by Michael A. Goetts » Fri, 15 Aug 1997 04:00:00
Ok I confess, I'm a scsi newbie. I can't find any information on how to
enable the write cache on the WD Enterprise under Linux.
I'd assume there's some way to do it in dos or windows, but would such a
setting stick?
I'd appreciate any info on this.
Hmm... I suppose I could just be a man & write my own utility to do this.
After looking at the code for a program to format scsi zip disks it doesn't
seem all that difficult.
Mike
1. Enable write cache on scsi disc drive
I've got four FUJITSU MAP3735NC 73 GB SCSI disc drives connected to an
LSI LOGIC 20320-R U320 scsi controller.
I want to enable the write cache on two of the discs.
How can I do that unter SuSE Linux 9.1, kernel 2.6.5-7.104-smp?
I found no posibility to enable the discs' cache in the bios of the
controller.
Thanks,
Christian
+++++++++++++ boot.msg ++++++++++++++++
<5>SCSI subsystem initialized
<6>Fusion MPT base driver 3.01.03
<6>Copyright (c) 1999-2004 LSI Logic Corporation
<6>mptbase: Initiating ioc0 bringup
<6>ioc0: 53C1030: Capabilities={Initiator} <6>Fusion MPT SCSI Host driver
3.01.03 <6>scsi0 : ioc0: LSI53C1030, FwRev=01032700h, Ports=1, MaxQ=222,
IRQ=26
<5> Vendor: LSILOGIC Model: 1030 IM Rev: 1000
<5> Type: Direct-Access ANSI SCSI revision: 02
<5>SCSI device sda: 71553024 512-byte hdwr sectors (36635 MB) <5>SCSI device
sda: drive cache: write through <6> sda: sda1 sda2 sda3 <5>Attached scsi
disk sda at scsi0, channel 0, id 0, lun 0
<5> Vendor: FUJITSU Model: MAP3735NC Rev: 0108
<5> Type: Direct-Access ANSI SCSI revision: 03
<5>SCSI device sdb: 143571316 512-byte hdwr sectors (73509 MB) <5>SCSI
device sdb: drive cache: write through <6> sdb: sdb1 <5>Attached scsi disk
sdb at scsi0, channel 0, id 2, lun 0
<5> Vendor: FUJITSU Model: MAP3735NC Rev: 0108
<5> Type: Direct-Access ANSI SCSI revision: 03
<5>SCSI device sdc: 143571316 512-byte hdwr sectors (73509 MB) <5>SCSI
device sdc: drive cache: write through <6> sdc: sdc1 <5>Attached scsi disk
sdc at scsi0, channel 0, id 3, lun 0
<5> Vendor: FUJITSU Model: MAP3735NC Rev: 0108
<5> Type: Direct-Access ANSI SCSI revision: 03
<5>SCSI device sdd: 143571316 512-byte hdwr sectors (73509 MB) <5>SCSI
device sdd: drive cache: write back <6> sdd: sdd1 <5>Attached scsi disk sdd
at scsi0, channel 0, id 4, lun 0
<5> Vendor: FUJITSU Model: MAP3735NC Rev: 0108
<5> Type: Direct-Access ANSI SCSI revision: 03
<5>SCSI device sde: 143571316 512-byte hdwr sectors (73509 MB) <5>SCSI
device sde: drive cache: write back <6> sde: sde1 <5>Attached scsi disk sde
at scsi0, channel 0, id 5, lun 0
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