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ArrayMasStor K Series

ÒInstallation Instructions and Procedures.Ó

Copyright 

Ó

 Advanced Technology and Systems Co., Ltd., 11/2001 Rev. A

14

Trademarks and Trade names that may appear within this document are the property of their respective owners.

RAID 5 offers increased data transfer rates when data is accessed in large chunks (i.e., sequentially)
and reduced data access time for many simultaneous I/OÕs when they do not span more than one
drive.

Spare drives in RAID configurations

  RAID implementations include one other basic concept that can be introduced at this point: spare
drives.  RAID levels 3 and 5 allow users to assign a drive as a ÒspareÓ.  Spare drives are fully
functioning, ÒON and readyÓ, disk drives that a RAID controller will use to replace a failed drive as
soon as the failure is detected.  The purpose of this, obviously, is to enhance the existing fault-
tolerant capabilities (and High Availability intent) of a RAID data storage system.  Implementing
and assigning a spare drive is discussed later in this manual.

  The K-Series RAID system permits you to assign a hot-spare drive that will be used in the event of
a drive failure.  When a drive has been installed and configured in the array as a spare, any drive
failure will cause an automatic rebuild of the array without data loss or any need for user
management (for RAID levels 3 and 5 only).  Spare drives are indicated by a cross (+) on the LCD
display panel.

RAID Rebuilding

  If your array has a drive failure without an installed spare, it will be necessary for you to remove
the failed drive and install a good replacement as soon as possible.

  Once you have replaced the failed drive, the array will automatically rebuild data onto the new
drive without data loss (for RAID 1, 3, and 5 only).  The percentage of rebuild completion will be
displayed on the LCD display panel.

  After the rebuild is complete, the RAID system will return to normal operation and will again be
capable of sustaining a drive failure without a loss of function or data (for RAID 1, 3, and 5 only).

Ready         

×

RAID5   

+

Содержание ArrayMasStor AXRRK10006S-F

Страница 1: ...Ó 2001 Advanced Technology and Systems Co Ltd 13715 Alton Parkway Irvine CA 92618 Tel 949 583 2993 ArrayMasStor ÒKÓ Series Installation Manual and Users Guide ...

Страница 2: ...ver 5 HOST SCSI REQUIREMENTS 5 Operating the RAID system 5 Front panel status indicators LEDs 7 Front ÒFresh airÓ intakes 8 Rack mounting the RAID unit 8 Identifying rear panel components 9 Product Components 10 RAID CONTROLLER 10 IDE DRIVE BAYS AND DRIVE TRAY ASSEMBLIES 10 POWER SUPPLIES 10 FANS 10 ENCLOSURE 10 RAID Overview 11 Non RAID Storage 11 About RAID levels 12 RAID 0 12 RAID 1 12 RAID 1 0...

Страница 3: ...20 Using the RAID Controller Functions 21 BASIC FEATURES 21 Front Panel Ready Mode 21 Front Panel Configuration Options 22 Auto RAID Setup 23 ADVANCED FUNCTIONS 23 Selecting RAID Levels 25 Adding Drives to the RAID system 25 Troubleshooting 26 CONTROLLER 26 Problems at Startup 26 Other Problems 26 ENCLOSURE 26 Power Supplies 26 Fans 27 Drive Trays 28 LEDs 28 Ports 28 Replacement Parts 28 Drives 28...

Страница 4: ...g write operations Hot swapping of the drives is supported through automatic disconnection of a failed drive and the automatic detection of a spare ÒreservedÓ drive If a drive fails the system supports the automatic rebuilding of data in the background allowing host operations to continue Amazingly failure recovery operations are completely transparent to the host system The K Series system is so ...

Страница 5: ...onto these supporting rails Note that the mounting rails are of the ÒshelfÓ type and do not screw to the sides of the RAID system Finally secure the RAID system to the rack cabinet using the brackets on the front of the RAID system see figure 2 1 Make sure that both the RAID system and the host computer are powered OFF 2 Next make sure that the RAID systemÕs power switch is in the OFF position see...

Страница 6: ...h an external SCSI LVD terminator If the RAID system is the last or only external SCSI device on the bus it must have this terminator attached to one of the SCSI connectors on the back of the RAID system In other words one of the two 2 SCSI connectors on the back of the RAID system will have the terminator attached and the other connector will have a SCSI cable attached to it connecting to the hos...

Страница 7: ... bus Typically a host bus adapter HBA is installed inside of the host as an add on card that provides SCSI port s for connecting to external SCSI device s Operating the RAID system Once the RAID system is installed properly and connected to a host computer it generally appears and functions as a large single disk drive from a hostÕs point of view After successful installation there are primarily t...

Страница 8: ...lection and their appropriateness for particular applications see the section ÒAbout RAID levelsÓ in this manual In general RAID systems are not intended to be regularly powered down The most common practice for powering down a RAID system is to always power the host s down first By the time the host is completely powered down the RAID systemÕs controller will have had time to finish clearing its ...

Страница 9: ...s replacing a failed fan Along with their display functions the fans that these panels contain provide cooling for the bank of three 3 drives to their left If they are removed while the RAID system is powered ON the drives could overheat See figure 4 for a diagram of the display fan panels and brief descriptions of their status indicators 1 2 Figure 3 Front panel status indicator panels LEDs Remov...

Страница 10: ...r ÒlabelsÓ in these two areas on the front panel Rack mounting the RAID unit The RAID unit is supplied with adjustable rails shelf type that attach to the inside of the intended rack cabinet Once installed inside the rack cabinet the K Series system slides onto them and secures to the front of the rack through holes in the front of the RAID unit Unlike other rail types the supplied rails do not at...

Страница 11: ...tem alarm Main cooling fan Serves as the primary hot air exhaust for the unit RS 232C port Used to communicate with the unit via an ASCI terminal Also used as the SNMP message port This SNMP can be connected to a terminal server or other interface for remotely monitoring the unit Selection buttons for use with the Display panel above them These allow selections to be made from the status and confi...

Страница 12: ...he bays and drive assemblies in the product are designed for contemporary 3 5Ó x 1Ó EIDE disk drives Power Supplies The system comes with two 2 redundant hot swappable power supplies Each power supply provides power to the RAID system simultaneously and each is capable of supplying the required power to the RAID system alone if necessary Note that prolonged single power supply operation is not rec...

Страница 13: ...K Series RAID system has been designed to tolerate a single fault in any major component except the controller itself One of any or even one of ÒeachÓ in a worst case scenario redundant component can fail and the data on the system will still be maintained and available These redundant components include the drives fans and power supplies within the system Non RAID Storage One common option for ex...

Страница 14: ...failure data is lost and or generally made inaccessible In block striping the total disk capacity is equivalent to the sum of the capacities of all the drives in the array This combination of drives appears to the system as a single logical Òor virtualÓ drive RAID 0 provides the highest performance but offers no data redundancy or drive failure protection It is typically faster than the other RAID...

Страница 15: ...orm RAID 1 or RAID 0 1 This will depend upon the number of drives selected for the logical drive RAID 3 RAID 3 implements block striping with dedicated parity This RAID level separates data into logical blocks the size of a disk block and then stripes these blocks across several drives One drive is dedicated to parity If a disk fails the original data can be reconstructed from the parity informati...

Страница 16: ...nt of a RAID data storage system Implementing and assigning a spare drive is discussed later in this manual The K Series RAID system permits you to assign a hot spare drive that will be used in the event of a drive failure When a drive has been installed and configured in the array as a spare any drive failure will cause an automatic rebuild of the array without data loss or any need for user mana...

Страница 17: ...n pull the drive partially forward to disengage its power connection Wait for the drive to spin down completely approx 30 seconds Once the drive has spun down you can remove it carefully To remove a drive from the system pull the Òlatch leverÓ forward on the front of the drive that you wish to extract see figure 9 Be sure to swing the latch handle until it is fully extended perpendicular to the fr...

Страница 18: ...pear within this document are the property of their respective owners WARNING Be sure that the drive is replaced into the same slot or bay that it came from Mixing up drive positions can result in permanent data loss To remove a ÒFailedÓ drive from the system with or without power applied refer to the section titled ÒRemoving a Failed driveÓ Figure 9 Removing a drive tray ...

Страница 19: ...s lights LEDs The LEDs are both green when the power supply is operating properly and turns amber or extinguishes completely if the power supply has failed To remove a power supply from the system push down on the ÒlatchÓ on the top of the power supply that you wish to extract see figure 10 Continue pressing down on the ÒlatchÓ while pulling on the power supplyÕs handle Then carefully pull the pow...

Страница 20: ...system carefully slide the power supply into the unit until the locking latch ÒsnapsÓ the power supply into position The power supply fits snuggly and can require a firm push at the end of its travel to engage the securing latch To replace a ÒFailedÓ power supply in the system with power applied refer to the section titled ÒRemoving a Failed power supplyÓ Figure 10 Removing a Power Supply Press do...

Страница 21: ...on in the Message Display For some selections pressing this button takes you one step deeper into the menu choices _ Use the Òdown arrowÓ button to decrease ÒvalueÓ selections in the display such as a SCSI ID number It is often used to move down through a ÒlistÓ of menu options This button is also used in conjunction with the Òup arrowÓ button to ÒtoggleÓ between two settings such as ÒYESÓ or ÒNOÓ...

Страница 22: ... access buses or channels to the RAID system When NOT chaining with other SCSI devices an LVD terminator must be placed on one of the connectors These connectors are pass through connections and are wired in parallel internally RS232C Ð Use this connector to connect the RAID system to an external ASCII terminal or terminal server When used with an ASCII terminal all of the RAID systemÕs options ar...

Страница 23: ...what RAID level the array is currently operating at and shows the status of each drive bay Default display Event 00 Ð if there is a currently pending serious error event the error event log entry will be listed immediately after the Ready screen Note that if no errors are pending the display immediately after Ready will be the cache status below Data in Cache Ð displays how much of the cache is cu...

Страница 24: ... on Board Temperature Ð a constant real time measurement of the controller temperature The first number is the current board temperature the second number is the peak temperature since the unit was last powered on Backplane ID Ð describes the type of backplane installed in the subsystem Useful when contacting tech support for troubleshooting Bootrecord Version Ð provides important information for ...

Страница 25: ...to re type the password to confirm and will receive an error message if the two passwords do not match Otherwise you will see a confirmation that the password was successfully changed If later you want to modify the password it will be necessary for you to enter the old password in order to set a new one View Event Log Ð if you would like to view the contents of the current event log press the ENT...

Страница 26: ...ÒNOÓ If you select ÒYESÓ you will see the following message If you have changed the SCSI ID the new ID will not be used until the next time the unit is powered OFF and then back ON If you have not selected or confirmed a new SCSI ID and you wish to abort the SCSI ID selection menus simply press ÒEXITÓ Menu RAID Setup Ð this menu allows users to control the parameters of the RAID setup including th...

Страница 27: ...ng ENTER Step 6 Confirm the selection by pressing the Down button once to display YES and then press ENTER When the initialization is complete the LCD will display the Ready screen and you may now connect a host and use your RAID array Adding Drives to the RAID system RAID Expansion Ð if after adding a new drive you would like to make your RAID bigger select RAID expansion Note that you can also u...

Страница 28: ...he system is stuck power off wait 10 seconds and try again Attempt this remedy three times if the system still does not initialize check all other components for good connections and status as indicated by LEDs Other Problems The controller is the heart and brain of a RAID array If during normal operations the controller fails the most obvious symptoms will be that the LCD does not light and the a...

Страница 29: ...The terminal utility error readout for the power supplies is unable to display which power supply has failed Check the back of the power supplies themselves to determine which one has failed Once you have determined which power supply has failed to replace it turn the hand screw counter clockwise until the power supply is free raise the handle on the failed unit and gently pull the power supply ou...

Страница 30: ...n lit amber the power supply has failed Note that these are distinct from the power LEDs on each drive tray and on the main front panel Ports The ports on the K Series RAID system are not likely to fail even under the most strenuous circumstances It is much more likely that a cable has failed so the first thing to do if you suspect a port or cable failure is to replace the cable with one that is k...

Страница 31: ...e K Series RAID system has been designed to tolerate a single fault in any major component except the controller itself A drive fan and or power supply can fail and data will still be maintained and available RAID Level Support Important The K Series RAID system supports RAID 0 RAID 1 RAID 3 RAID 5 RAID 3 Spare and RAID 5 Spare RAID 1 Expansion Note One drawback to RAID 1 is that it does not allow...

Страница 32: ...Auto RAID Setup will erase all information currently stored on the disk drives installed in the array Contact Service Warning It is highly recommended that you contact your service representative before attempting any of the Download functions since failure to do them properly can result in serious damage to your RAID controller Failed Drive Removal Warning A failed drive will be indicated by a ÒX...

Страница 33: ...face can manage the array through the RS 232C port The portÕs transmission settings have the following preset values and cannot be modified Baud Rate 38400bps Parity No Bits 8 Stop Bits 1 In order to manage the array using the RS 232C port use a null modem port adapter not included and a serial cable not included connect the cable to the RS 232C port on the RAID system and to the appropriate COM p...

Страница 34: ...160 110 100 160 110 100 160 110 100 SCSI interface Ultra 160 LVD Dual 68 pin connectors pass through RS 232C interface One male DB 9 serial port 38400 n 8 1 for terminal connection Power supply rating each peak continuous 250 223W Input power requirements 2 total 100 240 VAC 47 63 Hz 6A peak 1 4A typ Operating temperature 5 to 40 C Relative Humidity 10 95 non condensing Altitude Sea level to 10 00...

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