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Chapter

External Cache Battery

This chapter contains information concerning the ECB, including product description,
configuration, and status indications.

Product Description

To preserve write-back cache data in the event of a power failure, each cache module must
be connected to an ECB. ECBs are installed in the front of the enclosure (see Figure 6–1).

Figure 6–1. ECB bay locations

CXO6864A

Содержание StorageWorks 2100

Страница 1: ...Compaq StorageWorks Third Edition June 2000 Part Number EK SE2C8 UA C01 Compaq Computer Corporation Model 2100 and 2200 Ultra SCSI Controller Enclosures User Guide...

Страница 2: ...OR ANY DIRECT CONSEQUENTIAL INCIDENTIAL SPECIAL PUNITIVE OR OTHER DAMAGES WHATSOEVER INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION OR LOSS OF BUSINESS INFORMA...

Страница 3: ...ments xvi Chapter 1 Introducing the Controller Enclosure Product Description 1 2 Prerequisites 1 3 Enclosure Power 1 5 Controller Sets 1 5 Storage CRUs 1 5 Ultra SCSI Buses 1 6 Communication Ports 1 6...

Страница 4: ...tion 3 2 Functionality 3 2 Status Indications 3 3 Audible Alarm 3 4 Alphanumeric Displays 3 5 SCSI Target ID Address 3 5 Horn Mode 3 6 Error Codes 3 6 EMU Reset Conditions 3 8 Alarm Reminder Tones 3 8...

Страница 5: ...pply 8 8 ECB Battery Pack and ECB 8 10 Replacing an ECB Battery Pack 8 10 Replacing an ECB 8 12 Fan 8 14 Array Controllers and Cache Modules 8 16 Removing an Array Controller or Cache Module 8 17 Inst...

Страница 6: ...Connecting Ultra SCSI Bus Cables and Host Cabling C 3 Ultra SCSI Bus Cables C 3 Host Cables C 4 Installing the Power Supplies C 4 Configuring the Enclosure C 4 Appendix D Error Code Data Alarms D 2 Fa...

Страница 7: ...ternal connector view 4 2 Figure 4 3 I O module bay and bus number correlation 4 2 Figure 5 1 Power supply locations 5 1 Figure 5 2 180 W power supply bezel label 5 2 Figure 5 3 Power supply status LE...

Страница 8: ...he module locations 8 16 Figure 8 11 Array controller removal and installation 8 16 Figure 8 12 Cache module removal and installation 8 17 Figure A 1 Product label showing country specific certificati...

Страница 9: ...ing an EMU 8 5 Table 8 3 Installing an EMU 8 5 Table 8 4 Removing an I O Module 8 7 Table 8 5 Installing an I O Module 8 7 Table 8 6 Removing a Power Supply 8 8 Table 8 7 Installing a Power Supply 8 9...

Страница 10: ...mental Specifications B 4 Table B 5 Nonoperating Environmental Specifications B 4 Table C 1 Procedural References for Removing Elements C 2 Table C 2 Installing Ultra SCSI Bus Cables C 4 Table D 1 Ala...

Страница 11: ...figuring installing and maintaining SCSI controller enclosures How This Guide is Arranged This manual discusses the enclosure and its major elements The manual is organized as follows Chapter 1 Introd...

Страница 12: ...d status indications Chapter 6 External Cache Battery Provides the external cache battery ECB product description status indications and configuration Chapter 7 Fans Provides the fan assembly product...

Страница 13: ...ks array controller as an HSG series array controller however any array controller supported by the Model 2100 or 2200 enclosure can be installed Model 2100 enclosures use array controllers that suppo...

Страница 14: ...for horn mode and En for enabled SMALL CAPS Used to indicate the status of an LED For example FLASHING means turning on and off ON means on and OFF means off italic type Italic type emphasizes import...

Страница 15: ...rning indicates the presence of a hazard that can cause personal injury if precautions in the text are not observed CAUTION A caution indicates the presence of a hazard that might damage hardware corr...

Страница 16: ...ion Guide EK HSG85 CG HSG60 HSG80 Array Controller ACS Version 8 n1 CLI Reference Guide EK HSG85 RG HSG60 HSG80 Array Controller ACS Version 8 n1 Maintenance and Service Guide EK HSG84 SV HSJ80 Array...

Страница 17: ...x storage enclosures This chapter describes the enclosure and its major elements called customer replaceable units CRUs and various enclosure options Figure 1 1 illustrates a Model 2100 enclosure Figu...

Страница 18: ...to support array controller operations One cache is required per array controller Each cache requires an external cache battery ECB ECB Four ECB bays are provided but the enclosure supports only two E...

Страница 19: ...es for any empty enclosure element location to prevent a potential overtemperature condition Since only two ECB bays are used at any one time one per cache module install a blank in any vacant ECB bay...

Страница 20: ...dentifies major element locations within the enclosure Figure 1 3 Major element mounting locations front and rear NOTE Model 2100 enclosures support only two I O modules whereas Model 2200 enclosures...

Страница 21: ...quires an ECB module for each cache Refer to the array controller documentation for information about using controller sets and ECBs The following Compaq StorageWorks array controller types function p...

Страница 22: ...ct the enclosure to the storage enclosures The following addresses are reserved for the array controllers SCSI bus ID 7 always used by Controller A initially assuming primary controller responsibiliti...

Страница 23: ...the most effective and efficient method of ensuring continuous system operation and eliminates any one element as a single point of failure Power Monitoring Devices Important electrical aspects for co...

Страница 24: ...maximum supported cable length is 3 m 9 8 ft Table 1 3 lists the available bus cables Table 1 2 Serial Port Pinout for Power Monitoring Connector Pin Signal Name Serial port connector Pins 10 9 8 7 6...

Страница 25: ...ltra SCSI standard and hardware configuration rules In some instances operating system specific configuration rules might also apply General The following rules apply to the Ultra SCSI FAST 20 bus for...

Страница 26: ...se as supported by the ACS version RAID Controllers The following general configuration rules apply to Compaq StorageWorks RAID array controllers Controller A is the primary controller and always uses...

Страница 27: ...ng AC power to the enclosure completely configure the entire subsystem including the host and array controller cabling as described in the appropriate publications Fault Detection Fault detection invo...

Страница 28: ......

Страница 29: ...y EMU including product description configuration functionality and status indications Product Description The EMU monitors the enclosure status reports error conditions and controls some enclosure fu...

Страница 30: ...isolation occurs without an EMU installed Functionality Table 3 1 lists functions monitored by the EMU Table 3 1 EMU Monitored Functions Element Function Monitored Rack Power faults Enclosure Intake...

Страница 31: ...Table 3 2 1 EMU status LED 2 Power status LED 3 Enclosure fault LED 4 Alphanumeric display 5 Increment switch LED 6 Group switch LED Table 3 2 EMU Alarm Types Alarm Type Description Audible A high pi...

Страница 32: ...e alarm turns off when the horn is muted Unmute Press and hold the group switch for approximately 2 seconds The group switch LED turns OFF and the audible alarm can sound when the horn is unmuted The...

Страница 33: ...2 3 4 5 6 7 8 9 A b C d E F G H h i J L n o P r t U y and CAUTION Display of any character not listed above is an invalid display and indicates an EMU error condition The alphanumeric display present...

Страница 34: ...pe that generated the error and its associated element number such as power supply number 2 0 3 Level 2 Element number two decimal characters and one period such as 02 Level 3 Error code two decimal c...

Страница 35: ...atically reverts to its SCSI target ID default display Figure 3 4 illustrates how to navigate through the multilevel error code displays Appendix D contains detailed information pertaining to error co...

Страница 36: ...esence of error conditions and one that indicates when Ho mode is disabled or the audible alarm is muted Three operating status LEDs see Figure 3 2 1 2 and 3 display the operating status of the EMU an...

Страница 37: ...ation Product Description Enclosure I O modules are Ultra SCSI single ended I O modules and are located in the rear of the enclosure see Figure 4 1 Their functions include Terminating each external Ul...

Страница 38: ...ure supports all six I O modules that interface with a storage enclosure using a VHDCI SCSI bus cable Figure 4 2 I O module and external connector view Figure 4 3 I O module bay and bus number correla...

Страница 39: ...and status indications Product Description Each power supply converts an AC voltage into 5 VDC and 12 VDC power required for enclosure operations These DC voltages are distributed to enclosure element...

Страница 40: ...Figure 5 2 Figure 5 2 180 W power supply bezel label One power supply supports all enclosure operations A second power supply provides power redundancy to eliminate the power supply as a single point...

Страница 41: ...ly is operating normally If the power supply fails both LEDs turn OFF See Table 5 1 for a definition of selected power supply status LED displays and a description for each state 1 Shelf status LED 2...

Страница 42: ......

Страница 43: ...cription configuration and status indications Product Description To preserve write back cache data in the event of a power failure each cache module must be connected to an ECB ECBs are installed in...

Страница 44: ...tion As shown in Figure 6 1 the enclosure has four ECB bays Each array controller and cache set within the enclosure requires an ECB ECB bays A1 and A2 see Figure 6 1 3 and 4 support Cache A ECB bays...

Страница 45: ...turns ON to indicate a charging ECB battery This LED FLASHES during the ECB startup self test The amber ECB fault LED 3 turns ON to indicate a bad battery The ECB fault LED begins FLASHING if The ECB...

Страница 46: ...SH rates are possible FLASH rate of once every second indicates that the either ECB battery is not properly plugged into the ECB circuit board or the battery temperature is out of limits FLASH rate of...

Страница 47: ...This operating environment involves establishing and maintaining the correct ambient temperature Failure to maintain a proper operating environment might cause the elements to malfunction and comprom...

Страница 48: ...e at high speed by default Otherwise the EMU directs the operating speed of the fans Fans are numbered from left to right Fan 1 Fan 2 and Fan 3 respectively as viewed from the front of the enclosure f...

Страница 49: ...ch fan module contains status LEDs that indicate its current operating status see Figure 7 2 Figure 7 2 Fan status LEDs The green power status LED 1 turns ON when power is applied to the fan This LED...

Страница 50: ...CSI Controller Enclosures User Guide See Table 7 1 for a definition of fan status LED displays Table 7 1 Fan Status LED Displays LED Display Status Description The fan is operating normally A fan faul...

Страница 51: ...ectrostatic discharge ESD procedures that coincide with handling enclosure elements Element Replacement Methods Elements follow either a hot pluggable or a pluggable power on replacement method The de...

Страница 52: ...ices on a grounded surface before removing them from their container Avoid touching the backplane connectors pins leads and exposed circuitry Follow proper grounding methods for handling static sensit...

Страница 53: ...1 Table 8 4 and Table 8 5 Power Supply Hot pluggable redundant power supply configuration Table 8 6 and Table 8 7 ECB Battery Pack Power off only Table 8 8 ECB Array controller dependent Pluggable1 or...

Страница 54: ...losures a blank panel covers the four vacant I O module bays A label affixed to each element identifies its replacement part number see Figure 8 2 1 Use this number to order a replacement element Also...

Страница 55: ...an EMU Figure 8 3 EMU removal and installation Table 8 2 Removing an EMU 1 Press the release tab and pivot the lever 2 Remove the EMU from the enclosure Table 8 3 Installing an EMU 1 Press the release...

Страница 56: ...upport only two I O modules SCSI bus 1 1 and SCSI bus 2 2 whereas Model 2200 enclosures support all six I O modules For Model 2100 enclosures a blank panel covers the four vacant I O module bays The I...

Страница 57: ...ASH simultaneously indicating a quiesced bus 3 Disconnect the bus cable from the I O module being removed see Figure 8 4 4 Unscrew two mounting screws and remove the I O module from the enclosure Tabl...

Страница 58: ...e the procedure in Table 8 7 to install a power supply CAUTION The enclosure requires power supplies rated for at least 180 W Figure 8 6 Power supply removal and installation Table 8 6 Removing a Powe...

Страница 59: ...a Power Supply 1 Verify that the bezel displays this label 2 Insert the power supply until mounting tabs engage the enclosure and lock 3 Connect the power cord to the power supply 4 For hot pluggable...

Страница 60: ...ially charged Determine battery freshness by this born on date label for example DC 03MAR99 means that the battery received its initial charge on March 3 1999 NOTE A fully discharged ECB battery pack...

Страница 61: ...undle 3 Orient the replacement battery pack and wires as shown and fully insert the battery 4 Plug in the battery wire connector 1 5 Reposition the battery retaining bracket 2 and guide the battery wi...

Страница 62: ...eplace the ECB using a vacant bay opening A or B that correlates with the defective ECB This method does not update ECB battery history data This procedure installs the replacement ECB and then remove...

Страница 63: ...ep 3 for hot pluggable procedures 3 Press the release tab and pivot the lever downward on the replacement ECB 4 Remove the blank panel from the vacant bay A or B 5 Insert the ECB into the vacant bay u...

Страница 64: ...CAUTION Operating the enclosure with one fan removed significantly alters the normal air flow pattern and reduces air flow through remaining elements Install a blank bezel to control air flow With tw...

Страница 65: ...release tab and lower the lever 3 Remove the fan from the enclosure Table 8 12 Installing a Fan 1 Press the release tab and pivot the lever 2 Insert the fan until its lever engages the enclosure 3 Li...

Страница 66: ...lled For dual redundant array controller configurations with FRUTIL support follow pluggable procedures otherwise follow power off procedures See Figure 8 10 for array controller and cache module loca...

Страница 67: ...oller specific documentation use procedures in the array controller documentation Removing an Array Controller or Cache Module Table 8 13 provides the procedure for removing an array controller or cac...

Страница 68: ...g the array controller cache module and cabling refer to array controller documentation NOTE After all enclosure elements are installed and power is applied to the enclosure refer to the array control...

Страница 69: ...bear a label indicating its interference potential Electromagnetic Compatibility EMC Certification The equipment has been tested and found to comply with the limits for a Class A digital device pursu...

Страница 70: ...ications NOTE The certification symbols on the label depend upon the certification level For example the FCC Class A certification symbol is not the same as the FCC Class B certification symbol shown...

Страница 71: ...fines the physical electrical and environmental specifications for the Compaq StorageWorks Model 2100 and 2200 Ultra SCSI controller enclosures shown in Figure B 1 and Figure B 2 respectively Figure B...

Страница 72: ...lectrical Specifications Table B 1 provides enclosure physical specifications CXO6321D CXO6322C Table B 1 Physical Specifications Item Height Width Depth Weight Enclosure 150 mm 5 9 in 445 mm 17 5 in...

Страница 73: ...lb 1 Full compliment of elements includes two array controllers and two cache modules 2 ECB weight with battery pack installed Table B 2 Electrical Specifications Item Specification Input voltage 100...

Страница 74: ...tude 0 5 C per 300 m to 3000 m 1 F per 1000 ft to 10 000 ft Relative humidity 10 to 90 at a maximum wet bulb temperature of 28 C 82 F Air quality No to exceed a maximum of 500 000 particles 0 5 micron...

Страница 75: ...ersonal injury Always mount an empty enclosure into a rack prior to installing enclosure devices Use two people to lift align and insert the enclosure into a rack This appendix identifies the recommen...

Страница 76: ...this document and continue with the assembly instructions contained in the following sections Installing Enclosure Front Elements Four types of elements are installed in the enclosure front the EMU EC...

Страница 77: ...icable using Table 8 14 Connecting Ultra SCSI Bus Cables and Host Cabling Ultra SCSI bus cables connect the enclosure to as many as six storage enclosures Host cabling connects the enclosure to a host...

Страница 78: ...s ON when AC source power is applied to the enclosure NOTE Before applying AC power to the enclosure completely configure the entire subsystem including the host and array controller cabling as descri...

Страница 79: ...ing the ID address and error codes The default SCSI target ID id address is disabled CRU types range from 00 through 07 Two decimal points are used one after each character Error codes range from 01 t...

Страница 80: ...display The audible alarm sounds a 2 second steady tone and then three to five beeps The EMU resets 00 is displayed on the alphanumeric display after the EMU resumes normal operations Nonfatal Error...

Страница 81: ...s all errors The GUI does not display fatal errors This alarm establishes the following conditions Maintains highest precedence over all other alarms Sounds the unrecoverable alarm tone constant tone...

Страница 82: ...an prevent this condition from escalating to a critical condition This alarm establishes the following conditions Unrecoverable and critical alarms take precedence over this alarm Maintains precedence...

Страница 83: ...f the various alarm tones become annoying after a few minutes Table D 1 distinguishes the normal alarm tones and the remind tones To avoid this annoyance either disable or mute the horn If disabled no...

Страница 84: ...multiple errors or a recurring error the code is displayed The complete alarm report is stored and can be recalled using a combination of the increment and the group switches Error Code Format The al...

Страница 85: ...this value is identified within the problem definition corrective action for each error code Table D 3 Error Code List Error Code Problem Definition Corrective Action 0 2 01 Noncritical Two error poss...

Страница 86: ...Check for an empty bay or for a high operating environment ambient air temperature Fill any open bay with the required element or blank bezel Reduce the operating environment ambient air temperature...

Страница 87: ...pates the heat generated by the device Also referred to as the intake air temperature array controller A stand alone device that connects a host adapter to the storage SCSI bus This device provides RA...

Страница 88: ...d on electronic devices that are for use in a commercial environment A CE Mark certified device can also be used in the United States channel Another term for a SCSI bus See also SCSI bus CRU Customer...

Страница 89: ...enables the audible alarm horn See also Ho environmental monitoring unit See EMU ESD Electrostatic discharge The discharge of a potentially harmful static electric voltage as a result of improper gro...

Страница 90: ...stem I O bus for example a PCI bus to the storage SCSI bus A host adapter performs the lower layers of the SCSI protocol and normally operates in the initiator role host computer See host host control...

Страница 91: ...e maintenance terminal to configure a storage subsystem MB s Megabytes per second The per second byte transfer rate with a binary multiplier of 1 024 000 The bus width 8 or 16 bit the number of bytes...

Страница 92: ...C to StorageWorks enclosures These supplies can be either AC input 120 VAC or DC input 48 VDC quiescing To make a bus inactive still quiet or dormant rack Another term for cabinet A means for storing...

Страница 93: ...inators The terminators ensure that inactive SCSI bus signals are in a known state There are two basic types of terminators active and passive Single ended bus segments use active linear terminators D...

Страница 94: ...d power supply that provides backup AC power whenever the primary AC power is lost How long backup power is provided depends upon the UPS size and the equipment supported very high density computer in...

Страница 95: ...alarm See also alarm B blank panels 1 3 8 17 bus addressing 2 2 bus transfer rate 2 1 C cabinet installation See rack installation cables connecting to a host 1 5 Ultra SCSI bus 1 8 C 3 cache module...

Страница 96: ...to 3 8 alarm types 3 3 alarm types table 3 3 bezel switches and status LEDs illustrated 3 3 bezel switches LEDs and alphanumeric display 3 3 functions 3 2 installing 8 5 LEDs 3 8 location illustrated...

Страница 97: ...changing the horn mode setting 3 5 communication port location 1 6 ECB bay locations 6 1 8 12 status LEDs 6 3 ECB removal and installation 8 13 element mounting locations 8 4 EMU bezel switches and st...

Страница 98: ...Model 2100 to a Model 2200 enclosure 1 7 overtemperature condition 8 14 overtemperature condition fan response 7 2 P physical specifications B 2 physical specifications table B 2 pluggable elements ar...

Страница 99: ...D displays 6 4 electrical specifications B 3 element ID numbers D 6 element replacement methods and procedures 8 3 EMU alarm types 3 3 EMU monitored functions 3 2 enclosure UPS specifications B 3 erro...

Страница 100: ...uninterruptable power supply See UPS upgrading from a Model 2100 to a Model 2200 enclosure 1 7 UPS support minimum battery life for clearing cache B 3 power requirement B 3 UPS planning B 3 V very hi...

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