![background image](http://html.mh-extra.com/html/nec/express5800-120rj-2/express5800-120rj-2_user-manual_251222114.webp)
4-24 Configuring Your Server
Virtual Disk
Virtual disk is a logical drive defined in disk group. It is recognized as a physical drive by OS. The
allowable number of virtual disks is up to 16 per disk group, or up to 64 per controller.
The figure below shows a sample configuration in which the Internal RAID Controller (equivalent
to N8103-116) is connected with three HDDs, creating one Disk Group. Two RAID5 virtual disks
(VD) are defined in the Disk Group.
HDD 1
(36 GB)
HDD 2
(36 GB)
HDD 3
(36 GB)
RAID Controller
DG0 108 GB
VD1-3
16 GB
VD1-2
16 GB
VD1-1
16 GB
VD0-1
20GB
VD0-2
20GB
VD0-3
20GB
VD0 (RAID5)
40 GB
VD1 (RAID5)
32 GB
Parity
The parity means redundant data. A single set of redundant data is created from the data saved in
more than one HDD.
The created redundant data is used for data recovery when a HDD is defected.
Hot-Swap
The hot-swap enables a HDD to be removed (or replaced) under system operation.
Hot-Spare
The hot-spare is prepared as an auxiliary HDD substituting for a defected HDD included in a logical
drive which is configured at a redundant RAID level. Detecting a HDD fault, the system
disconnects the HDD (or makes it offline) and starts rebuild using the hot-spare.
Summary of Contents for Express5800/120Rj-2
Page 16: ...x This page is intentionally left blank ...
Page 19: ...Notes on Using Your Server 1 3 Internal View ...
Page 34: ...1 18 Notes on Using Your Server This page is intentionally left blank ...
Page 90: ...3 24 Setting Up Your Server This page is intentionally left blank ...
Page 164: ...4 74 Configuring Your Server 3 Setting menu for VD 0 is displayed ...
Page 172: ...4 82 Configuring Your Server This page is intentionally left blank ...
Page 240: ...7 12 Maintenance This page is intentionally left blank ...
Page 354: ...9 78 Upgrading Your Server This page is intentionally left blank ...
Page 364: ...C 2 IRQ This page is intentionally left blank ...
Page 412: ...E 24 Installing Windows Server 2003 This page is intentionally left blank ...
Page 414: ...F 2 Using a Client Computer Which Has a CD Drive This page is intentionally left blank ...
Page 418: ...G 4 Product Configuration Record Table This page is intentionally left blank ...