Questions tagged [scsi]

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linux target driver (tgt) throws an IO error when specifying block storage type (bstype) glusterfs

I am trying to use glusterfs and tgt to create (iscis over glusterfs infrastructure). In the glusterfs documentation, they mentioned that using the libgfapi, the datapath skips FUSE. I installed tgt (...
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Scsi controller number different in VMware properties and corresponding linux host

The device properties for an xyx123 linix vm on vsphere client shows 2 scsi controllers are connected. Scsi 0 and Scsi 1. All the new virtual hdds that are added shows scsi nodes as 1:3, 1:4 on ...
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1answer
252 views

Using QEMU to emulate DOS with passthrough SCSI access?

I'd like to use QEMU to emulate an MS-DOS system that will run a very specific proprietary software that needs to talk to a SCSI tape device. I see that QEMU offers passthrough access to the host ...
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41 views

how to securely delete a file from ufs device in linux

Assuming I have some files stored on a ufs storage chip and I mounted it on linux. Is there any possible way to securely delete these file?
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620 views

blk_update_request: critical medium error, but hdparm is successful

I apologize for the long post; the tl;dr version is that I got a couple of "critical medium error" messages in dmesg, but hdparm is able to read the affected sectors just fine. What gives?! Read on ...
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667 views

How to connect a USB to SCSI-2 adapter to a SCSI-1 50 Pin Centronics Tape Drive?

I currently have a tape drive that looks like: where the right side is a SCSI-1 50 Pin interface. I have at my disposal a few USB to SCSI-2 adapters, such as the iomega scsi to usb adapter, and the ...
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1answer
83 views

What is the best way to connect an old Tandberg QIC tape drive in today's day and age?

I currently have a ton of QIC-250MB tapes that I would like to read from (its been 30 years). I have a Tandberg TDC 3600 SCSI interfaced tape drive but I am lost how to connect it. In the past, with ...
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1answer
548 views

Why my Hyper-V converts the disk to SCSI

I have a SATA disk, and I installed Windows 10 on it. After I enabled Hyper-V, I created some virtual machines. However the VM all see an SCSI disk, and I can't find out how to change it. Even the ...
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2answers
4k views

Reading data from an old SCSI hard drive

My girlfriend has an old computer that she didn't use for MANY years. It has some important pictures on its hard drive, so I tried to access that data. The HDD is an old Seagate ST34520W with a 68pin ...
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1answer
73 views

Too many paths - impact on FC performance

I heard that too many paths could result in impact of storage infrastructure performance. Can somebody please answer why? This is not regarding number of paths for a single server, but looking at ...
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96 views

iostat equivalent for SCSI generic devices /dev/sg

Is there any equivalent tool of iostat with which i can monitor I/O load on SCSI generic devices that do not have a block device? I am interested in : operations per second reads/writes/others ...
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444 views

How to securely erase HPA, DCO, and any bad sectors of a SCSI HDD

Does dd if=/dev/zero of =/dev/cciss/c0d0 bs=1M wipe over the HPA, DCO, and any bad sectors?
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385 views

How to connect SCSI-2 External Hard Drive with HD50 connector to PC?

Is there a way I could connect my HD50-connector SCSI2 external hard drive to a PC and have it recognize it as a standard drive? I would like to avoid solutions like the extremely rare and expensive ...
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598 views

Is there a way to convert VirtualBox .vdi harddisk from SATA to SCSI?

I have a virtualbox virtual SATA harddrive and need to convert it to SCSI (lsi). Is there a possibility how to do it with VBoxManage? I cannot find it in the documentation. I've also tried it by ...
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1answer
1k views

How to get the SCSI identifier by scsi_id command?

I never want to change the SCSI disk's name(/dev/sd*) even if the one of disks has been removed. Good article I found on Internet says that "Use the scsi_id command to get the unique SCSI identifier,...
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1answer
318 views

Is it possible to make a USB flash drive with just 1KB of storage?

Introduction On a USB device I am developing, I want to offer a USB Mass Storage endpoint for configuration updates. The device is connected internally via a USB pin header, and to update the ...
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1answer
407 views

How to run windows command line when getting diskless boot error?

I am using diskless boot Windows 7 with iPXE. PC is intended to boot from vhdx, which i obtained by snapshotting sata(ahci) hard drive with sysiternals disk2vhd utility. Hard drive was previously in ...
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59 views

SSD is not detected if inserted after bootup in redhat Linux

I am working on redhat linux system and it is not detecting Solid state disk(not working as hot plugging) if i insert it after boot up. If the SSD's are present before booting up of system then those ...
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141 views

How to configure iSCSI Redirection on either Linux or Windows?

I am trying to set up an iSCSI redirection environmnt. First I tried with Windows Server 2012 following this video. But it seems the Windows Server 2012 doesn't provide the iSCSI redirection feature. ...
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2answers
495 views

Why is my tape drive so slow?

I have bought a used Quantum Ultrium LTO-4 tape drive and attached it to an HP Smart Array P400 SAS controller in my HP ProLiant N54l. I use FreeBSD 11 as my operating system. Now I have inserted a ...
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3k views

How to run chromium os on Hyper‑V without compiling anything?

Since Windows 8, Hyper‑V supports booting uefi systems provided the hard drive is emulated under an scsi controller, the result is if I download a build from http://chromium.arnoldthebat.co.uk/ ...
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1answer
372 views

Accessing ironkey from command-line Linux system

So, this USB-key device (which registers as a CD-ROM / SCSI-device; weird, I know), which ships with a read-only partition (kinda?) including a Linux binary you need to execute to access to the data-...
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1answer
380 views

Why aren't there any SCSI drivers for my install of UBUNTU 16.10 on my poweredge 2650

I was gifted a server, and I am trying to install Ubuntu 16.10 on it(dell poweredge 2650) and regardless of if I try to install Debian or Ubuntu I continue to run into the same issue; my scsi drives ...
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1answer
489 views

How to add a SCSI disk to share between two Server 2012 in Vmware?

I'm trying to add a second disk as SCSI to Windows Server 2012. This disk has to be accessible to another Server 2012 for some load-balancing purposes. How do I create such second disk and share it ...
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1answer
369 views

Connecting a 64 pin SCSI Drive to a Linux system

I have an old SCSI drive with a 64 pin connector that I had attached to an SGI machine and I would like to connect it directly to my Linux machine (SuperMicro Server). Is there an adaptor cable that ...
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1answer
822 views

VM to VirtualBox converted image - Could not find a storage controller named 'SCSI Controller' error

I converted a VMDK to an ovf image using ovftool. The VMDK had a SCSI disk. Now post conversion Virtual Box isn't able to import it - it gets the error Could not find a storage controller named '...
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1answer
2k views

Qlogic qla2xxx fibre channel HBA not displayed by targetcli

I'm experimenting with FC with a view to setting up a SAN but appear to be stuck at the first hurdle - I can't seem to get targetcli to give me the option of using my qla2xxx card as a target. I've ...
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605 views

USB drive not getting recognized as scsi device in custom linux kernel

I am facing a slow write speed problem with a USB drive in my custom linux kernel. I suspected to be a hardware problem but with the same hardware and Opensuse 12.1 OS, write speed of my USB drive is ...
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1answer
581 views

Raw reading USB mass storage or SCSI

Wife's USB HDD has a slight issue where a folder refuses to open (NTFS filesystem). I have been able to image the drive with Linux but for one sector (sectors are 4096 bytes). Reading that sector ...
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2answers
1k views

What is the maximum SCSI LUN size?

What is the maximum size of single (i)SCSI LUN from perspective of SCSI protocol, what is the limit?
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1answer
82 views

External scsi tape: before server?

I have an old 2600 rx HP server and an external tape DAT drive which ised wide SCSI (68 pins). Do I have to power on the tape before the server, or is it the same if I power on the tape after turning ...
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2answers
2k views

Attach Cloud Storage as External Drive to Windows

I am looking to use a Cloud Storage provider as an attached drive on Windows Server 2008, kind of like an iSCSI storage device. I downloaded Google Drive which created a new folder on my system, but ...
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2answers
3k views

Attaching SCSI drive through USB

I have a number of wide, 68-pin SCSI drives for which I need to copy the data off. I have tried to use a wide-to-narrow SCSI adapter (68-pin to 50-pin) coupled with an Adaptec SCSI-to-USB adapter (50-...
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2answers
3k views

Dangers of using external power source with internal hard drive

Is it okay to connect a internal hard drive (IDE/SATA/SCSI) to an internal controller (e.g. on-board the motherboard) and supply the power via another power supply or an external unit like the one ...
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221 views

How to connect Ultrium 460 tape drive? (Ultra320 SCSI)

I have the opportunity to get, for nothing, an Ultrium 460 tape drive, and LOTS of tapes, which would give me enormous amounts of storage space to frivolously use on nothing at all. The problem is ...
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1answer
448 views

Is SCSI asynchronous IO really slower than synchronous one?

I am completely confused with what I had just read on these two pages: http://www.scsifaq.org/scsifaq.html#_Hlk410546176 http://www.cse.scu.edu/~tschwarz/coen180/LN/scsi.html Both claim that SCSI ...
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1answer
554 views

probe-scsi-all shows two disks with the same PhyNum

I'm attempting to remotely determine the physical location of two disks in an Oracle SPARC T4-1 server prior to performing a Solaris install. Because the disks use World Wide Names (WWNs), the Oracle ...
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1answer
1k views

What types of SCSI connectors are these?

I was given an old server and old storage array, and told that they go together. My boss wants me to gain access and migrate all the old data to our current file server. Knowing basically zilch about ...
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1answer
202 views

Can I turn off external SCSI tape drive?

I have a couple of external tape drives connected to a server (Ultra320 SCSI). I do not use them frequently, but they are on all the time collecting dust (because of the fans). If I turned them off (...
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1answer
83 views

Linux dynamic SCSI device naming

When linux boots up, it assigns SCSI drives to various sd* names, in increasing alphabetical order. If I remove some drives (while the system is running) and re-add them, is it guaranteed that the old ...
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691 views

dd SCSI image into VirtualBox

I have a very old Linux box (actually dating from 1998) wich used to run a legacy system. The system was discontinued, but the data must be available for consults. My idea was to make a image from the ...
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3k views

Duplicate SCSI HHD to SATA SSD

I got the Cavalry Dual Bay SATA Hard Drive Duplicator Docking Station and it works great when I Clone/Duplicate SATA Hard Drives but I have a couple of SCSI HHDs that I want to Clone/Duplicate but the ...
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2answers
81 views

Cache of SCSI disk

I have a SCSI controller (HP Smart Array 642), using cciss driver on Linux, which is connected to several SCSI disks. I am trying to optimize the communication between these devices and came to the ...
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2answers
2k views

What are these SCSI connection types?

Simply put, what's the difference between these two SCSI connections? The top one comes out of an IBM x Series server and the bottom one comes out of a Dell PowerEdge (I beleive). Are these typical ...
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1answer
2k views

Can't read audio CD in Linux, and I getting Sense errors in syslog

Using Ubuntu 12.10, I get this awkward error when I try to play a CD. Here is what dmesg shows when I try to play an Audio CD with vlc /dev/sr0 sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=...
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1answer
14k views

SCSI LSI Logic vs SAS

I read that LSI SAS offers better performance than traditional SCSI. While creating a virtual machine in Vmware, i have options to select either Bus Logic, LSI Logic or LSI Logic SAS. However, LSI ...
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1answer
126 views

Which cable do I need?

I just bought an HP MSA30 hard drive array. I believe it's the dual bus model because the interface card looks like this.... Can anyone tell me what type of cable I need to connect this to my server? ...
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260 views

Installing Adaptec 2906 SCSI card on Vista machine

I'm having some trouble installing an Adaptec 2960 SCSI card using the Add Hardware wizard on this Vista machine. The machine isn't autodetecting the card, but when I attempt to point the wizard to ...
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1answer
761 views

Different hard drive terminologies? [closed]

I have come across terms like SATA, SCSI and SSD. Can somebody please elaborate the differences between these terms based on their technology and more importantly applications and industry trends?
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2k views

CentOS - Add additional hard drive raid arrays on Dell Perc 5/i card

We have a Dell Poweredge 2900 system with Dell Perc 5/i card and 4 SAS hard drives attached, with NTFS partitions on them. We installed CentOS on one raid array on this controller with a different ...