我有 HP Microserver N54L，直到最近我才开始使用集成软件 RAID，没有出现任何问题。我的 RAID 阵列有 2 个 WD Black 和 2 个 WD Red（非专业版）磁盘。我的主板上也有 SSD（这并不重要，只是为了弄清所有事实）。
我购买了带有 256MB 内存和电池背面写入缓存模块的 HP P410。
我使用的是 esxi 5.1，并且有一台 Windows 虚拟机。在这台 Windows 机器上，我的读取速度非常糟糕（最高只能达到 40-60 MB/s），写入速度还算可以（大约 100MB/s），但仍然比我使用集成 raid 时慢。
例如，这是将一个大文件从 raid 复制到 ssdhttp://img.hihi.si/Upload/vYbD.png:(
这是我的 raid 控制器和阵列信息
~ # esxcli hpssacli cmd -q "ctrl all show config detail"
Smart Array P410 in Slot 1
Bus Interface: PCI
Slot: 1
Serial Number: PACCRCN80ZK1TXH
Cache Serial Number: PACCQID11090TB9
RAID 6 (ADG) Status: Disabled
Controller Status: OK
Hardware Revision: C
Firmware Version: 6.60
Rebuild Priority: Medium
Expand Priority: Medium
Surface Scan Delay: 15 secs
Surface Scan Mode: Idle
Queue Depth: Automatic
Monitor and Performance Delay: 60 min
Elevator Sort: Enabled
Degraded Performance Optimization: Disabled
Inconsistency Repair Policy: Disabled
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 0 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 50% Read / 50% Write
Drive Write Cache: Enabled
Total Cache Size: 256 MB
Total Cache Memory Available: 144 MB
No-Battery Write Cache: Enabled
Cache Backup Power Source: Batteries
Battery/Capacitor Count: 1
Battery/Capacitor Status: OK
SATA NCQ Supported: True
Number of Ports: 2 Internal only
Encryption Supported: False
Driver Name: HP HPSA
Driver Version: 5.0.0
Driver Supports HP SSD Smart Path: False
Array: A
Interface Type: SATA
Unused Space: 0 MB
Status: OK
Array Type: Data
Logical Drive: 1
Size: 1.8 TB
Fault Tolerance: 1+0
Heads: 255
Sectors Per Track: 32
Cylinders: 65535
Strip Size: 256 KB
Full Stripe Size: 512 KB
Status: OK
Caching: Enabled
Unique Identifier: 600508B1001CC56A2CBC714D023D29CD
Logical Drive Label: A002F51APACCRCN80ZK1TXH0967
Mirror Group 0:
physicaldrive 2I:0:5 (port 2I:box 0:bay 5, SATA, 1 TB, OK)
physicaldrive 2I:0:6 (port 2I:box 0:bay 6, SATA, 1 TB, OK)
Mirror Group 1:
physicaldrive 2I:0:7 (port 2I:box 0:bay 7, SATA, 1 TB, OK)
physicaldrive 2I:0:8 (port 2I:box 0:bay 8, SATA, 1 TB, OK)
Drive Type: Data
LD Acceleration Method: Controller Cache
physicaldrive 2I:0:5
Port: 2I
Box: 0
Bay: 5
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 1 TB
Native Block Size: 512
Firmware Revision: 05.01D05
Serial Number: WD-WCATR3871895
Model: ATA WDC WD1002FAEX-0
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 40
Maximum Temperature (C): 53
PHY Count: 1
PHY Transfer Rate: 3.0Gbps
physicaldrive 2I:0:6
Port: 2I
Box: 0
Bay: 6
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 1 TB
Native Block Size: 512
Firmware Revision: 05.01D05
Serial Number: WD-WCATR3904352
Model: ATA WDC WD1002FAEX-0
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 40
Maximum Temperature (C): 44
PHY Count: 1
PHY Transfer Rate: 3.0Gbps
physicaldrive 2I:0:7
Port: 2I
Box: 0
Bay: 7
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 1 TB
Native Block Size: 4096
Rotational Speed: 5400
Firmware Revision: 01.01A01
Serial Number: WD-WCC4J4478782
Model: ATA WDC WD10EFRX-68P
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 32
Maximum Temperature (C): 34
PHY Count: 1
PHY Transfer Rate: 3.0Gbps
physicaldrive 2I:0:8
Port: 2I
Box: 0
Bay: 8
Status: OK
Drive Type: Data Drive
Interface Type: SATA
Size: 1 TB
Native Block Size: 4096
Firmware Revision: 01.01A01
Serial Number: WD-WCC1U5116513
Model: ATA WDC WD10EFRX-68J
SATA NCQ Capable: True
SATA NCQ Enabled: True
Current Temperature (C): 30
Maximum Temperature (C): 36
PHY Count: 1
PHY Transfer Rate: 3.0Gbps
SEP (Vendor ID PMCSIERA, Model SRC 8x6G) 250
Device Number: 250
Firmware Version: RevC
WWID: 50014380118D3DBF
Vendor ID: PMCSIERA
Model: SRC 8x6G
有什么想法吗？我需要提供更多信息吗？
答案1
答案2
我在HP ML350 G6 p410i raid控制器中遇到了一种情况，首先我在Raid 5中构建了三个磁盘，速度比SATA III磁盘快，大约600-800M的读取和相同的写入速度，这对我来说是惊人的，但是当我调整到4个磁盘raid 5时，它读取速度仍然更快，但写入变得像通常的磁盘一样非常慢，最后，我发现了问题： 我偶尔会点击读/写缓冲区设置，读取率为 100%，写入率为 0%，这就是问题所在，只需 50% 到 50% 或 60% 到 40%，它又快了。配置在 HP Stmart Storage Administrator