Name: Lenovo ThinkServer RD330
Brand: Lenovo
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Page 37

MegaRAID SAS Software User Guide Chapter 2: Introduction to RAID

| RAID Levels

Figure 11: RAID 00 Drive Group Example with Two Drives

2.5.8 RAID 10 RAID 10 is a combination of RAID 0 and RAID 1, and consists of stripes across mirrored

drives. RAID 10 breaks up data into smaller blocks and then mirrors the blocks of data

to each RAID 1 drive group. The first RAID 1 drive in each drive group then duplicates its

data to the second drive. The size of each block is determined by the stripe size

parameter, which is set during the creation of the RAID set. The RAID 1 virtual drives

must have the same stripe size.

Spanning is used because one virtual drive is defined across more than one drive

group. Virtual drives defined across multiple RAID 1 level drive groups are referred to as

RAID level 10, (1+0). Data is striped across drive groups to increase performance by

enabling access to multiple drive groups simultaneously.

Each spanned RAID 10 virtual drive can tolerate multiple drive failures, as long as each

failure is in a separate drive group. If there are drive failures, less than total drive

capacity is available.

Configure RAID 10 by spanning two contiguous RAID 1 virtual drives, up to the

maximum number of supported devices for the controller. RAID 10 supports a

maximum of eight spans, with a maximum of 32 drives per span. You must use an even

number of drives in each RAID 10 virtual drive in the span.

NOTE: Other factors, such as the type of controller, can restrict the number of drives

supported by RAID 10 virtual drives.

Table12 provides an overview of RAID 10.

Segment 1

Segment

...

RAID

RAID 0

Segment

Table 12: RAID 10 Overview

Uses Appropriate when used with data storage that needs 100 percent

redundancy of mirrored drive groups and that also needs the enhanced I/O

performance of RAID 0 (striped drive groups.) RAID 10 works well for

medium-sized databases or any environment that requires a higher degree

of fault tolerance and moderate to medium capacity.

Strong Points Provides both high data transfer rates and complete data redundancy.

Weak Points Requires twice as many drives as all other RAID levels except RAID 1.

Drives 4 - The maximum number of drives supported by the controller (using an

even number of drives in each RAID 10 virtual drive in the span)

Lenovo ThinkServer RD330 Specifications

General

Bus type	QPI
Stepping	M1
FSB Parity	No
Scalability	2S
Processor code	SR0LR
Processor cache	10 MB
Processor cores	4
Processor model	E5-2407
System bus rate	6.4 GT/s
Processor series	Intel Xeon E5-2400
Processor socket	LGA 1356 (Socket B2)
Processor codename	Sandy Bridge EN
Motherboard chipset	Intel® C606
Processor frequency	2.2 GHz
Processor cache type	Smart Cache
Processor lithography	32 nm
Processor manufacturer	Intel
Processor package size	45 x 42.5 mm
Processor front side bus	- MHz
Processor operating modes	64-bit
ECC supported by processor	Yes
Supported instruction sets	AVX
Thermal Design Power (TDP)	80 W
Number of processors installed	1
Maximum number of SMP processors	2
Maximum number of PCI Express lanes	24
Memory types supported by processor	DDR3-SDRAM
Memory channels supported by processor	Triple
Memory clock speeds supported by processor	800, 1066 MHz
Memory bandwidth supported by processor (max)	25 GB/s
Maximum internal memory supported by processor	375 GB
HDD size	3.5 \
HDD interface	Serial ATA, Serial Attached SCSI (SAS)
Optical drive type	DVD-RW
Total storage capacity	0 GB
Maximum storage capacity	12 TB
Number of HDDs installed	0
Memory slots	12
Internal memory	4 GB
Memory clock speed	1333 MHz
Maximum internal memory	192 GB
Cabling technology	10/100/1000Base-T(X)
Ethernet interface type	Gigabit Ethernet
PS/2 ports quantity	-
USB 2.0 ports quantity	6
Ethernet LAN (RJ-45) ports	3
Compatible operating systems	Windows Server 2012\\r Windows Server 2008\\r Windows Server 2008 R2\\r Windows Small Business Server 2011\\r Novel SUSE Linux Enterprise Server\\r VMware vSphere and VMware ESXi
Chassis type	Rack (1U)
Power supply	550 W
Sustainability certificates	ENERGY STAR
PCI Express slots version	3.0
Processor ARK ID	64614
Intel Identity Protection Technology version	0.00