Hp Dynamic Smart Array Controllers Manuel d'utilisateur télécharger pdf (Page 20)

Replacing, moving, or adding hard drives 20

CAUTION: Sometimes, a drive that has previously been failed by the controller may seem to be

operational after the system is power-cycled or (for a hot-pluggable drive) after the drive has been

removed and reinserted. However, continued use of such marginal drives may eventually result in

data loss. Replace the marginal drive as soon as possible.

The following items indicate a hard drive failure:

• The following POST messages appear when the system is restarted, as long as the controller detects at

least one functional drive:

o 1784: Drive Array Failure

o 1786: Drive Array Recovery Needed

• ACU represents failed drives with a distinctive icon.

• HP SIM can detect failed drives remotely across a network. For more information about HP SIM, see the

documentation on the HP website (http://www.hp.com/go/support).

• The HP SMH indicates that a drive has failed.

• iLO/AMS indicates that a drive has failed.

• In Windows operating systems, the Event Notification Service posts an event to the Microsoft Windows

system event log and the IML.

• In Linux operating systems, systems events are logged to /var/log/messages.

• ACU lists all failed drives (on systems supported by ACU v8.28.13.0 or later).

For more information about diagnosing hard drive problems, see HP ProLiant Gen8 Troubleshooting Guide,

Volume I: Troubleshooting on the HP website (http://www.hp.com/go/bizsupport).

Effects of a hard drive failure

When a hard drive fails, all logical drives that are in the same array are affected. Each logical drive in an

array might be using a different fault-tolerance method. Therefore, each logical drive can be affected

differently.

• RAID 0 configurations cannot tolerate drive failure. If any physical drive in the array fails, all RAID 0

logical drives in the same array also fail.

• RAID 1 configurations can tolerate one drive failure. If one physical drive in a RAID 1 configuration

fails, the RAID volume is still intact as a degraded RAID 1.

• RAID 1+0 configurations can tolerate up to two drive failures as long as no failed drives are mirrored

to one another.

A RAID 1+0 configuration of four drives consists of two RAID 1 volumes of two drives each. One drive

from each RAID 1 volume can fail for a total of two failed drives. If both drives in one RAID 1 volume fail,

the entire RAID 1+0 volume fails.

• RAID 5 configurations can tolerate up to one drive failure. Data protection is provided by parity data.

This parity data is calculated stripe by stripe from the user data that is written to all other blocks within

that stripe. The blocks of parity data are distributed evenly over every physical drive within the logical

drive.

IMPORTANT: RAID 5 is available only when the optional 512 MB FBWC module is installed. For

more information, see "Upgrading to 512 MB FBWC (on page 7)."

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 36 37

Commentaires sur ces manuels

Pas de commentaire

Desa CGN10R Manuel de l'utilisateur (20 pages)

marque: Desa | Catégorie: Radiators | Taille: 0.31 MB |

Table des matières

POSITION

GAS RESIDENTIAL HEATERS

OWNER’S MANUAL

WARRANTY INFORMATION

Plus de produits et de manuels pour Radiateurs Desa

Modèles	Type de document
105838-02	Manuel de l'utilisateur Desa 105838-02 User Manual, 4 pages
CGN30TLB	Manuel de l'utilisateur Desa CGN30TLB User Manual, 22 pages
DNV25PB	Manuel de l'utilisateur Desa DNV25PB User Manual [en] , 30 pages
VP5D	Manuel de l'utilisateur Desa VP5D User Manual, 34 pages
BC165DT	Manuel de l'utilisateur Desa BC165DT Manuel d'utilisation, 56 pages
CGB3930NR	Manuel de l'utilisateur Desa CGB3930NR User Manual, 28 pages
CBP20TK	Manuel de l'utilisateur Desa CBP20TK User Manual, 30 pages
B600D	Manuel de l'utilisateur Desa B600D User Manual, 20 pages
CGD3930N	Manuel de l'utilisateur Desa CGD3930N User Manual, 40 pages
CCL3924PRA	Manuel de l'utilisateur Desa CCL3924PRA User Manual, 36 pages
CGN10A	Manuel de l'utilisateur Desa CGN10A User Manual, 20 pages
VyS18NC	Manuel de l'utilisateur Desa VyS18NC User Manual [en] , 32 pages
CLD3018PA	Manuel de l'utilisateur Desa CLD3018PA User Manual, 36 pages
VP5B	Manuel de l'utilisateur Desa VP5B User Manual, 28 pages
VSF30PT	Manuel de l'utilisateur Desa VSF30PT User Manual, 48 pages
CLD3924NT	Manuel de l'utilisateur Desa CLD3924NT User Manual, 34 pages
VP600BA EN	Manuel de l'utilisateur Desa VP600BA EN User Manual, 34 pages
VS18NR	Manuel de l'utilisateur Desa VS18NR User Manual, 26 pages
CGP6L	Manuel de l'utilisateur Desa CGP6L User Manual, 20 pages
CCL3018PTA/NTA EN	Manuel de l'utilisateur Desa CCL3018PTA/NTA EN User Manual, 40 pages

Hp Dynamic Smart Array Controllers Manuel d'utilisateur Page 20

Commentaires sur ces manuels

Desa CGN10R manuels

Desa CGN10R Manuel de l'utilisateur (20 pages)

Table des matières

Plus de produits et de manuels pour Radiateurs Desa

Hp Dynamic Smart Array Controllers Manuel d'utilisateur Page 20

Commentaires sur ces manuels

Produits connexes et manuels pour Accessoires pour ordinateurs Hp Dynamic Smart Array Controllers

Desa CGN10R manuels

Desa CGN10R Manuel de l'utilisateur (20 pages)

Table des matières

Plus de produits et de manuels pour Radiateurs Desa