Advantech RAID-800S Installation Reference Manual Download Page 10

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Appendix A RAID Levels ............................................... 159

A.1

RAID 0 (Striping) .............................................................. 160

A.2

RAID 1 (Mirroring) .......................................................... 160

A.3

RAID 0+1 (Striping and Mirroring) ............................... 160

A.4

RAID 3 (Striping with One Parity Hard Drive) ............ 160

A.5

RAID 5 (Striping with Parity) .......................................... 161

Appendix B Technical Specifications .......................... 163

B.1

Array Controller ................................................................ 164

B.2

Configuration ..................................................................... 164

Appendix C RAID Controller's Error Messages .......... 165

C.1

RAID Controller’s Error Messages .............................. 166

C.2

RAID Controller's Warning Messages ......................... 166

C.3

RAID Controller's Messages ......................................... 166

Appendix D Mapping the LUN of the Host Channel to

the Slices of an Array ................................ 167

Mapping Principle ....................................................................... 168

Appendix E Frequently Asked Questions ................... 171

Frequently Asked Questions .................................................... 172

Summary of Contents for RAID-800S

Page 1: ...RAID 800S SCSI to SCSI Disk Array Subsystem Installation Reference Guide ...

Page 2: ...ed in any form or by any means without the prior written permission of Advantech Co Ltd Information provided in this manual is intended to be accurate and reliable However Advantech Co Ltd assumes no responsibility for its use nor for any infringements upon the rights of third parties which may result from its use All brand and product names mentioned herein are trademarks or regis tered trademark...

Page 3: ...esentative immediately We have carefully inspected the RAID 800S mechanically and electrically before shipment It should be free of marks and scratches and in perfect working order upon receipt As you unpack the RAID 800S check it for signs of shipping damage For example damaged box scratches dents etc If it is damaged or it fails to meet the specifications notify our service department or your lo...

Page 4: ... representative or Advantech s cus tomer service center for technical support if you need additional as sistance Please have the following information ready before you call Product name and serial number Description of your peripheral attachments Description of your software operating system version applica tion software etc A complete description of the problem The exact wording of any error mess...

Page 5: ... for a long time disconnect it from the power source to avoid damage by transient over voltage 12 Never pour any liquid into an opening This could cause fire or electrical shock 13 Never open the equipment For safety reasons the equipment should be opened only by qualified service personnel 14 If any of the following situations arises get the equipment checked by service personnel a The power cord...

Page 6: ...ngeren Zeitraum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer Überspannung eine Be schädigung vermieden 12 Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen Dies könnte einen Brand bzw elektrischen Schlag auslösen 13 Öffnen Sie niemals das Gerät Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem...

Page 7: ... 6 Modem Port 10 Chapter 2 Functions 11 2 1 Features of the Controller Unit 12 2 2 Functions of the Controller Unit 12 2 2 1 RAID SCSI Disk Array Management 12 2 2 2 Highly Flexible User Interface 12 2 2 3 RAID Function Automation 12 2 2 4 SCSI Performance Enhancement 13 2 2 5 Systems Performance Monitoring 13 2 3 Components of the Controller Unit 13 2 3 1 486DX Processor 14 2 3 2 Memory Subsystem...

Page 8: ...lling Hard Disk Drives 20 3 2 1 Device Channels 20 3 2 2 How the Device Channels are Connected 21 3 2 3 Installation 22 3 2 4 LEDs on the Mobile Rack 24 3 3 Connecting External SCSI Devices 25 3 3 1 Host Channels 25 3 3 2 How the Host Channels are Connected 25 3 3 3 Connecting an External SCSI Device 25 3 4 Replacing a Power Supply 26 3 5 Replacing a Fan 27 3 6 Memory Upgrades 27 3 7 Replacing the...

Page 9: ...95 6 8 RAID Array Consistency Check 100 6 9 Viewing the RAID Controller s Configuration 103 6 10 Configuring an Ultra Wide SCSI Subsystem 109 6 11 Main Menu 116 6 11 1 Edit Chasis 120 6 11 2 Quick Setup 122 6 11 3 Edit Array 123 6 11 4 Edit Chan 124 6 11 5 View Config 125 6 11 6 RS232 Params 126 6 11 7 User Params 127 6 11 8 Save Config 128 6 11 9 Restart 129 6 11 10 Utility 130 Chapter 7 Configur...

Page 10: ...echnical Specifications 163 B 1 Array Controller 164 B 2 Configuration 164 Appendix C RAID Controller s Error Messages 165 C 1 RAID Controller s Error Messages 166 C 2 RAID Controller s Warning Messages 166 C 3 RAID Controller s Messages 166 Appendix D Mapping the LUN of the Host Channel to the Slices of an Array 167 Mapping Principle 168 Appendix E Frequently Asked Questions 171 Frequently Asked ...

Page 11: ...x ...

Page 12: ...C H A P T E R 1 General Information Introduction Key Features Unpacking Your Subsystem The Front Panel The Rear Panel ...

Page 13: ...s as a result from the redundant manner in which data is stored in a RAID disk array If a disk in the RAID array fails your subsystem continues to function without any risk of data loss This is because redundant information are stored separate from the data These redundant information will then be used to reconstruct any data that was stored on a failed disk In other words your subsystem can toler...

Page 14: ...Additional channels as option Multi host attachment Up to 4 logical drives with different RAID levels Up to 8 LUNs per host channel each with different RAID levels Disk drive failure rebuilding Hot standby disk drive and automatic rebuild Hot swap and automatic on line rebuild right after replacing the failed hard drive Bad sector reassignment Concurrent I O tagged command queuing Two RS 232 seria...

Page 15: ... found do not remove the components contact the dealer where you purchased your subsystem for further instructions Your package contains the following items RAID 800S subsystem unit One power cord Two 120 cm external SCSI cables One 9P female to 9P female RS 232 cable Installation reference guide Spare screws etc Nine keys seven for mobile racks two for power supplies If any of these items are mis...

Page 16: ... Slots 1 to 3 and Slots 5 to 8 Slot 4 is default not in stalled because there is no more space for another hard drive Figure 1 1 Front Panel 1 4 1 RAID Disk Array Controller The RAID Disk Array Controller is the major component of the entire RAID 800S subsystem This is where you will configure the RAID disk array and RAID level of your subsystem Figure 1 2 Front View of the Controller LCD screen R...

Page 17: ...ion on the LCD display screen This is also used to move between each menu when you configure your subsystem This is used to enter the option you have selected Press this button to return to the previous menu Red blinking LED indicates data is being accessed Green LED indicates power is on This is used to restart the Disk Array Controller Parts LCD screen Up and Down arrow buttons SEL button ESC bu...

Page 18: ... hard drive is not being accessed the LED will not illuminate Holds the fan located at the front of the mobile rack Parts Keylock Power LED Access LED Fan holder 1 4 2 Mobile Racks The subsystem is equipped with 7 aluminum frame mobiles racks used for housing hard drives The aluminum frame provides better heat dissipation It is equipped with a fan located at the front of the mobile rack The fan pr...

Page 19: ... 68 pin SCSI flat cable SCSI ID selector cable Drive activity cable Note Refer to section 3 2 3 for more information Figure 1 5 Opening the Mobile Rack Figure 1 6 Internal Structure of the Mobile Rack Figure 1 7 Installing the Hard Disk Drive ...

Page 20: ...em If two power supplies are in use and one failed to function an alarm will sound warning you of power failure Press the Reset button located at the rear panel to stop the alarm The LED of the power supply that needs to be replaced will turn red The color will return to normal green only after you have replaced the defective power supply Refer to section 3 4 for instructions on replac ing a power...

Page 21: ... channel B allowing you to connect external SCSI devices Each channel is connected to a 68 pin connector Refer to section 3 3 for more information 1 5 4 Drive Channel Termination Refer to section 3 2 for descriptions on how drive channels are terminat ed 1 5 5 Monitor Port Your subsystem is equipped with a serial monitor port allowing you to connect a PC or terminal Refer to section 3 8 for more i...

Page 22: ...C H A P T E R 2 Functions This chapter describes the general functions of RAID 800S ...

Page 23: ...lect your own storage capacity data availability redundancy and I O transfer performance for any data application Supports almost any type of servers or operating system Drives can be grouped or managed individually as a single or multiple drive groups Supports any SCSI hard drive platform 2 2 2 Highly Flexible User Interface Front panel key controls and LCD screen can be used for all disk array c...

Page 24: ...st allows up to 64 simultaneous data requests to be processed Cache write policy and variable stripe width may be defined by the user Enhanced SCSI bus performance 2 2 5 Systems Performance Monitoring Built in controller and drive fault monitoring diagnostics Critical condition notification via status messages and alarms Backup power supply option in case of power interruption 2 3 Components of th...

Page 25: ... subsystem supports cache memory expansion we do not recommend users to perform this on their own This is because the subsystem requires further testing after each memory expansion to ensure reliability 2 4 Controller Firmware The subsystem s firmware contains various programs executed by the 486DX microprocessor This firmware which resides in the onboard flash EPROM stores information even after ...

Page 26: ... the SCSI drives connected to it as a physical drive group and logical unit LUN 2 8 1 Physical Drive Groups The subsystem has up to a maximum of seven individual disk drives which can be used to form a physical drive group This drive group will comprise the array s logical unit capacity Take note if the capacity of the three hard drives in a drive group are not identical the capacity of the drive ...

Page 27: ...ce or redundancy disk performance The subsystem supports RAID levels 0 1 0 1 3 and 5 RAID imple mentation and the disk drives physical configuration is transparent to the host operating system This means that the host operating system drivers and software utilities are not in any way affected by any RAID level To properly configure the subsystem a proper understanding of the RAID technology is an ...

Page 28: ...t s read cache is always enabled Its operation is transparent and requires no user intervention 2 10 5 Write Back Cache Write back cache is a caching strategy wherein write operations result in a completion status being sent to the host operating system as soon as the cache not the disk drive receive the data to be written The target SCSI drive will receive the data in a more appropriate time in o...

Page 29: ...18 RAID 800S User s Manual ...

Page 30: ...C H A P T E R 3 Installation Overview This chapter describes the hardware component installation and interface of RAID 800S ...

Page 31: ...n the RAID Disk Array Controller Each device channel is connected to 3 or 4 hard drives therefore the two device channels are connected to a total of 7 hard drives 3 1 Powering on your Subsystem 1 Plug the power cord from the rear of the subsystem into a power outlet 2 Turn on the power switch 3 The power supplies installed in your subsystem is able to operate using 115V or 230V Configure the Volt...

Page 32: ... ends of the cable are connected to 3 or 4 U shaped frames of the mobile racks A U shaped frame holds a mobile rack that houses a hard drive Device channel 1 connects to 3 U shaped frames and device channel 2 con nects to 4 U shaped frames The last connector of the cable is connect ed to the active terminator located at the rear of the subsystem to terminate the device channel Refer to the figure ...

Page 33: ...ic electrical discharge can damage your drive or other compo nents without causing any signs of physical damage To provide ESD protection ground yourself by touching the metal part of the subsystem chassis 3 Unpack your hard drive Before installing the drive into the rack you must first disable the drive s terminator Refer to your hard drive s manual for instructions on disabling the terminator 4 ...

Page 34: ...in the cartridge 12 Replace the cover The cables must be properly placed inside the cartridge away from the edge of the cartridge This is to prevent the cables from being pressed when you replace the cover Make sure the cover snaps into place otherwise you will not be able to insert the rack into the slot 13 Slide the cartridge into a slot until it clicks into place The mobile rack s power LED low...

Page 35: ...nges according to its operating status 15 The Power LED will turn green after it has been detected by the subsystem If the LED did not turn green check the following a Make sure the cables at the rear of the hard drive are connected properly b Make sure the hard drive is in good condition 16 If the hard drive is not being accessed the Access LED will not illuminate The LED blinks only when being a...

Page 36: ...AID Disk Array Controller Refer to section 1 4 1 figure 1 3 for the locations of the host channels 3 3 2 How the Host Channels are Connected Your subsystem uses 2 internal SCSI cables one for each host channel One end of the internal SCSI cable is connected to a host channel and the other end mounted at the rear of the subsystem With 2 internal SCSI cables connected a total of 2 Centronic connecto...

Page 37: ...The Power Status LED will now illuminate Note When one or more SCSI devices are connected the total length of all cables internal or external must not exceed 3 meters 9 8 ft to ensure reliable operation 3 4 Replacing a Power Supply 1 If one of the power supplies becomes defective an alarm will sound and the Power Status LED of the power supply that needs to be replaced will stop illuminating 2 Pre...

Page 38: ... in step 2 5 Replace the top cover and screws you removed in step 1 3 6 Memory Upgrades Your subsystem is equipped with two SIMM Single In Line Memory Module sockets located in the RAID Disk Array Controller By default it comes with 8MB of memory It is upgradeable to 128MB by installing 4MB 8MB 16MB 32MB or 64MB 72 pin SIMMs modules Important Supports FPM Fast Page Mode and EDO Extended Data Outpu...

Page 39: ...the bracket of the mobile rack 2 Press the sides of the fan holder towards the center and pull it towards you 3 Disconnect the power cable 4 Remove the defective fan from the fan holder and replace it with a new one 5 Reconnect the power cable 6 Insert the fan holder back to its original position Figure 3 5 Replacing the Fan ...

Page 40: ...Chapter 3 Installation Overview 29 Fan Figure 3 6 Location of the Fan on the Fan Holder ...

Page 41: ...iption Data Carrier Detect DCD Receive Data RD Transmit Data TD Data Terminal Ready DTR Signal Ground SG Data Set Ready DSR Ready To Send RTS Clear To Send CTS Ring Indicator RI Pin 1 2 3 4 5 6 7 8 9 Note Refer to Chapter 6 for instructions on accessing the setup utility through a PC or terminal as well as instructions on setting the baud rate stop bit data bit and parity of your monitor or termin...

Page 42: ... for instructions on setting up your pager or fax as well as instructions on setting the baud rate stop bit data bit and parity of your modem Description Data Carrier Detect DCD Receive Data RD Transmit Data TD Data Terminal Ready DTR Signal Ground SG Data Set Ready DSR Ready To Send RTS Clear To Send CTS Ring Indicator RI Pin 1 2 3 4 5 6 7 8 9 Figure 3 8 Location of the Modem Port ...

Page 43: ...32 RAID 800S User s Manual ...

Page 44: ...C H A P T E R 4 SCSI Configuration Guidelines SCSI IDs Terminators ...

Page 45: ... to determine the ID and how to change it Note SCSI IDs has nothing to do with the order in which devices are cabled to the host adapter 4 2 Terminators Based on SCSI specification SCSI bus must be terminated at both ends Meaning the devices that are connected to the ends of the SCSI bus must have their bus terminators enabled Devices connected in the middle of the SCSI bus must have their termina...

Page 46: ...C H A P T E R 5 Quick Setup Guide This guide will allow you to setup RAID 800S in 5 minutes ...

Page 47: ...refers to slot and 1 refers to the location of the slot where the drive is installed Your subsystem comes with 8 slots but S4 is default configured as Not Installed Please refer to page 5 1 0 1 denotes the device channel where the drive is connected Refer to section 3 2 for more information 0 refers to the SCSI ID of the drive The SCSI ID of each slot has already been preset DO NOT change the SCSI...

Page 48: ...ppear as shown below Edit Chasis is the first field in the Main Menu 4 Press the Sel button to enter Quick Setup 3 Press the Down arrow button once to go to the Quick Setup menu Main Menu 2 Quick Setup 2 Quick Setup 21 Level5 Use the Up or Down arrow button to select a RAID Level Level 0 Level 1 Level 0 1 Level 3 or Level 5 and press Sel We recom mend that you select Level 5 which is faster and sa...

Page 49: ...e RAID READY will be mapped to the host channel Select View Config under the Main Menu to check whether the host channels are detected by the Host system This is to ensure that the SCSI card in the Host subsystem is able to access the hard drives Press ESC to return to the Main Menu Use the Up or Down arrow button to select the number of drives If you selected Level 5 in step 4 select 3 Level 5 re...

Page 50: ...ere your Host subsystem is connected and press SEL Refer to section 3 3 for more information If you selected Host channel 1 your screen will appear as shown below 41 Host Chan 1 411 SCSI ID 13 Press SEL to enter the SCSI ID The screen will appear as shown below 411 SCSI ID ID 0 Use the arrow buttons to assign a SCSI ID 0 15 and press SEL Make sure you select an ID that has not been used by the SCS...

Page 51: ...ed at the rear of the subsystem Refer to section 3 3 3 for more information 15 Press ESC twice to return to the Main Menu 16 Use the arrow buttons to move to the Save Config menu Main Menu 8 Save Config 17 Press SEL to enter Save Config 8 Save Config NO Use the arrow buttons to select Yes and press SEL to save the configurations 14 If your subsystem will be the last SCSI device use the arrow butto...

Page 52: ...C H A P T E R 6 Configuring the Subsystem This chapter describes in detail the various configuration procedures using both the LCD and terminal ...

Page 53: ...d at a time 6 1 1 Configuring through the Disk Array Controller If you are configuring your subsystem using the Disk Array Controller please refer to Chapter 1 for descriptions of the LCD screen and the functional buttons Refer to Chapter 5 for the quick setup guide to configuring your subsystem using the controller 6 1 2 Configuring through a Terminal Configuring through a terminal will allow you...

Page 54: ...nu and the right column Output Menu on the left column of the screen consists of 10 menus that would allow you to configure your subsystem Output on the right column shows the status and basic information about the subsystem 4 Reset the Disk Array Controller Refer to section 1 4 1 for the location of the reset button Figure 6 1 Configuring through a terminal ...

Page 55: ...44 RAID 800S User s Manual 6 2 Creating a New RAID 1 In the Main Menu select Edit Array and press Enter 3 Edit Array 31 Array1 Figure 6 2 Selecting Edit Array in the Main Menu ...

Page 56: ...Chapter 6 Configuring the Subsystem 45 31 Array1 311 Level 5 2 In the Edit Array menu select Array1 and press Enter Figure 6 3 Selecting Array1 in the Edit Array menu ...

Page 57: ...46 RAID 800S User s Manual 3 In the Array1 menu select Level 5 and press Enter 311 Level 5 3111 S1 2049MB Figure 6 4 Selecting Level 5 in the Array 1 menu ...

Page 58: ... the Subsystem 47 3111 S1 2049MB NO 4 In the Level 5 menu select the slot of the hard drive to be included in Array1 The slot that was selected in the example below is Slot 1 Figure 6 5 Selecting a Slot in the Level 5 menu ...

Page 59: ...48 RAID 800S User s Manual 5 In the S1 menu select Yes 3111 S1 2049MB YES Figure 6 6 Selecting Yes in the S1 menu ...

Page 60: ...2 2049MB YES 6 You will return to the Level 5 menu In the Level 5 menu select the slot of another hard drive to be included in Array1 and select Yes The slot that was selected in the example below is Slot 2 Figure 6 7 Selecting Yes in the S2 menu ...

Page 61: ...MB YES 7 You will return to the Level 5 menu In the Level 5 menu select the slot of another hard drive to be included in Array1 and select Yes The slot that was selected in the example below is Slot 3 Figure 6 8 Selecting Yes in the S3 menu ...

Page 62: ... the Subsystem 51 8 Press Esc to return to the Array1 menu Select Slice 1 This will allow you to divide the partition size of the RAID group in Array1 315 Slice 1 3151 Size MB Figure 6 9 Selecting Slice 1 in the Array1 menu ...

Page 63: ...52 RAID 800S User s Manual 9 In the Slice 1 menu select Size 3151 Size MB 0 Figure 6 10 Selecting Size in the Slice 1 menu ...

Page 64: ...nd press Enter 3151 Size MB 4098 Note denotes the last keyed in digit If you want to use the functional buttons on the front panel of the control ler to key in 2048 you must key in 2048 and then press the SEL button denotes ignore Figure 6 11 Entering the size in the Size menu ...

Page 65: ...54 RAID 800S User s Manual 11 Press Esc to return to the Array1 menu Select Slice 2 then select Size 3161 Size MB 0 Figure 6 12 Selecting Size in the Slice 2 menu ...

Page 66: ...In the Size menu enter the size and press Enter 3161 Size MB 0 13 Press Esc until you return to the Main Menu Note You may skip steps 8 to 12 if you do not want to divide the size of the RAID group Figure 6 13 Entering the size in the Size menu ...

Page 67: ...56 RAID 800S User s Manual 14 In the Main Menu select Edit Chan and press Enter 4 Edit Chan 41 Host Chan 1 Figure 6 14 Selecting Edit Chan in the Main Menu ...

Page 68: ...Chapter 6 Configuring the Subsystem 57 15 In the Edit Chan menu select Host Chan 1 41 Host Chan 1 411 SCSI ID Figure 6 15 Selecting Host Chan 1 in the Edit Chan menu ...

Page 69: ...58 RAID 800S User s Manual 16 In the Host Chan 1 menu select a LUN The LUN that was selected in the example below is LUN 0 416 LUN 0 Array1 Slice1 Figure 6 16 Selecting a LUN in the Host Chan 1 menu ...

Page 70: ...Chapter 6 Configuring the Subsystem 59 17 In the LUN 0 menu select Array1 Slice1 Array1 Slice1 18 Press Esc until you return to the Edit Chan menu Figure 6 17 Selecting Array1 Slice1 in the LUN 0 menu ...

Page 71: ...60 RAID 800S User s Manual 19 In the Edit Chan menu select Host Chan 2 42 Host Chan 2 421 SCSI ID Figure 6 18 Selecting Host Chan 2 in the Edit Chan menu ...

Page 72: ...ter 6 Configuring the Subsystem 61 20 In the Host Chan 2 menu select a LUN The LUN that was selected in the example below is LUN 0 426 LUN 0 Array1 Slice1 Figure 6 19 Selecting a LUN in the Host Chan 2 menu ...

Page 73: ...62 RAID 800S User s Manual 21 In the LUN 0 menu select Array1 Slice1 Array1 Slice1 22 Press Esc to return to the Main Menu Figure 6 20 Selecting Array1 Slice1 in the LUN 0 menu ...

Page 74: ...Chapter 6 Configuring the Subsystem 63 23 In the Main Menu select Save Config and press Enter 8 Save Config NO Figure 6 21 Selecting Save Config in the Main Menu ...

Page 75: ...64 RAID 800S User s Manual 24 In the Save Config menu select Yes YES Figure 6 22 Selecting Yes in the Save Config Menu ...

Page 76: ...Chapter 6 Configuring the Subsystem 65 25 In the Main Menu select Restart then select Yes 9 Restart YES Figure 6 23 Selecting Yes in the Restart Menu ...

Page 77: ...g RAID Warning The steps below will guide you into deleting an existing RAID All previously configured RAID will be deleted 1 In the Main Menu select Edit Chan and press Enter 4 Edit Chan 41 Host Chan 1 Figure 6 24 Selecting Edit Chan in the Main Menu ...

Page 78: ...Chapter 6 Configuring the Subsystem 67 2 In the Edit Chan menu select Host Chan 1 41 Host Chan 1 411 SCSI ID Figure 6 25 Selecting Host Chan 1 in the Edit Chan Menu ...

Page 79: ...D 800S User s Manual 3 In the Host Chan 1 menu select the LUN to be deleted The LUN that was selected in the example below is LUN 0 416 LUN 0 Array1 Slice1 Figure 6 26 Selecting a LUN in the Host Chan 1 Menu ...

Page 80: ...Chapter 6 Configuring the Subsystem 69 4 In the LUN 0 menu select Erase 416 LUN 0 Erase Figure 6 27 Selecting Erase in the LUN 0 Menu ...

Page 81: ...70 RAID 800S User s Manual 5 Press Esc to return to the Edit Chan menu Select Host Chan 2 42 Host Chan 2 421 SCSI ID Figure 6 28 Selecting Host Chan 2 in the Edit Chan Menu ...

Page 82: ...nfiguring the Subsystem 71 6 In the Host Chan 2 menu select the LUN to be deleted The LUN that was selected in the example below is LUN 0 426 LUN 0 Array1 Slice1 Figure 6 29 Selecting a LUN in the Host Chan 2 Menu ...

Page 83: ...72 RAID 800S User s Manual 7 In the LUN 0 menu select Erase 426 LUN 0 Erase 8 Press Esc until you return to the Main Menu Figure 6 30 Selecting Erase in the LUN 0 Menu ...

Page 84: ...Chapter 6 Configuring the Subsystem 73 9 In the Main Menu select Save Config and press Enter 8 Save Config NO Figure 6 31 Selecting Save Config in the Main Menu ...

Page 85: ...74 RAID 800S User s Manual 10 In the Save Config menu select Yes YES Figure 6 32 Selecting Yes in the Save Config Menu ...

Page 86: ...Chapter 6 Configuring the Subsystem 75 11 You will return to the Main Menu In the Main Menu select Edit Array 3 Edit Array 31 Array1 Figure 6 33 Selecting Edit Array in the Main Menu ...

Page 87: ...76 RAID 800S User s Manual 31 Array1 311 Level 5 12 In the Edit Array menu select Array1 and press Enter Figure 6 34 Selecting Array1 in the Edit Array Menu ...

Page 88: ...Chapter 6 Configuring the Subsystem 77 13 In the Array1 menu select Erase 319 Erase NO Figure 6 35 Selecting Erase in the Array1 Menu ...

Page 89: ...78 RAID 800S User s Manual 14 In the Erase menu select Yes YES 15 Press Esc until you return to the Main Menu Figure 6 36 Selecting Yes in the Erase Menu ...

Page 90: ...Chapter 6 Configuring the Subsystem 79 16 In the Main Menu select Save Config 8 Save Config NO Figure 6 37 Selecting Save Config in the Main Menu ...

Page 91: ...80 RAID 800S User s Manual 17 In the Save Config menu select Yes Warning All previously configured RAID will be deleted YES Figure 6 38 Selecting Yes in the Save Config Menu ...

Page 92: ...d to function the front panel of the controller will show the slot number of the failed drive Replace the defective drive and rebuild RAID Refer to section 3 2 for instructions on replacing a hard drive 1 In the Main Menu select Utility and press Enter A Utility A1 Beeper Figure 6 39 Selecting Utility in the Main Menu ...

Page 93: ...82 RAID 800S User s Manual 2 In the Utility menu select Rebuild A5 Rebuild NO 3 In the Rebuild menu select Yes Figure 6 40 Selecting Rebuild in the Utility Menu ...

Page 94: ...apter 6 Configuring the Subsystem 83 6 5 Changing the Host Channel s SCSI ID 1 In the Main Menu select Edit Chan and press Enter 4 Edit Chan 41 Host Chan 1 Figure 6 41 Selecting Edit Chan in the Main Menu ...

Page 95: ...84 RAID 800S User s Manual 2 In the Edit Chan menu select Host Chan 1 41 Host Chan 1 411 SCSI ID Figure 6 42 Selecting Host Chan 1 in the Edit Chan Menu ...

Page 96: ...iguring the Subsystem 85 3 In the Host Chan 1 menu select SCSI ID 411 SCSI ID ID 0 4 In the SCSI ID menu select ID 1 5 Press Esc until you return to the Main Menu Figure 6 43 Selecting SCSI ID in the Host Chan 1 Menu ...

Page 97: ...86 RAID 800S User s Manual 6 In the Main Menu select Save Config and press Enter 8 Save Config NO Figure 6 44 Selecting Save Config in the Main Menu ...

Page 98: ...Chapter 6 Configuring the Subsystem 87 7 In the Save Config menu select Yes YES Figure 6 45 Selecting Yes in the Save Config Menu ...

Page 99: ...88 RAID 800S User s Manual 6 6 Configuring Your Terminal 1 In the Main Menu select RS232 Params and press Enter 6 RS232 Params 61 MODEM Port Figure 6 46 Selecting RS232 Params in the Main Menu ...

Page 100: ...Chapter 6 Configuring the Subsystem 89 2 In the RS232 Params menu select Terminal Port and press Enter 62 Terminal Port 621 Baud Rate Figure 6 47 Selecting Terminal Port in the RS232 Params Menu ...

Page 101: ...90 RAID 800S User s Manual 3 In the Terminal Port menu select Baud Rate and press Enter 621 Baud Rate 2400 Figure 6 48 Selecting Baud Rate in the Terminal Port Menu ...

Page 102: ...ubsystem 91 4 In the Baud Rate menu select the baud rate of your terminal and press Enter 19200 5 You will return to the Terminal Port menu Select Stop Bit and press Enter Figure 6 49 Selecting the Baud Rate in the Baud Rate Menu ...

Page 103: ... User s Manual 622 Stop Bit 1 6 In the Stop Bit menu select 1 or 2 and press Enter 7 You will return to the Terminal Port menu Select Data Bit and press Enter Figure 6 50 Selecting the Stop Bit in the Stop Bit Menu ...

Page 104: ...Subsystem 93 8 In the Data Bit menu select the appropriate data bit and press Enter 623 Data Bit 8 Figure 6 51 Selecting the Data Bit in the Data Bit Menu 9 You will return to the Terminal Port menu Select Parity and press Enter ...

Page 105: ...94 RAID 800S User s Manual 624 Parity None 10 In the Parity menu select Odd Even or None Press Enter Figure 6 52 Selecting Odd Even or None in the Parity Menu ...

Page 106: ...Chapter 6 Configuring the Subsystem 95 6 7 Setting Your Password 1 In the Main Menu select User Params and press Enter 7 User Params 71 Passwd Info Figure 6 53 Selecting User Params in the Main Menu ...

Page 107: ...96 RAID 800S User s Manual 2 In the User Params menu select Passwd Info and press Enter 71 Passwd Info 711 Passwd Check Figure 6 54 Selecting Passwd Info in the User Params Menu ...

Page 108: ...Chapter 6 Configuring the Subsystem 97 3 In the Passwd Info menu select Passwd Check 711 Passwd Check ENABLE Figure 6 55 Selecting Passwd Check in the Passwd Info Menu ...

Page 109: ...98 RAID 800S User s Manual 4 In the Passwd Check menu select Enable and press Enter ENABLE Figure 6 56 Selecting Enable in the Passwd Check Menu ...

Page 110: ... Passwd Info menu Select Set Passwd and press Enter 712 Set Passwd 0 6 In the Set Passwd menu enter your password and press Enter You may also choose not to enter a password The default password is 8 zeros 0 Figure 6 57 Entering the Password in the Set Passwd Menu ...

Page 111: ...100 RAID 800S User s Manual 6 8 RAID Array Consistency Check 1 In the Main Menu select Utility and press Enter A Utility A1 Beeper Figure 6 58 Selecting Utility in the Main Menu ...

Page 112: ...Chapter 6 Configuring the Subsystem 101 Figure 6 59 Selecting Array Check in the Utility Menu 2 In the Utility menu select Array Check and press Enter A2 Array Check A21 Array 1 ...

Page 113: ...e Array Check menu select the array you would like to check then press Enter The array that was selected in the example below is Array 1 A21 Array 1 STOP 4 In the Array 1 menu select Start Figure 6 60 Selecting Start in the Array 1 Menu ...

Page 114: ...6 Configuring the Subsystem 103 5 View Config 51 Slot Num 6 9 Viewing the RAID Controller s Configuration 1 In the Main Menu select View Config and press Enter Figure 6 61 Selecting View Config in the Main Menu ...

Page 115: ...ser s Manual Figure 6 62 Entering the Slot Number in the Slot Num Menu 51 Slot Num 8 2 In the View Config menu select Slot Num and press Enter 3 In the Slot Num menu enter the slot number of the drive and press Enter ...

Page 116: ...Chapter 6 Configuring the Subsystem 105 4 You will return to the View Config menu Choose Select Slot and press Enter 52 Select Slot 1 Figure 6 63 Entering the Slot Number in the Select Slot Menu ...

Page 117: ...and press Enter The Select Slot menu shows the device channel where the drive is connected the ID of the drive vendor ID and capacity of the drive After viewing these configurations press Esc 52 Select Slot Chan 1 ID 0 Figure 6 64 Viewing Configurations in the Select Slot Menu ...

Page 118: ...ill return to the View Config menu Select an array and press Enter This menu will allow you to view the RAID level slice number and other information of the drives in the array 53 Array1 Level 5 Figure 6 65 Viewing Configurations in the Array1 Menu ...

Page 119: ...108 RAID 800S User s Manual 7 Press Esc to return to the View Config menu Select Host1 and press Enter 57 Host1 SCSI ID 0 Figure 6 66 Viewing Configurations in the Host1 Menu ...

Page 120: ...ide SCSI Subsystem This section describes the steps on enabling disabling the Ultra and Wide functions of the Host channels and Disk channels 1 In the Main Menu select Edit Chan and press Enter 4 Edit Chan 41 Host Chan 1 Figure 6 67 Selecting Edit Chan in the Main Menu ...

Page 121: ...110 RAID 800S User s Manual 2 In the Edit Chan menu select Host Chan 1 41 Host Chan 1 411 SCSI ID Figure 6 68 Selecting Host Chan 1 in the Edit Chan Menu ...

Page 122: ...nfiguring the Subsystem 111 3 In the Host Chan 1 menu select SCSI ID 411 SCSI ID ID 0 Figure 6 69 Selecting SCSI ID in the Host Chan 1 Menu 4 In the SCSI ID menu select ID 0 You will return to the Host Chan 1 menu ...

Page 123: ...112 RAID 800S User s Manual 5 Select Wide and press Enter In the Wide menu select Enable 414 Wide ENABLE Figure 6 70 Selecting Enable in the Wide Menu ...

Page 124: ...5 Ultra ENABLE 6 You will return to the Host Chan 1 menu Select Ultra and press Enter In the Ultra menu select Enable Figure 6 71 Selecting Enable in the Ultra Menu 7 Press Esc to return to the Edit Chan menu Select Disk Chan 1 and press Enter ...

Page 125: ...D 800S User s Manual 431 Wide ENABLE 8 In the Disk Chan 1 menu select Wide and press Enter 9 In the Wide menu select Enable You will return to the Disk Chan 1 menu Figure 6 72 Selecting Enable in the Wide Menu ...

Page 126: ...Chapter 6 Configuring the Subsystem 115 10 In the Disk Chan 1 menu select Ultra and press Enter 432 Ultra ENABLE 11 In the Ultra menu select Enable Figure 6 73 Selecting Enable in the Ultra Menu ...

Page 127: ...0S User s Manual 6 11 Main Menu The Main Menu consists of the following menus Edit Chasis Quick Setup Edit Array Edit Chan View Config RS232 Params User Params Save Config Restart and Utility Figure 6 74 Main Menu ...

Page 128: ...2 12 Slot Num 6 42 13 Edit Slot 131 Chan 1 ID 0 15 132 Chan 2 ID 0 15 133 Chan 3 ID 0 15 14 Stripe Size 4 8 16 32 64 128 sectors 2 Quick Setup 21 Level 5 211 Disk Number 1 8 212 YES NO 22 Level 3 221 Disk Number 1 8 222 YES NO 23 Level 1 231 Disk Number 1 8 232 YES NO 24 Level 0 241 Disk Number 1 8 242 YES NO 25 Level 0 1 251 Disk Number 1 8 252 YES NO ...

Page 129: ... 33 Array3 34 Array4 35 Write Cache ENABLE DISABLE 4 Edit Chan 41 Host Chan 1 411 SCSI ID 0 15 412 Terminator ENABLE DISABLE 413 Tag Queue ENABLE DISABLE 414 Wide ENABLE DISABLE 415 Ultra ENABLE DISABLE 416 LUN 0 Array1 Slice1 Array1 Slice2 Erase 417 LUN 1 418 LUN 2 419 LUN 3 41A LUN 4 41B LUN 5 41C LUN 6 41D LUN 7 42 Host Chan 2 43 Disk Chan 1 431 Wide ENABLE DISABLE 432 Ultra ENABLE DISABLE 44 D...

Page 130: ... Stop Bit 1 2 613 Data Bit 7 8 614 Parity None Odd Even 62 Terminal Port 621 Baud Rate 2400 115200 622 Stop Bit 1 2 623 Data Bit 7 8 624 Parity None Odd Even 7 User Params 71 Passwd Info 711 Passwd Check ENABLE DISABLE 712 Set Passwd 72 Pager Info 721 Paging ENABLE DISABLE 722 Pager1 No 723 Pager2 No 724 Code 725 Repeat 5 10 15 20 726 Interval min 5 10 15 20 727 Page Now YES NO 73 FAX Info 731 FAX...

Page 131: ...2 Array Check A21 Array1 Start Stop A22 Array2 Start Stop A23 Array3 Start Stop A24 Array4 Start Stop A3 Add Slot 1 42 A4 Remove Slot 1 42 A5 Rebuild NO YES A6 Spin Time 20 40 60 sec A7 Stop Modem NO YES A8 Update ROM Figure 6 75 Edit Chasis Menu 6 11 1 Edit Chasis ...

Page 132: ...is is used to define the total number of hard drives in the slots used This includes the hard drives after they have been chained The default is 8 Edit Slot This is used to define the device channel and ID of a hard drive in a particular slot Stripe Size The options are 4 8 16 32 and 64 The default is 16 Warning The settings in the Edit Chasis menu have been predefined These settings should not be...

Page 133: ...ual Quick Setup is used to define the RAID Level to be assigned to an array being created and the number of drives that comprise the array Refer to Chapter 5 for more information 6 11 2 Quick Setup Figure 6 76 Quick Setup Menu ...

Page 134: ...ate and select the hard drives that would comprise the array Note The Write Cache function must be enabled This provides faster data transmission because data are transmitted to the cache memory first before being transmitted to the hard drives If this function is disabled data will be transmitted directly to the hard drives which is slower Figure 6 77 Edit Array Menu ...

Page 135: ...you must define the host channel where your Host is connected SCSI ID This is used to assign a SCSI ID Terminator If the Host controller will be the last SCSI device enable this function Tag Queue When Enabled the SCSI channel is able to queue SCSI connect Wide and Ultra These functions must always be enabled Figure 6 78 Edit Chan Menu ...

Page 136: ...host by its logical unit number LUN LUN sets the usable capacity for the logical unit being created Note You must assign a SCSI ID for every Host channel 6 11 5 View Config This menu allows you to view the settings you have defined earlier such as the number of slots used the vendor ID and capacity of your hard drives the drives that have been grouped into a RAID array configuration of the host ch...

Page 137: ...126 RAID 800S User s Manual 6 11 6 RS232 Params This menu is used to define the baud rate stop bit data bit and parity of the modem and terminal attached to your subsystem Figure 6 80 RS232 Params Menu ...

Page 138: ...case a hard drive fails to function your pager will beep you informing that a problem has arised You can set the number of times your pager will page you and the time interval between each page FAX Info This function allows you to set two fax numbers In case a hard drive fails to function a message will be transmitted to your fax machine informing you that a problem has arised You can set the numb...

Page 139: ...RAID 800S User s Manual 6 11 8 Save Config When you have made changes to the setup utility remember to always save the new or modified configuration before you exit the utility Figure 6 82 Save Config Menu ...

Page 140: ...Chapter 6 Configuring the Subsystem 129 6 11 9 Restart Restart the controller to activate the settings Figure 6 83 Restart Menu ...

Page 141: ...ove Slot and Rebuild Since your subsystem is able to auto detect the slot that has been added removed or rebuilt you may ignore these three categories Spin Time This is used to define the spin up time of the hard drives For hard drives with larger capacity you must select a longer spin up time Update ROM This is used to update the firmware residing in the controller Figure 6 84 Utility Menu ...

Page 142: ...C H A P T E R 7 Configuring Faxes and Pagers ...

Page 143: ... your modem is properly connected to the serial modem port at the rear of the system unit 7 1 Configuring the Modem Port 1 In the Main Menu select RS232 Params and press Enter 6 RS232 Params 61 MODEM Port Figure 7 1 Selecting RS232 Params in the Main Menu ...

Page 144: ...Chapter 7 Configuring Faxes and Pagers 133 2 In the RS232 Params menu select Modem Port and press Enter 61 MODEM Port 611 Baud Rate Figure 7 2 Selecting Modem Port in the RS232 Params Menu ...

Page 145: ... s Manual 3 In the Modem Port menu select Baud Rate and press Enter 611 Baud Rate 19200 4 In the Baud Rate menu select the baud rate of your modem and press Enter Figure 7 3 Selecting the Baud Rate in the Baud Rate Menu ...

Page 146: ...ing Faxes and Pagers 135 Figure 7 4 Selecting the Stop Bit in the Stop Bit Menu 5 You will return to the Modem Port menu Select Stop Bit and press Enter 612 Stop Bit 1 6 In the Stop Bit menu select 1 or 2 and press Enter ...

Page 147: ... Manual 7 You will return to the Modem Port menu Select Data Bit and press Enter 613 Data Bit 8 8 In the Data Bit menu select the appropriate data bit and press Enter Figure 7 5 Selecting the Data Bit in the Data Bit Menu ...

Page 148: ...You will return to the Modem Port menu Select Parity and press Enter 614 Parity None Figure 7 6 Selecting Odd Even or None in the Parity Menu 10 In the Parity menu select Odd Even or None Press Enter 11 Press Esc until you return to the Main Menu ...

Page 149: ...pager numbers In case a hard drive fails to function your pager will beep you informing that a problem has arised You can set the number of times your pager will page you and the time interval between each page 1 In the Main Menu select User Params and press Enter Figure 7 7 Selecting User Params in the Main Menu ...

Page 150: ...Chapter 7 Configuring Faxes and Pagers 139 2 In the User Params menu select Pager Info and press Enter 72 Pager Info 721 Paging Figure 7 8 Selecting Pager Info in the User Params Menu ...

Page 151: ...140 RAID 800S User s Manual 3 In the Pager Info menu select Paging and press Enter 721 Paging DISABLE 4 In the Paging menu select Enable and press Enter Figure 7 9 Selecting Enable in the Paging Menu ...

Page 152: ... will return to the Pager Info menu Select Pager1 No and press Enter 722 Pager1 No 0 Figure 7 10 Entering the Pager Number in the Pager1 No Menu 6 In the Pager1 No menu type in the Pager number and press Enter You can enter a maximum of 16 characters ...

Page 153: ...o menu If you wish to enter another pager number select Pager2 No and press Enter 723 Pager2 No 0 8 In the Pager2 No menu type in the Pager number and press Enter You can enter a maximum of 16 characters Figure 7 11 Entering the Pager Number in the Pager2 No Menu ...

Page 154: ...return to the Pager Info menu Select Code and press Enter 724 Code 5 10 In the Code menu you can type your message code by entering a maximum of 16 alphanumeric characters After entering your code press Enter Figure 7 12 Entering the Code in the Code Menu ...

Page 155: ...11 You will return to the Pager Info menu Select Repeat and press Enter 725 Repeat 5 12 In the Repeat menu select the number of times you would like to page the number Press Enter Figure 7 13 Selecting a Number in the Repeat Menu ...

Page 156: ... Figure 7 14 Selecting the Time Interval in the Interval Menu 13 You will return to the Pager Info menu Select Interval and press Enter 726 Interval 5 14 In the Interval menu select the time interval in minutes between each page and press Enter ...

Page 157: ...ou will return to the Pager Info menu Select Page Now and press Enter This is used to check whether your page number is correct and that your pager is working normally 727 Page Now Figure 7 15 Selecting Page Now in the Pager Info Menu ...

Page 158: ... two fax numbers In case a hard drive fails to function a message will be transmitted to your fax machine informing you that a problem has arised You can set the number of times it will retry in case the line is busy 1 In the Main Menu select User Params and press Enter Figure 7 16 Selecting User Params in the Main Menu ...

Page 159: ...148 RAID 800S User s Manual 2 In the User Params menu select FAX Info and press Enter 73 FAX Info 731 FAX Figure 7 17 Selecting FAX Info in the User Params Menu ...

Page 160: ...Chapter 7 Configuring Faxes and Pagers 149 3 In the FAX Info menu select FAX and press Enter 731 FAX ENABLE Figure 7 18 Selecting Enable in the FAX Menu 4 In the FAX menu select Enable and press Enter ...

Page 161: ... User s Manual 5 You will return to the FAX Info menu Select FAX1 No and press Enter 733 FAX1 No 0 6 In the FAX1 No menu type in the FAX number and press Enter Figure 7 19 Entering the Fax Number in the FAX1 No Menu ...

Page 162: ...1 7 You will return to the FAX Info menu If you wish to enter another FAX number select FAX2 No and press Enter 734 FAX2 No 0 8 In the FAX2 No menu type in the FAX number and press Enter Figure 7 20 Entering the Fax Number in the FAX2 No Menu ...

Page 163: ...the Retry menu select the number of times you would like to retry transmitting the fax Press Enter 11 You will return to the FAX Info menu Select FAX Now and press Enter This is used to check whether the FAX numbers are correct and that the faxes are working normally Figure 7 21 Selecting a Number in the Retry Menu ...

Page 164: ...ter 7 Configuring Faxes and Pagers 153 Figure 7 22 Selecting Company Info in the User Params Menu 12 You will return to the User Params menu Select Company Info and press Enter 74 Company Info 741 String 1 ...

Page 165: ...acters 741 String 1 0 14 If the information entered in String 1 is not enough you may enter some more information by selecting String 2 You can also enter a maximum of 16 characters 15 You will return to the User Params menu Select Modem Init st This is used to configure the AT command of the modem Figure 7 23 Entering Information in the String 1 Menu ...

Page 166: ...C H A P T E R 8 Upgrading Your Firmware This chapter describes the procedure in downloading the firmware from the WEB site to upgrade RAID 800S ...

Page 167: ...download the latest firmware from Advantech s web site The address is http www advantech com To upgrade your firmware follow the steps below 1 In the Main Menu select Utility and press Enter 2 In the Utility menu select Update ROM and press Enter Figure 8 1 Selecting Update ROM in the Utility Menu ...

Page 168: ...the menu bar select Transfer menu 6 The Transfer scroll down menu will appear Select Send Text File 7 The Send Text File dialog box will appear Select the drive and file where the new firmware is located and click Open Figure 8 2 Typing Y to Download the New Firmware 3 The screen below will appear Type Y ...

Page 169: ...anual 9 You will be asked to reconfirm Type Go again 8 After the file has been completely transmitted type Go Figure 8 3 Typing Go After the File has been Transmitted 10 The controller will restart Figure 8 4 Typing Go Again ...

Page 170: ...A RAID Levels This appendix describes the various RAID levels supported by RAID 800S A P P E N D I X ...

Page 171: ...three and so on This method can significantly increase disk system throughput particularly for transferring large sequential data blocks A 2 RAID 1 Mirroring Mirroring refers to the 100 duplication of data from one disk drive onto another Each disk contains the mirror image of the data on the other drive A 3 RAID 0 1 Striping and Mirroring Hard drives will be striped first then mirrored It require...

Page 172: ...equires only a fraction of the storage capacity than mirroring for storing redundant information In a system configured under RAID 5 which requires at least three SCSI drives all data and parity blocks are divided between the drives in such a way that if any single drive is removed or fails the data on the missing drive can be reconstructed using the data on the remaining drives ...

Page 173: ...162 RAID 800S User s Manual ...

Page 174: ...B Technical Specifications Array Controller Configuration A P P E N D I X ...

Page 175: ...nd monitor port Yes Yes Yes 2 fax numbers Yes 2 pager numbers Form factor RAID processor RAID level Cache memory No of channels host disk No of disks Maximum storage Host bus interface Disk bus interface Data transfer MTBF hrs B 1 Array Controller 5 1 4 half height 486DX 0 1 0 1 3 and 5 8MB 128MB 2 2 SCSI channels 7 30GB 120GB Fast Wide Ultra Fast Wide Ultra Up to 40MB 100 000 B 2 Configuration ...

Page 176: ...C RAID Controller s Error Messages A P P E N D I X ...

Page 177: ...failed Number indicates the slot of the hard disk that failed to function The subsystem s Fan 1 or Fan 2 failed The subsystem s Power 1 or Power 2 failed The RAID controller s Host channel failed The RAID controller s Device channel failed The controller is unable to detect previous RAID configuration in group two or more disks Level 0 s one or more disks Error Messages FAIL n FAIL Fan FAIL Power ...

Page 178: ...D Mapping the LUN of the Host Channel to the Slices of an Array This appendix shows an example of mapping LUN to Slices D1 D2 A P P E N D I X ...

Page 179: ... array can then be partitioned into four Slices Slice 1 to Slice 4 The concept of Slice is the same as partitioning a hard disk drive Therefore each LUN on the host channel will be mapped to some of the Slices in an array 5 In the example on the next page 4 x 4GB HDDs are installed in the RAID 800S subsystem and are configured as Array 1 of Level 5 The total available disk capacity will be 12GB 4 ...

Page 180: ... Host Channel to the Slices of an Array 169 Figure D 1 An Example of the Mapping Principle Host 1 Host channel 1 LUN 0 LUN 1 LUN 7 Host 2 Host channel 2 LUN 0 LUN 1 LUN 7 ARRAY 1 12 GB Slice 1 4 GB Slice 2 8 GB ARRAY 4 Slice 1 Slice 4 ...

Page 181: ...170 RAID 800S User s Manual ...

Page 182: ...E Frequently Asked Questions A P P E N D I X ...

Page 183: ...ange the RAID level A You can on line add a spare hard disk drive into an empty slot but it will not expand the total capacity of the RAID subsystem this function will be available in the near future On the other hand on line changing the RAID level is definitely not allowed Q While dialing the pager through a modem is it possible to use between digits to stop for a second A YES Especially when di...

Page 184: ... same slice of the same array A NO RAID 800S does not provide the database lock unlock function therefore it is not recommended to map different LUNs to the same slice of the same array This kind of mapping is just like two different application programs accessing the same database without any control ...

Page 185: ...174 RAID 800S User s Manual ...

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