JPS63237121A - Data transfer system for cls cartridge - Google Patents

Abstract

PURPOSE:To easily contain indefinite quantity of data by providing a definition part in an ADF process part and defining plural indicated CLS(Cartridge Library System) cartridges group as one volume. CONSTITUTION:A data transfer system is constituted of a DASD(Direct Access Storage Device) 2, a CLS cartridge part 3, a cartridge control part 4, a TSS terminal equipment 5 and a central processing device 20 installing the ADF (Automatic Data-migration Facility) process part 1. The ADF process part 1 installs the definition part 10, a data set assignment part 11 and a data write process part 12 and a cartridge keeping part 20 keeps many CLS cartridges. And the above-mentioned definition part 10 is the part which defines the plural CLS cartridges as one volume and it adds a volume ID number by inputting a specified command from the TSS terminal equipment 5. Thus, the CLS cartridges having these numbers are sequentially accessed when the numbers are specified.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Conventional technology Problems to be solved by the invention Means for solving the problems (Fig. 1) Working examples (Figs. 2 to 6) Figure) Effects of the invention cm required] Multiple CLS (Cartridge Ltd.
A single large-capacity volume is created using 5ysten+) cartridges, and an amount of data that is unclear as to how many cartridges must be stored can be easily stored in multiple cartridges.

[Industrial application field]

The present invention relates to a CLS cartridge data transfer method,
In particular, it relates to one that can be easily accommodated even if the capacity of one volume exceeds the capacity of one CLS cartridge.

A CLS cartridge is a cartridge used in MSS (mass storage system) type devices.

Each CLS cartridge has a capacity of about 150 MB, and if the capacity of one volume exceeds 150 MB, it cannot be stored in one cartridge.

[Conventional technology]

The CLS cartridge uses a one-cartridge/one-volume management system. That is, in a CLS cartridge, the storage medium is generally called a volume, and when data is stored, an identification number (called a volume serial number) assigned to each volume is specified.

As mentioned above, the capacity of this CLS cartridge is approximately 15
0 MB, and for large data sets that cannot be stored, it is necessary to specify multiple cartridges in advance. In this case, specify it using the following declaration statement.

DD VOL ÷ SE P = (CLSOOOlC
LSOOI, CLSOO2-・-・) Here, VOL-3ER is the volume serial number, and the numbers of the CLS cartridges belonging to this are CLSO00, CL
SOOt- is specified. When assigning data set A to this volume now, data set A has a total of 50)
rack, and there are only 10 tracks available in CLSOOO, the initial amount is 10) rank and the incremental amount is 10.
Specify the track. In this way, when using a large capacity data center, managing it is complicated and time consuming.

By the way, in MSS type secondary storage devices, data centers that are used infrequently are stored in relatively inexpensive but slow processing speed CLS cartridges, and when those data centers are needed, they are stored in CLS cartridges that are expensive but expensive. is a high-speed DA
S D (Direct Access Strag)
A secondary storage device hierarchical structure process is performed in which data sets are stored and used in a CLS cartridge (such as an e-Device) and transferred to a CLS cartridge when the data set is not used for a while. This is A D F (Automatfc Data
-migration facility) system.

[Problem that the invention attempts to solve]

With ADF, it is usually not possible to back up or migrate data sets that cannot fit in one cartridge.
ADF automatically selects the CLS cartridge for bank up and migration, stores it in the control data set, and provides multi-volume data used when restoring data centers or recalling data sets from DASD to CLS cartridges. If a set is used, processing becomes complicated.

Moreover, it is difficult to accurately determine the amount of data to be transferred from DASD to CLS Cart Fuji.
If you transfer it to a CLS cartridge thinking that it can be stored in a CLS cartridge of a book, but in reality it cannot be stored in one cartridge, it becomes impossible to store it in the middle because multi-volume has not been specified in advance, and you have to transfer it to a CLS cartridge again. - It may be necessary to specify the data set before transferring it.

[Means for solving problems]

In order to solve the above problem, in the present invention, as shown in FIG. 1, a definition section 10 is provided in the ADF processing section 1, and a plurality of specified CLS cartridge groups are defined as one volume. In addition, in Figure 1, 2 is DASD, te) is C
A cartridge section on which an LS cart is mounted, 4 a cartridge control section, and 5 a TSS terminal device.

[Effect]

For example, in the case of migration processing in which data sets are transferred from the DASD 2 to the CLS cartridge 3, for example, λ, the cartridge control unit 4 only needs to sequentially store the data sets in the CLS cartridge defined in the definition unit 10.
There is no need to calculate in advance how many 01 and S cartridges are required when storing data cents.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 2 to 6.

Fig. 2 is a configuration diagram of an embodiment of the present invention, Fig. 3 is a detailed explanatory diagram of the present invention, Fig. 4 is an explanatory diagram of the operation of the data set allocation section, and Fig. 5 is an explanation of the operation of the data write processing section. FIG. 6 is an explanatory diagram of the definition state of the volume.

In FIG. 2, parts with the same symbols as those in FIG. It is used to store cartridges.

The definition section 10 defines a plurality of CLS cartridges as one volume. For this definition, input the following command from the TSS terminal device 5.

CL S CRT V V OL (volset)
CS N (cSnXl, csn X 2, -) That is, the cartridge number is C3rlXl, csn x
Volse for the CLS cartridge called 2-.
A volume ID number t is assigned. This allows when volume ID numbers are specified, the CL of these numbers
The S cartridges will be accessed sequentially.

The data cent allocation unit 11 has a volume ID number (Vol.
set) performs control to search for CLS cartridges constituting the specified volume and allocate data centers, and first, the first CL cartridge constituting the volume is
S cartridge VTOC (Volume Table
Of Contents) and allocates a data set to it, but if space is insufficient, the VTOC of the next CLS cartridge that makes up the volume is searched and space is allocated within that CLS cartridge. In this way, a database is assigned to each CLS cartridge. This operation is shown in FIG.

The data write processing unit 12 performs data read/write control for the CLS cartridge, and searches for the VTOC of the first CLS cartridge constituting the volume, and when a data set is detected, the data set is Open processing is performed to read and write data in this CLS cartridge. VT if data is not completed
The next cartridge is detected from the OC and the same thing is done.

This operation is illustrated in FIG.

Next, the operation of the present invention will be described in the case where a data set stored in the DASD 2 shown in FIG. 2 is stored in a CLS cartridge.

First, the operator enters the volume ID number Volser 1 from the TSS terminal device 5 and the plurality of Cs that make up this volume.
LS cartridge numbers csnx1, C3nx2, C3
n
Define as the volume of lser 1.

Next, the operator inputs the data center name and storage command to be stored from the DASD 2 into the CLS cartridge using the TSS terminal device 5.

As a result, the cartridge control unit 4 controls the CLS of the above number.
The first CLS cartridge among the cartridges is set from the cartridge holding section 21 to the cartridge section 3.

Then, the data cent allocation unit 11 first allocates the data set to the first CLS cartridge csnx1. At this time, if there is insufficient space in the CLS cartridge csnx1, the space will also be allocated to the next C3nX2.

In this way, data set allocation is performed on the CLS cartridge csnx1 (in case of insufficient space, additional cs
nxz), then the data write processing unit 1
2 reads the data set from the DASD 2 and instructs the cartridge control section 4 to store the data set in the CLS cartridge held in the cartridge section 3. As a result, the cartridge control section 4
writes the data set A in the CLS cartridge C3nXl mounted in the cartridge unit 3, and further writes it in the CLS cartridge csnx2 if there is enough data.

In the above description, an example has been described in which storage from the DASD 2 to the CLS cartridge is performed based on a command input from the TSS terminal device, but of course it can also be performed automatically.

〔Effect of the invention〕

■ Conventionally, when assigning a dataset, the first CL
It was necessary to calculate the capacity to fit into the S cartridge at the time of allocation, but with the present invention, when storing the data center
There is no need to calculate how many LS cartridges are required. It is sufficient to specify the required amount once for the volume as the initial amount.

■ When reading or writing a data set, there is no need to specify all the cartridges in which the data center resides when opening the data center.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining the principle of the present invention, FIG. 2 is a configuration diagram of an embodiment of the present invention, FIG. 3 is a detailed diagram explaining the present invention, FIG. 4 is a diagram explaining the operation of the data set allocation section, FIG. 5 is an explanatory diagram of the operation of the data write processing section, and FIG. 6 is an explanatory diagram of the definition state of the volume. 1-A DF processing section 2-D A S D3-・-
Cartridge section 4--Cartridge control section 5--TSS terminal device

Claims (1)

[Scope of Claims] In an MSS type device equipped with a hierarchically configured secondary storage means for storing data in a CLS cartridge and storing data to be accessed in a DASD, there is provided a cartridge section on which the CLS cartridge is mounted. (
3), and definition means (10) for defining a plurality of CLS cartridges as one volume, and when a data set cannot be stored in one CLS cartridge when storing the data set in the volume, other data sets defined as the same volume are included. C.L.
A CLS cartridge data transfer method characterized by storing data in an S cartridge.