查看服务器是否配置RAID以及HP RAID详情
有时候新接手维护服务器，或者在考虑当前服务器容灾备份机制时，首先得知道服务器到底是否存在RAID卡，是否已经配置RAID。最简单的方式就是重启服务器，然后根据提示查看相关信息。但很多情况下不能随便重启机器，那么我们可以通过特定的操作系统命令，或者查看相关日志得到该信息。注：此处讨论的是硬件RAID，不包括软件RAID
1、查看硬件是否支持RAID：
# lspci | grep RAID
02:00.0 RAID bus controller: Hewlett-Packard Company Smart Array Gen8 Controllers (rev 01)
该命令查看了当前服务器是否存在RAID控制器，如果输出类似上面的信息，则表示硬件支持RAID，但实际是否配置以及如何配置还得进一步确定。
2、查看系统是否配置RAID
# dmesg |grep -i raid
dracut: rd_NO_DM: removing DM RAID activation
dracut: rd_NO_MD: removing MD RAID activation
hpsa 0000:02:00.0: RAID device c2b3t0l0 added.
scsi 2:3:0:0: RAID HP P420i 3.42 PQ: 0 ANSI: 5
如上所示，在系统日志中可以看到存在RAID设备，以及设备型号等信息。或者通过以下命令查看:
# cat /proc/scsi/scsi
Attached devices:
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: hp Model: DVDRAM GT80N Rev: EA02
Type: CD-ROM ANSI SCSI revision: 05
Host: scsi2 Channel: 03 Id: 00 Lun: 00
Vendor: HP Model: P420i Rev: 3.42
Type: RAID ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: HP Model: LOGICAL VOLUME Rev: 3.42
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 01
Vendor: HP Model: LOGICAL VOLUME Rev: 3.42
Type: Direct-Access ANSI SCSI revision: 05
该命令显示了当前系统做完RAID后的磁盘个数，其中第二项显示为RAID磁盘，但没有显示RAID级别。
3、查看服务器RAID磁盘详情
该部分内容通常无法通过系统自带命令或日志进行查询，需要使用RAID设备厂商提供的专用软件查看，此处以HP（惠普）服务器为例，进行演示。
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下载工具
可通过官方网站下载工具 hpacucli-9.40-12.0.x86_64.rpm 点击此处 -
安装工具
# rpm -ivh hpacucli-9.40-12.0.x86_64.rpm -
工具使用
3.1 RAID 磁盘概览
# hpacucli ctrl all show config Smart Array P420i in Slot 0 (Embedded) (sn: 50014380263D1E40) array A (SAS, Unused Space: 0 MB) logicaldrive 1 (279.4 GB, RAID 1, OK) physicaldrive 1I:2:1 (port 1I:box 2:bay 1, SAS, 300 GB, OK) physicaldrive 2I:2:5 (port 2I:box 2:bay 5, SAS, 300 GB, OK) array B (SAS, Unused Space: 0 MB) logicaldrive 2 (1.1 TB, RAID 0, OK) physicaldrive 1I:2:2 (port 1I:box 2:bay 2, SAS, 300 GB, OK) physicaldrive 1I:2:3 (port 1I:box 2:bay 3, SAS, 300 GB, OK) physicaldrive 2I:2:6 (port 2I:box 2:bay 6, SAS, 300 GB, OK) physicaldrive 2I:2:7 (port 2I:box 2:bay 7, SAS, 300 GB, OK) SEP (Vendor ID PMCSIERA, Model SRCv8x6G) 380 (WWID: 50014380263D1E4F)3.2 RAID磁盘详情
# hpacucli ctrl all show config detail Smart Array P420i in Slot 0 (Embedded) Bus Interface: PCI Slot: 0 Serial Number: 50014380263D1E40 Cache Serial Number: PBKUC0BRH4J3G6 RAID 6 (ADG) Status: Disabled Controller Status: OK Hardware Revision: B Firmware Version: 3.42 Rebuild Priority: Medium Expand Priority: Medium Surface Scan Delay: 3 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: 15 secs Cache Board Present: True Cache Status: OK Cache Ratio: 10% Read / 90% Write Drive Write Cache: Disabled Total Cache Size: 1024 MB Total Cache Memory Available: 816 MB No-Battery Write Cache: Disabled Cache Backup Power Source: Capacitors Battery/Capacitor Count: 1 Battery/Capacitor Status: OK SATA NCQ Supported: True Spare Activation Mode: Activate on drive failure Controller Temperature (C): 68 Cache Module Temperature (C): 36 Capacitor Temperature (C): 28 Array: A Interface Type: SAS Unused Space: 0 MB Status: OK Array Type: Data Logical Drive: 1 Size: 279.4 GB Fault Tolerance: 1 Heads: 255 Sectors Per Track: 32 Cylinders: 65535 Strip Size: 256 KB Full Stripe Size: 256 KB Status: OK Caching: Enabled Unique Identifier: 600508B1001C66AE8BFFC07021D139D8 Disk Name: /dev/sda Mount Points: /boot 200 MB, / 279.2 GB OS Status: LOCKED Logical Drive Label: A84609D850014380263D1E4034C5 Mirror Group 0: physicaldrive 1I:2:1 (port 1I:box 2:bay 1, SAS, 300 GB, OK) Mirror Group 1: physicaldrive 2I:2:5 (port 2I:box 2:bay 5, SAS, 300 GB, OK) Drive Type: Data Caching Association: None physicaldrive 1I:2:1 Port: 1I Box: 2 Bay: 1 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD6 Serial Number: EB01PD21MUW01306 Model: HP EG0300FBDSP Current Temperature (C): 35 Maximum Temperature (C): 42 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 physicaldrive 2I:2:5 Port: 2I Box: 2 Bay: 5 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD6 Serial Number: EB01PCC1L8861251 Model: HP EG0300FBDSP Current Temperature (C): 34 Maximum Temperature (C): 41 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 Array: B Interface Type: SAS Unused Space: 0 MB Status: OK Array Type: Data Logical Drive: 2 Size: 1.1 TB Fault Tolerance: 0 Heads: 255 Sectors Per Track: 32 Cylinders: 65535 Strip Size: 256 KB Full Stripe Size: 256 KB Status: OK Caching: Enabled Unique Identifier: 600508B1001CD6F301652A600B3E372A Disk Name: /dev/sdb Mount Points: /mnt/u01 1.1 TB OS Status: LOCKED Logical Drive Label: A846B29850014380263D1E403EF7 Drive Type: Data Caching Association: None physicaldrive 1I:2:2 Port: 1I Box: 2 Bay: 2 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD1 Serial Number: ECA1PAC00GH11050 Model: HP EG0300FBDSP Current Temperature (C): 34 Maximum Temperature (C): 44 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 physicaldrive 1I:2:3 Port: 1I Box: 2 Bay: 3 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD6 Serial Number: EB01PD21MUYN1306 Model: HP EG0300FBDSP Current Temperature (C): 33 Maximum Temperature (C): 45 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 physicaldrive 2I:2:6 Port: 2I Box: 2 Bay: 6 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD6 Serial Number: EB01PD21MVFN1306 Model: HP EG0300FBDSP Current Temperature (C): 32 Maximum Temperature (C): 43 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 physicaldrive 2I:2:7 Port: 2I Box: 2 Bay: 7 Status: OK Drive Type: Data Drive Interface Type: SAS Size: 300 GB Rotational Speed: 10000 Firmware Revision: HPD6 Serial Number: EB01PD21MVF51306 Model: HP EG0300FBDSP Current Temperature (C): 31 Maximum Temperature (C): 44 PHY Count: 2 PHY Transfer Rate: 6.0Gbps, Unknown Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6 SEP (Vendor ID PMCSIERA, Model SRCv8x6G) 380 Device Number: 380 Firmware Version: RevB WWID: 50014380263D1E4F Vendor ID: PMCSIERA Model: SRCv8x6G
上图所示，服务器做了两个RAID，分别是Array A 和 Array B，前者由两块硬盘组建了RAID 1，后者由四块硬盘组建了RAID 0。