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ICP GRD RD Series, Руководство пользователя

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71

9&KDQJH'ULYH1DPH

This command allows you to change the name of an Array Drive. The name serves to iden-
tify an Array Drive in GDTSETUP. This can be very helpful for configurations where several
Host Drives of various types are operated by a single controller.

9([SDQG$UUD\'ULYH

The 

Expand Array Drive

 option, which is also available online within GDTMON, includes two

functions:

1.

Migration

 of the RAID level of a given Array Drive

RAID 0 -> RAID 4 and vice versa
RAID 0 -> RAID 5 and vice versa

2.

Expansion 

of the capacity of a given Array Drive

To initiate a migration or expansion with a RAID 4/5 Array Drive, the state must be 

ready

.

The data on the Array Drive remain intact and are not affected by the expansion.
The additional capacity is introduced as new Host Drive (see next pages).
If a Logical Drive fails during the expansion, the expansion process continues until the ex-
pansion is finished. The Array Drive changes into the 

fail

 state.

In the following example the capacity of a given 400MB RAID 5 Array Drive is expanded.

Содержание GRD RD Series

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Страница 11: ...11 KDSWHU 8 8V VL LQ QJ J 2 26 6 ...

Страница 12: ...mance GDTX000 ADD driver can the ICP Controller unfold its full capacity under OS 2 We therefore recommend this operating mode In order to be able to use the GDTX000 ADD from the very beginning of the installation it has to be copied to the OS 2 diskette 1 We recommend the following procedure 6WHS With MS DOS using DISKCOPY for example create a copy of the OS 2 diskette 1 6WHS Copy GDTX000 ADD usi...

Страница 13: ... two ends of the SCSI bus only QVWDOODWLRQ ZLWK 26 6 6 0 6WHS Click the OS 2 System icon on the OS 2 Presentation Manager Then select System Setup and then Selective Install 6WHS Confirm the system configuration with OK 6WHS Now click CD ROM Device Support in the window opening and select the CD ROM drive Hereafter click OK 6WHS Click Install now and the installation begins The system will ask you...

Страница 14: ... DMD 60 Support SCSI devices default 60 G Support Host Drive d as SCSI device default if d is a cached CD ROM 60 G H Support SCSI device Bus d SCSI ID e as SCSI device default for all SCSI types except 0 DASD 0 Switch for supporting an ASPI Manager i e OS2ASPI DMD 0 Support SCSI devices OS2ASPI DMD 0 G Support Host Drive d as ASPI Device 0 G H Support SCSI device Bus d SCSI ID e as ASPI Device 126...

Страница 15: ...15 KDSWHU 8 8V VL LQ QJ J 6 6 2 2 8 81 1 ...

Страница 16: ...s and the SCO UNIX documentation you also need the GDT floppy disks GDT SCO UNIX BTLD Disks for 3 2v4 x 3 2v5 x for the installation In the following discussion when we speak of a boot drive we refer to the drive which is first integrated upon system power up For the ICP Controller this drive is the first Host Drive in the list of GDT Host Drives i e the Host Drive number 0 see GDTSETUP menu Confi...

Страница 17: ...ADM is started you will be asked for the coordinates of the device you wish to install The driver does not automatically display all devices connec ted so after the installation you will find a tool named GDTSCAN in the directory etc The scanning can take up to several seconds especially when there is more than one con troller in the system The devices are displayed together with their host adapte...

Страница 18: ...cond target ID 0 LUN 1 The formula for determining target ID and LUN from the existing Host Drive numbers yields the following possible combinations for Direct Access Devices RVW ULYH QXPEHU 7DUJHW 81 RVW ULYH QXPEHU 7DUJHW 81 0 0 0 8 1 0 1 0 1 9 1 1 2 0 2 10 1 2 3 0 3 11 1 3 4 0 4 12 1 4 5 0 5 13 1 5 6 0 6 14 1 6 7 0 7 15 1 7 This conversion is necessary because the single SCSI devices are not de...

Страница 19: ...tes i e their SCSI ID and SCSI LUN see Chapter B ICP Controller Function Check 6 6 RI 1RW LUHFW FFHVV HYLFHV 8VHG 7 6 6 FKDQQHO 81 7DUJHW 81 81 2 A 2 0 3 A 3 0 4 A 4 0 5 A 5 0 6 A 6 0 2 B 2 4 3 B 3 4 4 B 4 4 5 B 5 4 6 B 6 4 Having to determine the Target ID and LUN in such a complicated manner might seem rat her awkward However it is necessary to do so because the ICP Controllers have more than on...

Страница 20: ...er Therefore if there is only one ICP Controller installed in the PCI bus computer system the host adapter number 0 If there are two ICP Controllersinstalled the ICP Controller with the lower PCI Slot number is assigned host adapter number 0 and the ICP Controller with the higher PCI slot number is assigned host adapter 1 Note After a cold boot the GDT BIOS displays a couple of messages each begin...

Страница 21: ...se a separate ID LUN entry is necessary for each single media since the drive number depends on the media and not the device containing it SCO UNIX V 386 3 2v4 x and later versions support a maximum of 4 ICP Controllers in one computer system The tool GDTSYNC in the directory etc carries out a UNIX SYNC command update super block and causes all buffers still present in GDT s cache to be written to...

Страница 22: ...22 ...

Страница 23: ...23 KDSWHU 8 8V VL LQ QJ J Q QW WH HU UD DF FW WL LY YH H 8 81 1 ...

Страница 24: ...ing the driver disk and select the floppy disk type 720KB reading the floppy disk can take some time During installation a GDT driver cor responding to the IRQ used by the ICP Controller has to be selected As discussed in chap ter B of this user s manual the PCI System BIOS automatically assigns an IRQ to a PCI INT The IRQ used by a ICP Controller is displayed by the GDT BIOS after a cold boot Aft...

Страница 25: ...rnel containing the ICP Controller as boot controller see abo ve Then copy this kernel to the Interactive boot disk copy This can be easily done since this floppy disk contains a mountable file system You can then start the installation with this boot disk Make sure that the controller s IRQ is set according to the entry in kconfig b There is no bootable system available For Interactive UNIX 3 2v4...

Страница 26: ...of the single host drives can be changed very easily by having GDTSETUP sort them in its Configure Host Drives menu In this way it is also possible to change the boot drive it had previously been selected as boot drive because it has the lowest drive number that is 0 and is therefore the first drive to be communicated to the system There is one restriction that has to be observed with Interactive ...

Страница 27: ... Check 6 6 RI 1RW LUHFW FFHVV HYLFHV 8VHG 7 6 6 FKDQQHO 81 7DUJHW 81 81 2 A 2 0 3 A 3 0 4 A 4 0 5 A 5 0 6 A 6 0 2 B 2 4 3 B 3 4 4 B 4 4 5 B 5 4 6 B 6 4 Having to determine the Target ID and LUN in such a complicated manner might seem rat her awkward However it is necessary to do so because the ICP Controllers have more than one SCSI channel whereas UNIX can only manage host adapters with one SCSI ...

Страница 28: ...dev rgdth the required special device file is ge nerated A media change can be made with UNIX commands MOUNT and UNMOUNT Please make sure that the removable hard disk keeps its GDTSETUP drive number when changing the media otherwise a separate ID LUN entry is necessary for each single media since the drive number depends on the media and not the device containing it If you change the hardware conf...

Страница 29: ...29 KDSWHU 9 8 8V VL LQ QJ J 8 81 1 5 5 ...

Страница 30: ...onfi gure Host Drives During the installation you will have to decide whether you want the ICP Controller to make the boot drive available or whether you want to operate the ICP Con troller as an additional controller in the computer system If the ICP Controller is the only hard disk controller in the computer system it will automatically make the boot drive avai lable If there are more hard disk ...

Страница 31: ...the ICP Controller Therefore if there is only one ICP Controller installed in the PCI bus computer system the host adapter number 0 If there are two ICP Controllers instal led the ICP Controller with the lower PCI Slot number is assigned host adapter number 0 and the ICP Controller with the higher PCI slot number is assigned host adapter 1 Note After a cold boot the GDT BIOS displays a couple of m...

Страница 32: ...umber t0 Target ID 0 d0 LUN 0 s0 UnixWare partition All new SCSI devices will be automatically recognized and a corresponding special device file will be generated Host Drives must be partitioned and a file system file system s must be created You can do this with diskadd cCbBtTdD When using Direct Access Devices with exchangeable media e g removable hard disks that are not reserved for the raw se...

Страница 33: ...33 KDSWHU 9 7 76 6 7 78 83 3 L LQ Q H HW WD DLO LO ...

Страница 34: ...IX Interactive UNIX Novell NetWare etc Special RAID drivers are not needed The integration of a RAID Array Drive into the host operating system is carried out with the same drivers used for the inte gration of a single SCSI hard disk All ICP Controllers are equipped with a hardware which is particularly well suited for Array Drives RAIDYNE uses this hardware with extreme effi ciency and therefore ...

Страница 35: ...is then assigned a Host Drive number which is identical to its Logical Drive or Array Drive number The firmware is capable of running several Host Drives of the most various kinds at the sa me time An example for MS DOS drive C is a RAID 5 type Host Drive consisting of 5 hard disks drive D is a single hard disk and drive E is a CD ROM communicating with RAIDYNE through corelSCSI and the GDT ASPI m...

Страница 36: ...ces other than SCSI hard disks or removable hard disks or devices that do not behave like them are called Not Direct Access Devices They are not configured with GDTSETUP and cannot form Host Drives These SCSI devices are either run through the ASPI interface Advanced SCSI Programming Interface MS DOS Windows Novell Net Ware or OS 2 or they are directly accessed from the operating system true for U...

Страница 37: ... GDTSETUP 9 6SHFLDO H V LQ 76 783 XUVRU NH V n DQG p Used to select a menu option or command 17 5 NH Confirms a choice entry warning or message in GDTSETUP 6 NH Exits the current menu 63 EDU Multiple selections or toggling between a number of preset options XQFWLRQ NH This key has different functions depending on the menu you are in a Toggle between Express or Enhanced Setup b Display drive config...

Страница 38: ...r selecting Configure Host Drives and Create new Host Drive GDTSETUP scans the system for ICP Controllers and free hard disks i e drives which are not yet logical drives or Host Drives or part of Array Drives ...

Страница 39: ...integrate into the new Host Drive Depending on the number of selected drives in the Choose Type windows all possible Host Drive configurations are high lighted Press ENTER You may select the desired Host Drive type In our example select RAID5 and press ENTER ...

Страница 40: ...u can see from the next picture the RAID5 Array Drive has been fully automatically configured It is in the build state Press several times F2 to get detailed information on the Array Drive s configuration and components ...

Страница 41: ...ave GDTSETUP A new screen comes up giving you detailed progress information on the build process As you can see there are already 6 of the build process completed If you press ESC GDTSETUP warns you that the array is not yet redundant ...

Страница 42: ...re are more GDT RD Series controllers in the PCI computer Select Controller lets you select the controller where you can apply all of the following GDTSETUP choices to The currently selected controller is displayed on the lower left side of the screen Below Positi on the PCI Slot number is displayed The available features of the ICP Controller depend ...

Страница 43: ... cold boot of the PCI computer the controllers are reco gnized and initialized in the order of this list 9 RQILJXUH RQWUROOHU After pressing ENTER and F2 the Advanced Setup allows to select the Configure Controller menu option Press ENTER ...

Страница 44: ...ve the cursor keys n and p to the field and press ENTER Note In order to obtain the full performance of your ICP Controller it is very important that the Delayed Write function is 2Q too If you find a different setting we recommend changing it now ...

Страница 45: ...sion stepping The latest ver sion of the this file can be downloaded either from our 24h BBS 49 0 7131 5972 15 or from our Website http www icp vortex com We recommend that you also download the packed files which contain the latest programs drivers for the operating system used on your system Observe the following order when carrying out the updating procedure 1 Get the latest GDT_RPFW file for t...

Страница 46: ...sages and instructions of GDTSETUP It is extremely important that the system is not switched off or reset during the update process It is very likely that this would cause the ICP Controller to become inoperable The new versions of the GDT Firmware the BIOS and GDTSETUP are available after the next cold boot ...

Страница 47: ...rd disks and removable hard disks for use with the ICP Controller hierarchy level 1 You can scan the SCSI bus and the FCAL port s again for a given ID this may become necessary when another device is being connected during the operating session This screen tells you ...

Страница 48: ...d You may select the high lighted menu options The other options are either not appropria te to the type of device removable hard disk or currently blocked because of security reasons e g the drive belongs to an Array Drive 9 6 6 3DUDPHWHU QLWLDOL H This option can destroy all data on the hard disk If a hard disk is not yet initialized you have to initialize it first GDTSETUP copies ICP spe cific ...

Страница 49: ...us transfer Each SCSI device must be able to perform the first type of transfer the second one is op tional The advantage of the synchronous transfer consists in a higher data transfer rate since the signal transfer times on the possibly long SCSI cable have no influence on the transfer rate anymore Two SCSI bus participants which want to exchange data between ...

Страница 50: ... 8 LUNs each All these participants ought to be able to use the bus in a manner that causes the least reciprocal disturbance or obstruction A participant should therefore vacate the bus if he does not need it For reasons of performance it is particularly important to guarantee a high degree of action overlapping on the SCSI bus This high degree of overlapping becomes possible when a SCSI device is...

Страница 51: ...urface tested For new hard disks it is neither necessary nor advisable to perform the Format Disk This procedure is only indicated if you have doubts on the hard disk s condition The time required for the Format Disk of a hard disk depends on the hard disk itself It can take quite a long time up to days Often it seems that nothing happens and that the sy stem hangs no LED indication If you put you...

Страница 52: ... the checking of the surfaces of the hard disk media The GDT RD Series Controller writes and reads certain data patterns and checks them for correctness After confirming the security request a progress information is displayed You can interrupt the Check Surface option by pressing ESC ...

Страница 53: ...mber of media defects the selected hard disk has Grown defects Number of media defects that have occurred in addition to the media de fects the hard disk already had upon delivery Primary defects Number of media defects that the hard disk already had upon delivery ...

Страница 54: ...s sense key may also be returned if the target is unable to distinguish between a flaw in the medium and a specific hardware failure sense key 4h K HARDWARE ERROR Indicates that the target detected a non recoverable hardware failure for example controller failure device failure parity error etc while performing the command or during a self test K ILLEGAL REQUEST Indicates that there was an illegal...

Страница 55: ...the source data did not match the data read from the medium K RESERVED 9 HLQLWLDOL H LVN This menu option allows you to de initialize a hard disk which has previously been initiali zed for use with the ICP Controller By doing so the specific GDT information present on the device is removed Obviously the de initialization cannot restore data that was lost during initialization 9 RFN 8QORFN LVN This...

Страница 56: ...56 The next page shows a block diagram of a SAF TE subsystem ...

Страница 57: ...57 ...

Страница 58: ...an either configure the SAF TE Slots i e the drive bays in the subsystem or view the enclosure s status With the SPACE bar you can assign hard disks to a SAF TE slot Once you have finished the assignment press ENTER to save the new configuration ...

Страница 59: ...which are marked with Not available are not implemented in the subsystem SEP 9 RQILJXUH RJLFDO ULYHV Logical Drives hierarchy level 2 are installed in this main menu option Selecting Configure Logical Drives leads you to the screen shown next As you can see there is already one Logical Drive in the list The drive s name has been assigned automatically and ...

Страница 60: ...having selected a Logical Drive you can carry out various operations Change Drive Name Here you can enter a name for the selected drive Remove Drive This menu option lets you remove a single Logical Drive from the list of available Logical Drives Note Logical Drives belonging to a RAID 0 1 4 5 or 10 Host Drive cannot be removed To do so the corresponding Host Drive has to be removed first ...

Страница 61: ...sts of If it is a Lo gical Drive of the type Disk it only consists of one single hard disk If a Logical Drive con sists of more hard disks it is of the type Chain concatenation of several hard disks 9 QVWDOOLQJ D RJLFDO ULYH RI WKH 7 SH LVN Mark the selected hard disk with the SPACE bar pressing the SPACE bar again un does your choice and confirm your choice with ENTER ...

Страница 62: ... get appropriate spare hard disks in the future It would be bad luck if the new hard disk would have 8530MB only It simply wouldn t fit into the Array Drive If you limit the capacity to e g 8500MB from the beginning you can be sure that all future 9GB hard disk will have at least 8500MB and thus can be used as spare hard disk After pressing ENTER the list appears again but with a new entry The F2 ...

Страница 63: ...tten to this Logical Drive the first hard disk is filled first then the second and so on Although it is not advisable Logical Drives of the type Chain can also be components of Array Drives Select the hard disks with the SPACE bar and then confirm with ENTER A security request appears If you confirm with Y GDTSETUP allows you to limit the size of the Logical Drive This becomes interesting when you...

Страница 64: ...shows the hard disk forming the new Logical Drive 9 RQILJXUH UUD ULYHV This main menu option allows you to configure Array Drives level of hierarchy 3 Array Drives with the following listed RAID levels can be configured within this menu RAID 0 pure data striping without redundancy ...

Страница 65: ... 0 combined with RAID 1 The ICP Controller can manage up to 35 Array Drives with different RAID levels simulta neously Obviously the physically existing number of hard disks will limit the number of parallel used Arrays After pressing ENTER GDTSETUP lists all free Logical Drives which are free not yet part of Array Host Drives ...

Страница 66: ...ng array this is the Logical Drive which contains the valid data and which should be copied to the second Logical Drive After pressing ENTER GDTSETUP displays a list of possible RAID levels The number of previously selected Logi cal Drives determines the high lighted levels In our case RAID 10 is not selectable since it requires at least 4 Logical Drives For this example we select RAID 5 and press...

Страница 67: ...is 32KB which we leave for this example and therefore press ENTER Note 32KB stripe size is suggested be cause in various performance tests it has proved to be the best value This security request has to be taken seriously If you confirm with Y all data are lost If necessary you can limit the Array Drive s capacity For this example we take the complete capacity ...

Страница 68: ...ed the build state i e the parity information is currently genera ted After completion of the build process the Array Drive s state is ready i e fault tolerant If you select the new Array Drive you are offered various menu option ...

Страница 69: ...undancy TWR Set apart the time needed to set up the Array Drive state build the time without redundancy should be kept as short as possible Let us assume that one of the hard disks of a RAID 5 Array Drive fails The Array Drive is without redundancy TWR starts to run Any superfluous prolongation of the TWR because you have to get a replacement hard disk or because you did not realize the failure im...

Страница 70: ...tomatically replace the defective drive and start the recon struction of the data and the redundancy information Under these circumstances the fail state is only temporary and will be eliminated by the controller itself Rebuild state The Array Drive will assume this state after the automatic activation of a Hot Fix drive or after a manual replacement carried out with GDTSETUP The data and the red ...

Страница 71: ...a given Array Drive RAID 0 RAID 4 and vice versa RAID 0 RAID 5 and vice versa 2 Expansion of the capacity of a given Array Drive To initiate a migration or expansion with a RAID 4 5 Array Drive the state must be ready The data on the Array Drive remain intact and are not affected by the expansion The additional capacity is introduced as new Host Drive see next pages If a Logical Drive fails during...

Страница 72: ...l Drives which are free and can be added to the exi sting Array Drive Here we select the first Logical Drive We could have also added the first and the second Logical Drive to expand the Array Drive s capacity in one step from 400MB to 800MB ...

Страница 73: ...73 After the acknowledgement of the security request the expansion process starts After completion of this process the new capacity is displayed It is added as another Host Drive see next pages ...

Страница 74: ... state Another failure would cause data loss Unfortunately you find another Logical Drive which is shortly before failing e g you hear a strange noise from it or it s grown defect counter explodes If you now initiate a hot plug it is very likely that this critical Logical Drive will also fail This would result in a disaster To avoid that problem you can mirror in a first step a new good Logical Dr...

Страница 75: ...this example the Array Drive is ready Here you can select the RAID 1 Master This is the Logical Drive which data are mirrored to the new Logical Drive Logical Drive No 4 is added as a RAID 1 component to No 1 ...

Страница 76: ... cost 9 5HSODFH UUD RPSRQHQW If a Logical Drive of an Array Drive without a Hot Fix drive should fail or is very likely to fail soon you should replace the defective hard disk with a new one as soon as possible because the Array Drive is without redundancy The replacement Logical Drive has to have at least the same capacity as the failed one The replacement is carried out either interacti vely wit...

Страница 77: ...disk as a new Logical Drive you can add it to the Array Drive After selecting the Logical Drive which needs to be exchanged GDTSETUP offers a list of existing Logical Drives which can be used as replacement units The Array Drive s state is changing into rebuild and the missing data is automatically recon structed on the new Logical Drive ...

Страница 78: ...SRQHQW This option corresponds with the Add RAID 1 Component option It allows you to remove a previously configured RAID 1 combination Press F2 to get details As you can see all Logical Drives have the type Disk again ...

Страница 79: ...Drive is a spare drive within the so called Hot Fix Pool A drive in a Hot Fix Pool is available for several Array Drives as a Hot Fix drive Thus several Array Drives can share one Hot Fix drive Of course once this drive has been used by one of the Array Drives it is no longer available for the others A Private Hot Fix drive is dedicated to one RAID 1 RAID 4 RAID 5 or RAID 10 Array Drive Only drive...

Страница 80: ...o waste va luable storage capacity it is strongly recommended that all Logical Drives forming an Array Drive have the same storage capacity Example of an Array Drive configuration with a Hot Fix drive press the F2 key to display the following screen The Array Drive configuration sheet shows the active Array Drive members including the Private Hot Fix drive ...

Страница 81: ... redundancy Notes In some literature Hot Fix drives are also called Hot Spare drives You can add or remove Hot Fix drives also with the GDTMON utility program see Chapter K 9 5HPRYH RW L ULYH This option allows you to remove a Hot Fix Drive from an existing Array Drive Naturally the Hot Fix drive must not be used up so far 9 RW L 3RRO FFHVV By selecting the Hot Fix Pool Access option the access of...

Страница 82: ...a given Array Drive is defective this function may be used to recalculate it anew 9 XLOG 5HEXLOG 3URJUHVV Whenever an Array Drive is in the build or rebuild state you can select this option to get progress information and estimates for the required time ...

Страница 83: ...ou can see from the following screen there are two Host Drives in the list which be long to the same physical Array Drive Host Drive 6 2 of 2 is the result of a previous capa city expansion If you expanded the capacity of the Array Drive a second time there would be three Host Drives in that list belonging to one and the same Array Drive Since there is currently no operating system which supports ...

Страница 84: ...84 After selection of a Host Drive press ENTER 9 KDQJH ULYH 1DPH This command allows you to change the name of a Host Drive The name serves to identify a Host Drive with GDTSETUP ...

Страница 85: ...e Host Drive from which the operating system is boo ted and the position of the Host Drive from which GDTSETUP disk version was started both can be the same cannot be changed If you wish to change the position of these drives you have to boot the operating system and GDTSETUP from a floppy disk or use the GDTSETUP version loadable from the Flash RAM of the controller To change the position of a Ho...

Страница 86: ...e is a serious action All data will be lost after removal If you want to remove a Host Drive belonging to an Array Drive for which several Host Drives exist after capacity expansion or after splitting all other Host Drives will also be removed ...

Страница 87: ...n existing Host Drive into two or several Host Drives Each Host Drives looks to the operating system just like a single hard disk Since the new Host Drives have smaller capacities GDTSETUP has to write new header in formation on the two Host Drives All data will be lost ...

Страница 88: ...lit Host Drive option Only such Host Drives can be merged which belong to the same Array Drive or Logical Drive Since the new Host Drives has a lar ger capacity GDTSETUP has to write a new header information on the new Host Drives All data will be lost ...

Страница 89: ...come necessary to reboot the system first The partitioning menu has similar functions as the MS DOS program FDISK You can create and delete a partition and also change the active partition MS DOS can only be booted from an active partition Just like FDISK GDTSETUP can handle primary partitions exten ded partitions and logical drives within the extended partitions ...

Страница 90: ...controller controller settings Physical Drives Logical Drives Array Drives Host Drives etc in an ASCII file You can choose the filename and path This file is very helpful for deeper support and is also a good basis for system documentation 9 HDYLQJ 76 783 Always end GDTSETUP by leaving the program in the regular way do not warm boot with CTRL ALT DEL or cold boot by pressing the RESET button Certa...

Страница 91: ...91 ...

Страница 92: ...92 ...

Страница 93: ...HPV 7 RPPDQG OLQH VZLWFKHV 7 ULYHU IRU 26 URZQ HIHFW LVW LHUDUFK HYHO 3K VLFDO HYLFHV LHUDUFK HYHO RJLFDO ULYHV LHUDUFK HYHO UUD ULYHV LHUDUFK HYHO RVW ULYHV RVW ULYH 7 SHV LQ 5 1 RVW ULYHV NFRQILJ QWHUDFWLYH 81 PNGHY 6 2 81 Y 1RW LUHFW FFHVV HYLFHV 26 63 0 26 63 0 26 26 6 6 0 26 6 6 0 26 3ULPDU HIHFW LVW 5HSODFH ULYH ZLWK 76 783 6 2 81 76 1 6WULSH 6L H 6ZDS RVW ULYHV V VDGP QWHUDFWLYH 81 8QL DUH ...

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