Cisco UCS E Series Panduan Instalasi - Halaman 32
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Installing or Replacing Hard Disk Drives on the E-Series Servers
Inserting the E-Series Server in a Cisco ISR 4451-X
A Cisco ISR 4451-X that is up and running can detect when an E-Series Server is inserted in the SM slot.
After the router detects the E-Series Server, the router software enables power to the server.
Installing or Replacing Hard Disk Drives on the E-Series Servers
The double-wide E-Series Servers can be ordered with two or three hard disk drives (HDD) or solid-state
drives (SSD) preinstalled. The double-wide E-Series Servers support the following Redundant Array of
Independent Disks (RAID) configuration:
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•
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The double-wide E-Series Servers support adding a hot spare drive under RAID 1. If one of the disk
drives under RAID 1 fails and there is a hot spare drive installed, the system automatically rebuilds the
disk image onto the hot spare drive. The hot spare drive replaces the failed drive as the mirrored drive
under RAID 1. To maintain fault tolerance, you must install another hard disk drive.
The single-wide E-Series Servers come with two HDDs or SSDs preinstalled. The single-wide E-Series
Servers support RAID 0 and RAID 1.
Only trained and qualified personnel should be allowed to install or replace this equipment. Statement
Warning
1030
Ultimate disposal of this product should be handled according to all national laws and regulations.
Warning
Statement 1040
Warning
No user-serviceable parts inside. Do not open. Statement 1073
Warning
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit. Statement 1028
Blank faceplates and cover panels serve three important functions: they prevent exposure to
Warning
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement
1029
Hardware Installation Guide for Cisco UCS E-Series Servers
32
RAID 0 (data striping)—Data is stored evenly in stripe blocks across all disks in the array, providing
fast throughput. There is no data redundancy, and all data is lost if any disk fails.
RAID 1 (disk mirroring)—Data is written to two disks, where the data in both disk drives is
identical. This provides complete data redundancy if one disk fails.
RAID 5 (disk striping with distributed parity)—Data and parity information is striped and
distributed across all disks in the array with distributed parity information. RAID 5 requires three
hard disks and provides limited fault tolerance.
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