CN205487332U - Rack -type large capacity optical disc storage unit module device - Google Patents

Abstract

The utility model provides a rack -type large capacity optical disc storage unit module device, including power module, controller, disk array, motor, guide rail, bearing structure, manipulator, CD pick -up head, CD cage, optical drive, optical drive bracket and CD removal passageway, the CD cage includes: disk magazine bracket, runing rest, support disc and cage axle. The CD pick -up head is installed on the manipulator, and the manipulator passes through bearing structure and connects the guide rail, the disk magazine bracket passes through the runing rest to be installed between the support disc, supports the disc and links to each other with the cage axle, the optical drive bracket is arranged in the optical drive. The utility model provides an intelligent optical disc storage device modularization / standardization level low, the device mobility is poor, service response speed is slow, space utilization hangs down problem. This module device be convenient for remove with the extension, can install in standard server rack, be one kind serve that response speed is fast, the security is high, good reliability, the low intelligent optical disc storage unit module device of power consumption.

Description

A kind of rack huge capacity compact discs memory element modular device

Technical field

This utility model belongs to intelligent CD field of storage, is specifically related to a kind of rack huge capacity compact discs memory element modular device.

Background technology

Gradually march toward digitized, informationalized big data age along with society, information storage means is carried by the data volume constantly expanded Go out the highest requirement.At present in internet data, statistics display there are about the access of 80% and all concentrates on the focus number of 20% According to, and the access of remaining cold data of 80% only account for that visit capacity is overall 20%.In addition to cold data, the most substantial amounts of from Line data.But for this part seldom access again must the data of safety storage, optical storage be bus unit volume capacity Greatly, the safest, carrying cost is minimum, consume energy minimum memory technology.

Current intelligent CD library storage device the most all uses the mode of blue-ray storage+disk array storage, can be by host computer control Mechanical hand in CD server processed is automatically performed CD and takes/put/operation such as read/write.There is memory capacity big (more than 500T), data peace Quan Xinggao (after data of optical disk one-time write, data are non-rewritable), storage medium replacement cycle length (the CD life-span is 50-100), The advantages such as device energy-wasting low (need not energy consumption when CD is not written and read).

The storage of current cold data/off-line data currently there is also a lot of problem:

First, in big data age, the speed that information data expands, the equipment volume for data storage is more and more huger. Substantial amounts of plant maintenance can consume more artificial, is also unfavorable for environmental conservation.

Second, data storage device is bulky, and the mobility of equipment is the poorest.

3rd, according to traditional disk array formula storage device, the power consumption of disk storage pattern is huge, equipment+caloric value is big, In the disk life-span short (3-5), Information Security is poor, and the storage for cold data/off-line data needs the cost consumed the highest.

4th, it is low that existing intelligent CD storage apparatus has power consumption, and caloric value is little, and the life-span is long, and safety is good, disposably Put into, the advantage such as later stage low cost.But existing intelligent CD storage apparatus mostly uses whole cabinet type design, CD-ROM drive quantity Do not mate with stored CD quantity, mechanical hand is slow in busy service response speed, modularity, standardization level are poor, system storage Capacity underaction and space availability ratio within CD server also has to be strengthened.

Utility model content

One of this utility model purpose is to provide a kind of Large Copacity, high density, standardized rack huge capacity compact discs storage list Element module device, low in order to solve existing disc library storage device degree of integration, storage expansion is poor, equipment mobility difference etc. is asked Topic.

This utility model provide a kind of rack huge capacity compact discs memory element modular device, including power module, controller, Disk array, motor, guide rail, supporting construction, mechanical hand, optical pickup head, CD cage, CD-ROM drive, CD-ROM drive bracket and CD Movable passageway；

Described CD cage includes: CD casket bracket, runing rest, support disk and cage axle；

Described controller connects described motor, optical pickup head and CD-ROM drive；Described controller controls described machinery by described motor The movement of hands and the rotation of CD cage；

Described disk array connects described CD-ROM drive；Described disk array is used for the buffering of data during disc read/write in described CD-ROM drive；

Described mechanical hand connects described guide rail by described supporting construction；Described guide rail is vertically mounted in described modular device；Institute State supporting construction and can do straight reciprocating motion along guide rail direction；

Described optical pickup head is arranged on described mechanical hand；

Each described CD-ROM drive connects a described CD-ROM drive bracket；Multiple described CD-ROM drive vertical stackings are placed.

Described cage axle upper and lower side is respectively equipped with described support disk, is fixedly connected with described cage axle between described two panels support disk, Described support disk can pivot about with described cage axle；Described runing rest is vertical cylinder stock, and described rotation is propped up Frame is arranged on described in two panels between support disk about the described cage axle form of being centrosymmetric；The every described CD casket bracket with layer Being all connected with a described runing rest, described CD casket bracket can pivot about with described runing rest；

Described power module, controller, disk array and motor are arranged on the upper end of described CD cage；

Further, described CD movable passageway is a cylindrical channel vertically, the motion of described optical pickup head Route is on described CD movable passageway, and the central axis of described optical pickup head is through the center of circle of described CD movable passageway；

When any a piece of described CD casket bracket in described CD cage is in open mode, if wherein depositing CD, then should CD is in described optical pickup head and is on described CD movable passageway；Open when the CD-ROM drive bracket in any described CD-ROM drive is in During state, if wherein there being CD, then this CD is also at described optical pickup head and is on described CD movable passageway.

Further, described modular device includes 2 described CD cages, is placed in parallel about described 2 CD cages；Described lead Rail and CD-ROM drive are between 2 described CD cages；

Being provided with 60～80 layers of CD casket between a support plate described in the two panels up and down of described CD cage, every layer of described CD casket includes 6 About described cage axle be centrosymmetric distribution described CD casket bracket；Bowing of 6 described CD casket brackets on every layer of CD casket Overlapping depending on projection, the described CD casket bracket that projected position is identical is connected on same described runing rest.

Further, described modular device profile size is the 7U server size of 900 × 482.6 × 311.5.

The beneficial effects of the utility model are:

(1) repertoire of Intelligent optic disc data base is integrated in the standard module of 1 a size of 7U server size by this utility model, One 42U standard server cabinet can install 6 modular devices, or the number according to actual demand increase and decrease optical disc storage modular device Amount, thus the capacity of flexible allocation optical disc storage/disk storage and space proportion so that optical disc storage possesses Space Expanding；

(2) this utility model uses disk storage as the data buffer zone of external data to CD, it is ensured that it is efficient that data are uploaded Property, each CD-ROM drive can carry out the data Coutinuous store between independent read/write operation, and CD simultaneously, it is ensured that needs to deposit across sheet The big file of storage can also store safely/shift/reads and writes, simultaneously also maximise CD utilization rate；

(3) associative operation of CD in modular device is only responsible for by mechanical hand of the present utility model, contrasts existing intelligent optical disc memory Put, mechanical hand of the present utility model owing to being no longer necessary to serve the CD that quantity is too much, the intelligent optical disc memory of same volume Put, the service response time of modular device want fast 50 more than %；

(4) this utility model reduces the volume of CD intelligent base standardization, modularity optical disc memory apparatus so that CD Storage device is no longer heavy, it is mobile to be difficult to, and enhances the mobility of optical disk storage apparatus；

(5) this utility model uses optical disc storage mode to store, relative to disk storage mode, the data safety of optical disc storage Property height, life-span length, power consumption few.It is applicable to important, to need long-term that preserve/back up, colder data storage.

Accompanying drawing explanation

Fig. 1 show this utility model rack huge capacity compact discs memory element modular device front view.

Fig. 2 show this utility model rack huge capacity compact discs memory element modular device top view.

Detailed description of the invention

This utility model is described in detail below in conjunction with specific embodiment.It should be noted that, the technology described in following embodiment The combination of feature or technical characteristic is not construed as isolating, and they can be mutually combined thus reach superior technique Effect.

As it is shown in figure 1, the rack huge capacity compact discs memory element modular device front view that this utility model provides, including power supply Module 001, controller 002, disk array 003, motor 004, guide rail 005, supporting construction 006, mechanical hand 007, light Dish pick-up head 008, CD cage 010, CD-ROM drive 012, CD-ROM drive bracket 013 and CD movable passageway 014.

CD cage 010 includes: CD casket bracket 009, runing rest 015, support disk 016 and cage axle 011.Every CD Casket bracket 009 can place a standard Blu-ray Disc.

Power module 001 is the whole energy needed for modular device offer, including controller 002, disk array 003, motor 004, optical pickup head 008 and CD-ROM drive 012.

Controller 002 connects motor 004, mechanical hand 007 and CD-ROM drive 012.The rotation of CD cage 010 and mechanical hand 007 Relevant action is controlled logic by controller 002, motor 004 perform concrete motor process.Control taken into account by controller 002 simultaneously The action of CD-ROM drive 012, the action of optical pickup head 008 and the real-time communication with host computer.

Motor 004 uses private clothes/motor, for providing kinetic energy for mechanical hand 007 and CD cage 010.

Disk array 003 connects CD-ROM drive 012.Disk array 003 uses big capacity hard disk, disc read/write in CD-ROM drive 012 Time data buffering.

Mechanical hand 007 connects guide rail 005 by supporting construction 006.The end of mechanical hand 007 and supporting construction 006 rigidity phase Even.Guide rail 005 is vertically mounted in modular device；Supporting construction 006 can do straight reciprocating motion along guide rail 005 direction.

Optical pickup head 008 is arranged on mechanical hand 007, is used for taking, putting CD.

CD-ROM drive bracket 013 connects CD-ROM drive 012.CD-ROM drive 012 is specialty blue light read-write CD-ROM drive 012, and comprising 1 in CD-ROM drive 012 can With the CD-ROM drive bracket 013 actively ejecting/packing up.Each modular device comprises multiple CD-ROM drive 012, is leaving enough heat-dissipating spaces On the basis of vertical stacking place, all CD-ROM drives 012 are used to the read/write of stored CD.

Cage axle 011 upper and lower side is respectively equipped with support disk 016, is fixedly connected with cage axle 011 between two panels support disk 016, Hold round dish 016 to pivot about with cage axle 011；Runing rest 015 is vertical rigid cylindrical stock, runing rest 015 is arranged between two panels support disk 016 about cage axle 011 form of being centrosymmetric；The every CD casket bracket 009 with layer Being all connected with a runing rest 015, CD casket bracket 009 can pivot about with runing rest 015.CD casket torr Frame 009 is arranged between support disk 016 by runing rest 015 stacking.

CD casket bracket 009 is piece of plastic workpiece, and the thickness of CD casket bracket 009 is less than 3.2mm.

Power module 001, controller 002, disk array 003 and motor 004 are arranged on the upper end of CD cage 010.

CD movable passageway 014 is a cylindrical channel vertically, and the horizontal cross-section of this cylindrical channel is picked up with CD The horizontal cross-section taking 008 is concentric circular.CD movable passageway 014 is the special mobile passage of stored CD in modular device. No matter mechanical hand 007 is in which kind of resting state or kinestate, and the centrage of optical pickup head 008 always passes perpendicularly through light The center of circle of dish movable passageway 014.

Further, when any a piece of CD casket bracket 009 in CD cage 010 is in open mode, if wherein deposited CD, then this CD is necessarily on the moving line of optical pickup head 008 (being i.e. on CD movable passageway 014)；When appointing When CD-ROM drive bracket 013 in meaning CD-ROM drive 012 is in open mode, if wherein there being CD, then this CD is necessarily in equally (i.e. it is on CD movable passageway 014) on the moving line of optical pickup head 008.

The modular device profile size that this utility model provides is 7U server size (900 × 482.6 × 311.5), can be installed on In standard server cabinet, each modular device can deposit up to 960 standard Blu-ray Discs, and modular device can be with host computer Being connected, each modular device can carry out independent operation.Contain in the middle of one modular device the function of whole Intelligent optic disc data base with Structure.The operation of the functions such as CD independently can be taken, put, shifts by modular device, reading and writing.Modular device is deposited simultaneously In optical disc storage and disk storage two ways, it is main storage mode with optical disc storage.

Specifically, needs carry out capacity extensions to Intelligent optic disc data base when, such as: current disc cabinet is mounted with 2 Modular device, totally 1920 CDs, memory capacity is 192T, needs for some reason to extend to not less than 500T by disc cabinet: each The heap(ed) capacity of modular device is 96T, and 6 modular device heap(ed) capacities are 576T, meets and expands requirement, therefore has only to same One disc cabinet is installed 4 modular devices again, it is not necessary to additionally purchase CD server；If need not the capacity of 576T, only Need suitably to reduce the quantity of the CD casket bracket 009 in CD cage 010.Thus flexible allocation optical disc storage/disk storage Capacity and space proportion so that optical disc storage possesses Space Expanding.

This utility model is capable of being controlled CD cage 010 with mechanical hand 007 interoperation to perform CD by controller 002 Take, put, transfer etc. operates.Such as being shifted between different CD casket brackets 009 by CD, this operation includes walking as follows Rapid:

Sa1: determined the start position of CD and final position by controller 002 and send driving signal, motor to motor 004 004 two the CD cages 010 controlled at start position and final position rotate, and will be located in the CD casket bracket of start position respectively 009 moves to the position waiting that hook takes with the CD casket bracket 009 being positioned at final position；

Sa2: mechanical hand 007 moves to the respective heights of the CD casket bracket 009 being positioned at start position along guide rail 005 and will hook pawl Move to the correspondence position of CD cage 010 at start position；

Sa3: the CD casket bracket 009 being positioned at start position rotates around runing rest 015, and cooperative mechanical hands 007 will be located in starting point The CD casket bracket 009 of position is ticked so that the CD casket bracket 009 being positioned at start position is in open mode, is now placed in CD in the CD casket bracket 009 of start position is on CD movable passageway 014；

Optical pickup head 008 on Sa4: mechanical hand 007 is by optical pickup to optical pickup head 008, and CD cage 010 rotates, Cooperative mechanical hands 007 will be located in the CD casket bracket 009 of start position and closes；

Sa5: mechanical hand 007 moves CD casket bracket 009 respective heights of position to terminal along guide rail 005 and hook pawl is moved to end The correspondence position of the CD cage 010 of some position；

Sa6: the CD casket bracket 009 at final position rotates around runing rest 015, and cooperative mechanical hands 007 will be located in terminal position The CD casket bracket 009 put is ticked so that the CD casket bracket 009 being positioned at final position is in open mode, is now placed in end The CD casket bracket 009 of some position is on CD movable passageway 014；

CD is put into the CD casket bracket 009 being positioned at final position, terminal by the optical pickup head 008 on Sa7: mechanical hand 007 The CD cage 010 of position rotates, and cooperative mechanical hands 007 will be located in the CD casket bracket 009 in final position and closes, this time Dish is the most successfully transferred to be positioned in the CD casket bracket 009 in final position；

Sa8: controller 002 sends signal makes mechanical hand 007 return start position, release.

This utility model can also realize the CD in CD casket bracket 009 is carried out read/write operation, comprises the steps:

Sb1: controller 002 determines start position and the final position of CD, and controls motor 004 and make the light at start position Dish cage 010 moves to fetch bit to be hooked and puts；

Sb2: controller 002 controls mechanical hand 007 and picks up the CD of pending read/write, and is moved by CD to being positioned at terminal position The top of the CD-ROM drive 012 put；

Sb3: the CD-ROM drive bracket 013 being positioned in the CD-ROM drive 012 in final position ejects, and controller 002 controls on mechanical hand 007 CD is positioned in CD-ROM drive bracket 013 by optical pickup head 008, and CD-ROM drive bracket 013 placing compact disc is closed after terminating, carry out reading/ Write operation.

Embodiment 1:

This utility model includes that 010,2 CD cages about 010 of 2 CD cages are placed in parallel.Guide rail 005 and CD-ROM drive 012 Between 2 CD cages 010.

The two panels of CD cage 010 is propped up and is provided with 60～80 layers of CD casket between support plate, and every layer of CD casket includes 6 about cage axle 011 Be centrosymmetric the CD casket bracket 009 being distributed；The downward projection of 6 CD casket brackets 009 on every layer of CD casket overlaps, The CD casket bracket 009 that projected position is identical is connected on same runing rest 015.

Specifically, this utility model includes: 1 power module, 002,1 disk array of 001,1 controller 003,3 005,1 supporting construction of 004,1 guide rail of motor, 007,1 optical pickup head 008,720～960 of 006,1 mechanical hand 009,2 CD cages of individual CD casket bracket, 011,4～6 CD-ROM drives 012 of 010,2 cage axles are the same number of with CD-ROM drive 012 014,12 runing rests 015 of CD movable passageway that 013,1, CD-ROM drive bracket is fixing and 4 support disk 016.Each portion The annexation of part is the most above-mentioned.

Embodiment 2:

CD can be shifted, such as between different CD casket brackets 009 by this utility model: by CD A from numbered In the left CD cage 010 of L1 the 4th layer, the CD casket bracket 009 of numbered 5 is transferred to the right CD cage of numbered L2 In 010 the 76th layer, in the CD casket bracket 009 of numbered 3, this operation comprises the steps:

Sa1: determined the start position L1-0405 and final position L2-7603 of CD by controller 002, and to 004, motor The CD cage 010 sending CD cage 010 and numbered L2 that driving signal, motor 004 control numbered L1 rotates, and respectively will CD casket bracket 009 and the numbering L2-XX03 CD casket bracket 009 of numbered L1-XX05 move to the position waiting that hook takes；

Sa2: mechanical hand 007 moves to being positioned at the respective heights of 04 layer of CD casket and hook pawl being moved to numbered L1 along guide rail 005 The correspondence position of CD cage 010；

The CD casket bracket 009 of Sa3: numbered L1-0405 rotates around runing rest 015, and cooperative mechanical hands 007 is by this CD Casket bracket 009 is ticked so that the CD casket bracket 009 of numbered L1-0405 is in open mode, the most numbered L1-0405 CD casket bracket 009 in CD A be on CD movable passageway 014；

CD A is picked up to optical pickup head 008 by the optical pickup head 008 on Sa4: mechanical hand 007, numbered L1-0405 CD casket bracket 009 rotate around runing rest 015, this CD casket bracket 009 cuts out by cooperative mechanical hands 007；

Sa5: mechanical hand 007 moves to the CD casket respective heights of 76 layers along guide rail 005 and moves to the light of numbered L2 by hooking pawl Dish cage 010 correspondence position；

The CD casket bracket 009 of Sa6: numbered L2-7603 rotates around runing rest 015, and cooperative mechanical hands 007 is by this CD Casket bracket 009 is ticked so that the CD casket bracket 009 of numbered L2-7603 is in open mode, the most numbered L2-7603 CD casket bracket 009 be on CD movable passageway 014；

CD A is put into the CD casket bracket 009 of numbered L2-7603 by the optical pickup head 008 on Sa7: mechanical hand 007, This CD casket bracket 009 rotates around runing rest 015, and cooperative mechanical hands 007 is by the CD casket bracket 009 of numbered L2-7603 Closing, now CD A CD casket bracket 009 from numbered L1-0405 is successfully transferred to the light of numbered L2-7603 In dish casket bracket 009；

Sa8: controller 002 sends signal makes mechanical hand 007 return start position, release.

Embodiment 3:

This utility model can carry out read/write operation to the CD in CD casket bracket 009, and by the CD after read/write operation Put in CD casket bracket 009, such as: to the 23rd layer in the right CD cage 010 of numbered L2, the CD of numbered 2 The CD B1 deposited in casket bracket 009 carries out imprinting, the CD-ROM drive 012 of numbered G2 perform imprinting action, the most numbered CD B2 in the CD-ROM drive 012 of G1 has read complete, needs to put back to CD B2 in the left CD cage 010 of numbered L1 The 44th layer, in the CD casket bracket 009 of numbered 1, this operation comprises the steps:

Sb1: controller 002 determines the Origin And Destination position of CD, and controls motor 004 and make the CD cage of numbered L1 010 with the CD cage 010 of numbered L2 respectively the CD casket bracket 009 of numbered L1-XX01 Yu L2-XX02 is moved to Fetch bit to be hooked is put；

Sb2: controller 002 controls mechanical hand 007 and picks up the CD B1 in the CD casket bracket 009 of numbered L2-2302, And CD B1 is moved above the CD-ROM drive 012 of numbered G2；

GT2 CD-ROM drive bracket 013 in the CD-ROM drive 012 of Sb3: numbered G2 ejects, and controller 002 controls mechanical hand 007 On optical pickup head 008 CD B1 is positioned in the CD-ROM drive bracket 013 of numbered GT2, this CD-ROM drive bracket 013 is placed Closing after CD B1 release, carry out imprinting operation, now mechanical hand 007 moves above the CD-ROM drive 012 of numbered G1；

GT1 CD-ROM drive bracket 013 in the CD-ROM drive 012 of Sb4: numbered G1 ejects, and controller 002 controls mechanical hand 007 On optical pickup head 008 the CD B2 that deposits in the CD-ROM drive bracket 013 of numbered GT1 is taken out, the light of numbered GT1 Drive bracket 013 to close after taking out CD B2 release；

Sb5: controller 002 controls mechanical hand 007 and the CD B2 on optical pickup head 008 is put into numbered L1-4401's In CD casket bracket 009, mechanical hand 007 is then made to return start bit, release.

This utility model uses disk storage as the data buffer zone of external data to CD, it is ensured that the high efficiency that data are uploaded, Each CD-ROM drive can carry out independent read/write operation, and the data Coutinuous store between CD simultaneously, it is ensured that needs across sheet storage Big file can also store safely/shift/reads and writes, also maximise CD utilization rate simultaneously.

The associative operation of CD is only responsible for by mechanical hand in this utility model, contrasts existing intelligent optical disc memory device, mechanical hand Owing to being no longer necessary to serve the CD that quantity is too much, the intelligent optical disc memory device of same volume, the service of this modular device rings Fast more than 50% is wanted between Ying Shi.This utility model reduces the volume of CD intelligent base standardization, modularity optical disc storage Equipment so that optical disk storage apparatus is no longer heavy, it is mobile to be difficult to, and enhances the mobility of optical disk storage apparatus.

This utility model uses optical disc storage mode to store, relative to disk storage mode, the Information Security of optical disc storage Height, life-span length, power consumption are less.It is applicable to important, to need long-term that preserve/back up, colder data storage.

Although have been presented for embodiments more of the present utility model herein, it will be appreciated by those of skill in the art that not In the case of departing from this utility model spirit, the embodiments herein can be changed.Above-described embodiment is exemplary, Should be using the embodiments herein as the restriction of this utility model interest field.

Claims (4)

1. a rack huge capacity compact discs memory element modular device, it is characterised in that include power module, controller, magnetic Disk array, motor, guide rail, supporting construction, mechanical hand, optical pickup head, CD cage, CD-ROM drive, CD-ROM drive bracket and CD move Dynamic passage；

Described CD cage includes: CD casket bracket, runing rest, support disk and cage axle；

Described controller connects described motor, optical pickup head and CD-ROM drive；Described controller controls described machinery by described motor The movement of hands and the rotation of CD cage；

Described disk array connects described CD-ROM drive；

Described mechanical hand connects described guide rail by described supporting construction；Described guide rail is vertically mounted in described modular device；Institute State supporting construction and can do straight reciprocating motion along guide rail direction；

Described optical pickup head is arranged on described mechanical hand；

Each described CD-ROM drive connects a described CD-ROM drive bracket；Multiple described CD-ROM drive vertical stackings are placed；

Described cage axle upper and lower side is respectively equipped with described support disk, is fixedly connected with described cage axle described in two panels between support disk, Described support disk can pivot about with described cage axle；Described runing rest is vertical cylinder stock, and described rotation is propped up Frame is arranged on described in two panels between support disk about the described cage axle form of being centrosymmetric；The every described CD casket bracket with layer Being all connected with a described runing rest, described CD casket bracket can pivot about with described runing rest；

Described power module, controller, disk array and motor are arranged on the upper end of described CD cage.

2. a kind of rack huge capacity compact discs memory element modular device as claimed in claim 1, it is characterised in that described light Dish movable passageway is a cylindrical channel vertically, and the moving line of described optical pickup head is in described CD and moves On passage, the central axis of described optical pickup head is through the center of circle of described CD movable passageway；

When any a piece of described CD casket bracket in described CD cage is in open mode, if wherein depositing CD, then should CD is in described optical pickup head and is on described CD movable passageway；Open when the CD-ROM drive bracket in any described CD-ROM drive is in During state, if wherein there being CD, then this CD is also at described optical pickup head and is on described CD movable passageway.

3. a kind of rack huge capacity compact discs memory element modular device as claimed in claim 1, it is characterised in that described mould Block assembly includes 2 described CD cages, is placed in parallel about described 2 CD cages；Described guide rail and CD-ROM drive are positioned at described in 2 Between CD cage；

Being provided with 60～80 layers of CD casket between a support plate described in the two panels up and down of described CD cage, every layer of described CD casket includes 6 About described cage axle be centrosymmetric distribution described CD casket bracket；Bowing of 6 described CD casket brackets on every layer of CD casket Overlapping depending on projection, the described CD casket bracket that projected position is identical is connected on same described runing rest.

4. a kind of rack huge capacity compact discs memory element modular device as claimed in claim 1, it is characterised in that described mould Block assembly profile size is the 7U server size of 900 × 482.6 × 311.5.