Intel SRCMR - RAID Controller User's Manual
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Brand: Intel
Category: Adapter
Type: Operation & user’s manual for Intel SRCMR - RAID Controller
Pages: 180
Download Intel SRCMR - RAID Controller Operation & user’s manual
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Getting Started 33
Table 10. Additional Operational States
State Description
OK State The disk array is fully operational when in the OK state. All redundant
information is present, that is, a hard disk can fail without impairing the
functionality of the disk array. This is the normal state of a disk array.
Methods for the Replacement of a Disk Drive
The Intel RAID Controller SRCMR and the Intel RAID Controller SRCMR firmware offer a
variety of methods to replace a defective disk drive. When to use them depends on the physical
environment of your server. With some servers the disk drives are mounted into the server
enclosure. They are not removable. With other servers there is an intelligent backplane (for
example, SAF-TE) and which hosts a number of disk drives with a Single Connector Attachment
(SCA). Another type of server uses the disk drive in a hot pluggable disk carrier. These carriers
are often “stupid” and do not communicate with the Intel RAID Controller SRCMR or server,
though, they can display the disk drive’s temperature or the status of its built-in fan.
Table 11. Disk Drive Replacement Options
Manual Hot Plug Auto Hot Plug
Automatic Replacement
with Hot Fix Drive
Typical
Server
Environment
Low Cost.
Disk drives are physically
mounted in the server
enclosure and are not
removable.
Additional cost for external
enclosure, cables,
backplanes, etc.
Disk Drives are removable in
an intelligent or
non-intelligent subsystem.
The subsystem complies
with one of the following
enclosure standards:
“SAF-TE” (SCSI Accessed
Fault Tolerant Enclosures)
“SES” (SCSI Enclosure
Services)
“Intelligent Fault Bus” (former
DEC™ fault bus)
Non-Intelligent subsystems
using hot pluggable disk
carriers.
Low cost.
High availability.
The Intel RAID Controller
SRCMR has a spare drive
available at all times. Should
one hard drive of an array
drive fail, the spare drive (hot
fix drive), is automatically
built into the array.
continued