[Brmlab] AS/400

David Klusacek klusacek at atrey.karlin.mff.cuni.cz
Wed Sep 11 00:40:48 CEST 2013


To mi teda nekdo vysvetlete --- to jako do mainframu se montuji specialni
disky s takhle divne vetsim sektorem, nebo ten server normalni SCSI disky
nuti aby mu vraceli sektor i s nejakym ECCckem nebo CRCckem, ktery si na PC
pocita ten disk sam pro sebe a neobtezuje s tim CPU?


On Wed, Sep 11, 2013 at 12:00:19AM +0200, mrkva at mrkva.eu wrote:
> Už jsem si toho taky všimnul, když jsem konečně vyhrabal stroj se SCSI
> řadičem...
> 
> 133.174317] scsi 2:0:1:0: Direct-Access     IBMAS400 DRVS18D
> S27E PQ: 0 ANSI: 3
> [  133.174342] scsi target2:0:1: Beginning Domain Validation
> [  133.180428] scsi target2:0:1: Domain Validation skipping write tests
> [  133.180434] scsi target2:0:1: Ending Domain Validation
> [  133.180503] scsi target2:0:1: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5
> ns, offset 127)
> [  133.181237] sd 2:0:1:0: Attached scsi generic sg4 type 0
> [  133.182728] sd 2:0:1:0: [sdb] Spinning up disk..........ready
> [  141.208605] sd 2:0:1:0: [sdb] Unsupported sector size 522.
> [  141.208613] sd 2:0:1:0: [sdb] 0 512-byte logical blocks: (0 B/0 B)
> [  141.208618] sd 2:0:1:0: [sdb] 522-byte physical blocks
> [  141.209446] sd 2:0:1:0: [sdb] Write Protect is off
> [  141.209452] sd 2:0:1:0: [sdb] Mode Sense: cb 00 00 08
> [  141.210371] sd 2:0:1:0: [sdb] Write cache: disabled, read cache:
> enabled, doesn't support DPO or FUA
> [  141.211409] sd 2:0:1:0: [sdb] Unsupported sector size 522.
> [  141.213393] sd 2:0:1:0: [sdb] Attached SCSI disk
> 
> On 10.9.2013 22:54, Rado1 wrote:
> > Mozno teraz hovorim uplne z cesty, ale mainframe svet pouziva
> > 520B bloky nie 512B.
> > Tyka sa to diskov. neviem, ci CD/DVD nie je nejako emulovane...
> > 
> 



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