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Questions tagged [scsi]

Small Computer System Interface (SCSI) is a set of standards for physically connecting and transferring data between computers and peripheral devices.

The physical SCSI interfaces - originally used to attach peripherals like disks, scanners and tape drives - have mostly been superseded by and .

The SCSI command set that was originally defined for (parallel) SCSI buses has been carried forward with minimal change for use with , , Serial Attached SCSI , and other transport layers.

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Quick Help Cloning Disk

I want to clone the OS disk on a Windows 2003 server. The server has 2-SCSI drives, and I simply would like to clone the first drive to the second. There is no RAID card in the server, and software mirroring requires dynamic disks. When I tried…
charnley
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SAS vs SSD Performance

Hi does anyone have any input on how a SAS 15k RPM drive would perform compared to a sata based SSD drive, assuming its using the latest verison of sata. These drives would be in a 4 drive raid 10 configurtion and the sizes are around 70GB per…
Payson Welch
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Where is /proc/scsi/scsi in Debian 6?

I recently installed Debian 6 in a VM on ESXi 4.1, but I noticed there is no /proc/scsi/scsi. Am I missing a module which provides that, or is there a different way of doing things like echo "scsi add-single-device 0 0 1 0">/proc/scsi/scsi?
Cakemox
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Linux machine can't find its tape drive

I have an older HP NetServer LPr with what is apparently a Symbios SCSI card connecting to a Quantum SuperLoader 3 that is DLT based. From time to time, we seem to lose the connection to the autoloader. It's usually due to flaky power, but not…
Kyle
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In Debian (>= 5.0 lenny) how to set scsi_mod's max_luns option?

The scsi_mod has this option max_luns which is the "last scsi LUN". How can I view the current setting and change it?
Aleksandr Levchuk
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Connecting SCA-2 Ultra320 disk to some controller using some cable

This is "blast from the past" type question. I need to make a backup of data stored on SCSI disk used in a large industrial machine. That machine takes SCSI Ultra320 drives like Cheetah 10K.7 ST336807LC. This drive has 80-pin SCA-2 connector and…
LetMeSOThat4U
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Read data off Apple NGFF M2

I have one of those propietary NGFF M2 SSDs found in older Macbooks. I bought a converter which is supposed to convert it to a standard NVMe. When I plug it in my Linux box only sees it as a SCSI device. It doesn't show in lsblk and I can't dd…
Shawn Welch
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number of read and write processes affect the io performance of different virtio-scsi luns

QEMU emulator version 2.9.0(qemu-kvm-ev-2.9.0-16.el7_4.11.1) Linux 3.10.0-693.el7.x86_64 There is two luns attached via virtio-scsi (vcpu=1,virtio-scsi controller queue set to 1) Firt: dd /dev/sde device only , the iops was…
user3323381
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Dell PowerEdge Storage Upgrade

I'm trying to upgrade the U320 SCSI hard drives on a Dell PowerEdge 2600 (400 Mhz Front Side Bus) for larger capacity hard drives. Unfortunately, the U320 SCSI drives only come in a maximum size of 300GB and they are extremely expensive compared to…
Austin
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iSCSI read errors during iPXE boot

EDIT: Substantially updated 2019-02-16 to include additional troubleshooting information. I've had iPXE and iSCSI environments in place for years now, but for the first time I'm attempting to do an iSCSI boot and the iPXE is having a problem with…
tlum
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SCSI RAID 5 configuration probabbly lost: is it a good idea to write-protect disks?

I need to restart a Dell Precision 670 server that includes a Dell 320 / DC SCSI RAID adapter. The server was shut down for 7 years and the BIOS setup was lost. I have 3 disks configured in RAID5 (it's written on disks), their model is seagate…
Christophe
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Attaching more than one Server to a Tape Library

We are running multiple Dell PowerEdge's and want to connect them to a Dell TL1000 Tape Library. For my understanding, what we need is HBA cards for each Server to get the SAS connection. I ran into the problem, that the TL1000 provides only one SAS…
Moritz
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Centos 7 server isn't able to see fiber channel LUN SCSI devices

I have a Fiber channel connected via SCSI SAN that I am not able to see. I would like to be able to access these drives as if they were mounted. Perhaps the entire thing is I have no to little experience with SCSI devices , but I expected to see…
LUser
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Simulate write delay to SCSI disk on Linux machine

I am testing my application and want to observe behavior when I get delay in SCSI disk write on a linux machine (Fedora). I want to control the delay to control the test. I am exploring FUSE as an option to achieve this, I googled and there seem to…
Aditya
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How to determine disk connection type in Linux

So this might be an obvious question, but I am managing several servers over a network and I would like to be able to find out what type of connector each server is using (i.e. SATA, SCSI, IDE, etc...) without powering off the machine and looking…
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