Maxtor ELX8-60 manual #1. HDD

ELX8 -60 APPENDIX

#1. HDD

#1.1. Fundamental Notions & Terms

ELX8-60 Storing Constructure

(1)It is possible to connect 2 sets of HDD internally (Internal, ATA Interface) and 63 sets of HDD externally (External, 2 ports of IEEE1394).

(2)All of the connected HDDs is recognized as one virtual disk, and ELX8-60 supports upto 4TB.

(3)Hdds are divided into primary disk (connected firstly) and auxillary disk.

<Note>

ATA(or EIDE) supports two channel interfaces (Primary/Secondary). Each channel can be connected to two devices (Mas ter/Slave, HDD/CD-ROM). However ELX8 -60 supports 1 channel interface internally and total two HDDs. In order to prevent confusing VFS2’s Primary Disk, we will not use the terms (Primary/Secondary).

(4) Primary disk is composed of log partition, normal partition, and alarm partition, and auxillary disk is composed of only no rmal partition. So if primary disk has some problem, all of the recorded data will be lost.

	<Note>
Log Partition		To store the information of recorded data
Normal Partition		To store the data as normal recording schedule
Alarm Partition		To store the data as alarm recording condition (MD or Sensor)

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