Configuring Your Server 4-41
RAID0
In RAID0, data to be recorded is distributed to hard disk drives. The mode is called "striping".
In the figure below, data is recorded in stripe 1 (disk 1), stripe 2 (disk 2), and stripe 3 (disk 3)… in
the order. Because RAID0 allows all hard disk drives to be accessed collectively, it can provide the
best disk access performance.
IMPORTANT:
RAID0 cannot have data redundancy. If a hard disk
drive is defected, the data saved in the hard disk drive cannot be
recovered.
RAID Controller
HDD 1
HDD 2
Stripe 1
HDD 3
Stripe 4
Stripe 2
Stripe 5
Stripe 3
Stripe 6
RAID1
In the RAID1 level, data saved in a hard disk drive is written to another hard disk drive without
change. The mode is called "mirroring".
When data is written onto a single hard disk drive, the same data is written onto another hard disk
drive. If either of the hard disk drives is defected, the other hard disk drive containing the same data
can substitute for the defected hard disk drive. Thus the system can continue to operate without
interruption.
RAID Controller
HDD 1
HDD 2
Stripe 1
Stripe 2
Stripe 1
Stripe 2
Summary of Contents for Express5800/R120b-1
Page 20: ...Notes on Using Your Server 1 3 3 5 inch disk model...
Page 87: ...3 24 Setting Up Your Server This page is intentionally left blank...
Page 268: ...6 14 Installing and Using Utilities Windows Server 2003...
Page 296: ...7 14 Maintenance This page is intentionally left blank...
Page 350: ...8 54 Troubleshooting When you use a remote console 6 Each tool is selected and it starts...
Page 438: ...9 82 Upgrading Your Server This page is intentionally left blank...
Page 450: ...C 2 IRQ This page is intentionally left blank...
Page 474: ...D 24 Installing Windows Server 2008 R2 4 Activate Windows The Windows activation is complete...
Page 504: ...E 28 Installing Windows Server 2008 4 Activate Windows The Windows activation is complete...
Page 564: ......
Page 566: ...H 2 Using a Client Computer Which Has a CD Drive This page is intentionally left blank...
Page 576: ...I 10 Accessing Power and Performance Data This page is intentionally left blank...
Page 580: ...J 4 Product Configuration Record Table This page is intentionally left blank...