Re: Question on Tape Density, etc...

[Chuck Lewis <CLEWIS@xxxxxxxxxx>]

Pat !

Thank you SO much for the GREAT info - where did you get this from ?

I'm new to this AS/400 site so I'm new to this tape unit (coming from a 3590,
3490 shop...) and am REALLY wondering about it...

Are you actually using one ?

Did the letter have a date ?

I'm wondering about the IDRC feature - does this imply that it is PART of the
drive/AS/400 or something you can get and why wouldn't it be "active"  ?  :-)

Thanks !

Chuck



Pat Barber wrote:

> Chuck Lewis wrote:
>
> >  but I want to know if I’m missing something !
> >
> > 2) WHAT should this tapes be initialized as ? I'm using DENSITY(*FMT2GB)
> > using Maxell HS-8/112 Helical-Scan 8mm Data Catridges.
> >
> > 3) They SAY the "nominal" capacity is 2.5/5.0 Gigabytes.What is the 9427
> > capable of ?
>
> Here, it is, straight from the announcement letter:
>
> Abstract
>
> The IBM 9427 8mm Tape Cartridge Library offers AS/400 users low cost
> automated tape storage of up to
> 280GB in a very compact space using industry standard 8mm Tape
> Cartridges at very low costs per
> megabyte of storage. Each 9427 includes one or two 7GB 8mm tape drives.
> The 9427 supports two
> ten-cartridge magazines for a total of 20 tape cartridges. The 9427
> comes in single drive (#0701) or dual
> drive (#0702) versions. The dual drive feature is field installable.
> Tape cartridge capacity is 7GB and the
> instantaneous data transfer rate is 500KBps. Using Improved Data
> Recording Capability (IDRC), effective
> compressed tape cartridge capacity is up to 14GB, and effective data
> transfer rate is up to 1MBps,
> depending on the type of data. Total 9427 capacity is up to 280GB with
> IDRC active. The 9427 can be
> used for save/restore, alternate IPL, program distribution, migration,
> data interchange, automatic migration
> of data between DASD and tape, and mass storage for data archive. The
> 9427 8mm tape drives are
> capable of reading and writing cartridges written by the 7208 Models
> 002, 012, 222, 232, and AS/400
> internal tape drives. To write cartridges on the 9427 to be read on one
> of the above tape drives, it is
> necessary to use a cartridge of the correct capacity (2.3GB, 5GB, 7GB).
> Full interchange of data is
> supported with the internal 7GB 8mm Cartridge Tape Unit feature on the
> AS/400 Advanced Series.
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