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Compaq TaskSmart N2400 Administration Guide
Compaq Confidential – Need to Know Required
Writer:
Doug Warren
Project:
Compaq TaskSmart N2400 Administration Guide
Comments:
Part Number:
177675-002
File Name:
g-ch6.doc
Last Saved On:
2/12/01 1:56 PM
Using Spare Drives
To greatly increase the fault tolerance of your TaskSmart N2400 appliance,
Compaq recommends that you use at least one of the drives in the storage
enclosures as an online spare drive. Using the recommended configuration of
RAID 5 (distributed data guarding) on the external enclosure drives, in
combination with an online or hot spare, achieves the highest level of
protection. In case of a drive failure, an online spare is assigned to an array. If
the spare is available, it acts as an immediate replacement for the failed drive.
Recovery operations start automatically to rebuild the information from the
failed drive onto the spare drive, using the remaining drives and the distributed
data guarding (parity) information.
NOTE:
Until the rebuild process is complete, a spare drive cannot prevent the failure of
the entire array if another drive in the array fails. Additionally, it is possible that
noncorrectable drive errors can prevent a successful rebuild operation in some cases.
You can assign a single online spare drive to multiple arrays, or you can
choose to devote multiple drives to online spare duty for maximum
redundancy. When using a single online spare drive, be sure to assign it to
each array in the storage enclosure. The original online spare drive remains a
part of the array until the replacement drive is installed. Replacing an online
spare drive maintains a high level of fault tolerance.
Содержание N2400 - TaskSmart - 1 GB RAM
Страница 46: ...Administrative Procedures 2 17 3 Select a virtual disk Figure 2 8 Snapshot Manager screen creating snapshots ...
Страница 93: ...3 32 Compaq TaskSmart N2400 Administration Guide Figure 3 16 Modify User Properties Profile tab dialog box ...
Страница 127: ...3 66 Compaq TaskSmart N2400 Administration Guide Figure 3 39 Select User Computer or Group dialog box ...