【linux】raid 分析

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Adapter: 0

Product Name: PERC H700 Integrated

Memory: 1024MB

BBU: Present

Serial No: 14O008Y

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Number of DISK GROUPS: 1

 

DISK GROUPS: 0

Number of Spans: 4

SPAN: 0

Span Reference: 0x00

Number of PDs: 2

Number of VDs: 1

Number of dedicated Hotspares: 0

Virtual Disk Information:

Virtual Disk: 0 (Target Id: 0)

Name:Virtual Disk 0

RAID Level: Primary-1, Secondary-0, RAID LevelQualifier-0

Size:544.5 GB

State: Optimal

Stripe Size: 64 KB

Number Of Drives per span:2

Span Depth:4

Default Cache Policy: WriteBack,ReadAdaptive, Direct, Write Cache OK if Bad BBU

Current Cache Policy: WriteBack,ReadAdaptive, Direct, Write Cache OK if Bad BBU

Access Policy: Read/Write

Disk Cache Policy: Disk's Default

Encryption Type: None

Physical Disk Information:

Physical Disk: 0

Enclosure Device ID: 32

Slot Number: 0

Device Id: 0

Sequence Number: 2

Media Error Count: 0

Other Error Count: 0

Predictive Failure Count: 0

Last Predictive Failure Event Seq Number: 0

PD Type: SAS

Raw Size: 136.732 GB [0x11177328 Sectors]

Non Coerced Size: 136.232 GB [0x11077328Sectors]

Coerced Size: 136.125 GB [0x11040000 Sectors]

Firmware state: Online

SAS Address(0): 0x500000e117c10972

SAS Address(1): 0x0

Connected Port Number: 7(path0)

Inquiry Data: FUJITSU MBE2147RC       D905D304PB40B3WA       

FDE Capable: Not Capable

FDE Enable: Disable

Secured: Unsecured

Locked: Unlocked

Foreign State: None

Device Speed: Unknown

Link Speed: Unknown

Media Type: Hard Disk Device

 

 

RAID Level : Primary-1,Secondary-0, RAID Level Qualifier-0
Size:544.5GB
State : Optimal
Strip Size : 64KB
Number Of Drivesper span:2 //表示每2个物理盘做成一个RAID1盘组
Span Depth : 4//表示共4个RAID1

Secondary-0：次要的为raid 0 ，说明4个raid1又做了raid0

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