Dot Hill Systems SANnet II 200 Specifikace

1 SANnet II 200 SCSI Array Technical Product Description Guide January 2003 83-00002947 Revision A

mode. The 146GB disk is available in speeds of 10,000RPM only at this time, but the other capacities are available in 10,000RPM or 15,000RPM speeds.

The cooling fans within each FRU operate as matched pairs with tachometer-controlled spindles and position-synchronized blades for maximum efficiency.

To remove an EMU, loosen the small thumbscrews at each end and then remove the EMU by pulling it out from the enclosure. To install one, slide the EM

Termination Module The SANnet II 200 SCSI array terminator board is a field-serviceable FRU that supplies the SCSI termination throughout a base encl

Features Controller Optimization SANnet II 200 SCSI array controller operations are highly automated to minimize management workloads and are self

The surviing controller of a fail-over process always becomes the primary controller. Replacing the faulty controller will result in an automatic fail

amount of read cache memory is filled or sequential requests are no longer detected. If available read cache memory fills and sequential read requests

Spare Disks A SANnet II 200 SCSI array disk can be assigned as a data disk or a spare disk. When configured as a spare, it can serve as a local spare

Management Configuration Dot Hill’s SANscape software is a Java technology-based software program that combines storage configuration, maintenance

Monitoring The main SANscape window provides status at a glance for all networked array devices. It indicates the status of the devices and logical d

Copyright Copyright 2001-2003 – Dot Hill Systems Corp. All rights reserved. No part of this publication may be reproduced, stored in a retrieval syst

When the console receives any event, it logs it into SANscape’s Event Log file, EVENTLOG.TXT, and displays it in the Event Log window. Also, if the ev

In-Band & Out-of-Band Management SANscape’s out-of-band storage management capability enables you to monitor and manage Dot Hill arrays over the

Event Reporting You can use Dot Hill’s SANscape to run as a background service to report events to specified email addresses. Using SANscape, you can

Firmware Updates Fast and easy download of new versions of controller and disk firmware is possible using the SANnet II 200 SCSI array management sui

Detailed Specifications RAID RAID levels 0, 1, 0+1, 3, 5, 1+0, 3+0 and 5+0. Enhanced RAID Levels supported with logical volume implementation. Ma

Supported memory type SDRAM memory for enhanced performance. Fast page memory with parity for enhanced data security. ECC-protected. Read-ahead opera

Head: 64,127,255 or variable Cylinder: <1024, <32784,<65536 or variable Drive motor spin-up Supported The controller will send spin-up (star

No single-point-of-failure Supported Automatic engagement of replacement controller Supported Dynamic cache memory allocation Supported Cache memo

Drive S.M.A.R.T. support Supported Clone failing drive Supported Users may choose to clone data from a failing drive to a backup drive manually U

Performance Parameters Parameter Range RAID level JBOD, N-RAID, RAID 0, RAID 1, RAID 1+0, RAID 3, RAID 3+0, RAID 5, RAID 5+0 Rebuild priority Lo

Contents TABLE OF CONTENTS ...

Glossary active termination, regulated Terminates the SCSI bus with a series of resistors tied to +5 volts. The terminator is labeled Regulated but

fast write Allows disk write commands to be safely acknowledged to the host before the data is actually written to the disk media. This can be enabl

hot spare or hot sparing A drive in a RAID 1 or RAID 5 configuration that is held in reserve to replace any other drive that fails. After a reconstru

commission to complete a repair process. N port A Fibre Channel port in a point-to-point or Fabric connection. NVRAM Non-Volatile Random Access Memo

34devices and servers providing accelerated data access. SCA Single connector attachment. A SCSI disk connector technology coinvented by Sun Micros

35independent disk spindles. The amount of data written on each disk before moving to the next drive is the stripe width. terminator A part used to

Introduction The SANnet II 200 SCSI array is a robust Ultra160 SCSI storage system and worthy successor to the well-established SANnet 3300 series a

· Unified graphical user interface (GUI) provides intuitive configuration, management and reporting for every Dot Hill SANnet II series array in your

FIGURE 3: Typical Sequence of Installation Steps Reliability, Availability and Serviceability Comprehensive reliability, availability and servicea

Performance SANnet II 200 SCSI arrays provide very high levels of performance within a compact package. The use of Ultra160 SCSI technology throughou

Architecture SANnet II 200 SCSI arrays use modular design principles. Essentially, each array is a collection of independent modules that operate co

With redundant controllers, the system can use the controllers in active/passive or active/active (recommended) mode. When a controller is configured