？
看起來這看起來像您正在尋找的東西：
ctrl slot=0 cacheratio=50/50
這是一個俗氣的解決方案。
HP Smart Array P400 並不真正支持無電池記憶體覆蓋設置。
- 但是使用 Smart Array P400 意味著您使用的是 HP ProLiant G5 伺服器…
- 這意味著您使用的是 2005-2008 時代的東西…… 10 歲。
- 這表明您正在執行 VMware 不再支持的東西……
- SATA 驅動器在該控制器上將速度降低到 1.5Gbps（而不是 3Gbps 或 6Gbps）；SAS驅動器的一半速度…
- 這意味著您的性能將非常非常糟糕……即使有寫入記憶體。
您可以嘗試尋找電池，但伺服器太舊了，沒有人有新的健康電池庫存。
由於那一代伺服器的市場價值約為 100 美元，因此這是一個艱難的案例。
您確定要執行此特定伺服器嗎？