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

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Scsi command to find out maximum link speed of a sas drive

I am trying to find a scsi command that would determine maximum link speed to a HDD. Mode_sense page 19 gives negotiated speed I believe. Does anyone know how can I find out maximum link speed of a ...
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2answers
74 views

What kind of interface card do I need for a SCSI tape library?

I've recently come into possession of an Arcvault 24, a combination tape libary/LTO4 tape drive unit. It connects via a U320 SCSI link using HD68 wiring. The server that this library will be ...
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30 views

sas sense key data protect

I have several Hitachi Ultrastar SSD400M Model #HUSML4040ASS601. They had a block size of 520 and I was able to successfully format all but one of them using sg_utils' sg_format to 512. However, one ...
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1answer
57 views

rescan SCSI Disk Without Reboot

I installed/added 2 new disks on VMware. I executed this command and didn't detect any new disks'> ls /sys/class/scsi_host/ | while read host ; do echo "- - -" > /sys/class/scsi_host/$host/scan ; ...
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1answer
31 views

Ultra slow LTO4 read/write (2-3MB/s) SCSI + LSI Ultra 320

So I've installed pcie SCSI card LSI Ultra 320 (which worked fine some time ago on Dell R710/ Dell 2950 with LTO3), during booting I have discovered that sync speed for LTO3 (ultrium 960) is only ...
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68 views

Defunct Disk Drive (DDD) in IBM ServeRAID 6i, RAID5 array

My RAID 5 array is "Critical (CRT)" Status, since one of its six 146GB 10k rpm is marked as defunct. Is it possible to replace the defective disk (FRU part number 32P0731) with a similar HP disk ...
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22 views

Can't see other VHDs after detaching another. Azure Ubuntu VM

We have encountered high Disk IO on our Ubuntu 14.04 VM's running mongoDB. On Windows Azure. To solve this issue we have changed the VM size from A2 to A3 (to add the additional data discs) and ...
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36 views

3 x 146 GB scsi hdd data recovery

Bought a new server with sff sata hdds. Before I got a chance to install the new server the old HP ProLiant DL385 Opteron 8218 with 3 x 146 gb scsi hdds has failed. I think the hard discs themselves ...
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1answer
136 views

/sys/class/scsi_host/host0 not found - get it back without reboot?

I have a oracle linux 5.8 virtual server (virtualized via oracle virtual manager, which is using xen), which has a couple of luns attached via scsi. Now I wanted to attache more luns, but found that ...
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3answers
147 views

SSD hard drive compatibility with Dell 1U and Supermicro 1U [closed]

I have a Dell Poweredge 1850 1U and also a custom 1U Supermicro, both hot swappable drive bays. For some reason, it seems the hdd to ssd drive tray is not working with snapping in. I've used this ...
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1answer
24 views

Backing up data from DELL Perc4 LSI controller

We had a failure of a critical server this morning. Most likely the PSU failed, now we need to Backup the data to another system. The server in question is a DELL 2800, featuring a built-in PERC4E ...
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2answers
149 views

How to check HDD in Linux for bad blocks

Since 2 days one mysql server can't start. I get this every 5 secs in the syslog: Dec 17 09:24:35 backup kernel: [ 681.132013] ata2.00: exception Emask 0x0 SAct 0x50000 SErr 0x0 action 0x0 Dec 17 ...
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1answer
125 views

SCSI disks capped at 40 MB/s

I have a batch of SCSI disks and a controller; the drives are HP 72,8GB 10k RPM Ultra320 SCSI (model number BD07296B44), the controller is an Adaptec AIC-7892A U160/m, the issue is that I can't get ...
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2answers
515 views

Hardware mods: kludging a conversion from U320 SCSI to SAS/SATA

I apologise if this isn't an appropriate question for this forum. I've an elderly server that works well and that I'd therefore prefer not to scrap entirely. But I would like to replace the current ...
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1answer
758 views

CentOS 7 mpath Install, Can't Find /dev/centos/root

I am attempting to install CentOS 7 on an older SuperMicro H8QM8 motherboard (AIC-7902 SCSI controller, aic7xxx kernel module) with 3 attached drives. The Adaptec SCSI bios recognizes the drives and ...
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1answer
44 views

“Core Charge” on defective server HDDs

I have collected a pretty decent amount of SAS and SCSI disks over the years that have a predictive failure warning. I was just about to throw them all out, but wondered if any of the manufacturers ...
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2answers
2k views

How to replace SCSI with SATA or adapt SCSI to SATA drives

At first, I apologize for my question, but I am complete beginner. My friend gave me an old HP Proliant DL385 server which was replaced in bank, where he works, by newer stuff. Because of privacy, ...
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1answer
92 views

Fiberchannel disk Centos6.5

I got some fiberchannel disk shelves including several 300Gb SCSI drives and a HP c7000 blade system with multiple blades in it. As there is no storage controller (filer) available i have to do it ...
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1answer
155 views

Can I rely on scsi host numbers to always stay the same?

I want to detect whether a disk is attached to the correct sata-port. While lsscsi gives me some useful information about the used host, I was wondering whether the SCSI host number will always stay ...
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1answer
281 views

San lun wwid number 3 in front

I have a san lun in a linux server, using this following command I saw this: scsi_id -g -u -s /block/sda 38001438005dea3760000700002660000 #3 number in front of wwid sg_inq -p 0x83 /dev/sda | ...
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1answer
48 views

Raid 5 on two scsi buses with different maximum speeds

I'm quite a noob, I'm trying to set up as a study machine an old HP ProLiant DL385 G1. I've configured a RAID 5 out of six SCSI 3.5" HDDs using: - Smart Array 6i controller; - (4 x SCSI Ultra320 ...
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2answers
44 views

What limits a Device not to detect multiple LUNs behind a single target?

What limits a Device not to detect multiple LUNs behind a single target? What is required to make this possible in broad perspective? I want to know if there are any limitations in SAS/SATA or SCSI? ...
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1k views

ESXi 5.1 SCSI and NMP Errors Filling vmkernel.log

On a group of ESXi 5.1 systems, I am seeing the following errors every 5 minutes or so: 2014-04-04T11:22:45.374Z cpu1:8193)NMP: nmp_ThrottleLogForDevice:2319: Cmd 0x1a (0x4124022be3c0, 0) to dev ...
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1answer
34 views

M1500 having to cycle tape drive power when enumerating

I'm trying to use a M1500 tape library that is new to me. Whenever the SCSI bus enumerates (at BIOS load and when Linux is booting) the enumeration will hang until I turn off and back on the tape ...
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2answers
73 views

redundancy in a single SCSI target

following-on from my earlier question about resurrecting an ancient Intergraph 6800 machine (licence file for extra logins on ancient Unix (CLIX) system), the original problem was a failed hard disk ...
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1answer
276 views

SCSI Windows NT from vmware to virtualbox [closed]

We are trying to virtualize an old Windows NT 4.0 server in a bad shape. We've managed to create an vmdk image using vmware converter coldclone boot cd and we can successfully run it on vmware ...
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1answer
28 views

external mSAS expansion

I got two servers. One with a Intel RS2MB044 and one with an Adaptec ASR-51245, both got an external mSAS connector. I need to connect these tho servers together, basically to share the file system ...
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1answer
125 views

IBM ServeRAID 2 channels SCSI controller compatible with IBM x366 server which use SAS onboard?

I own an IBM x360 server in which I have an IBM ServeRAID 2 channels SCSI controller for which I use the two channels. Channel 1: the server's HDD. Channel 2: IBM EXP300 HDD Enclosure. Will this ...
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2answers
317 views

Is there a version of mt for windows, or something similar?

First of all, I'm not sure if this is the best place to ask this question. I was torn between SF and SU, but I decided for SF when I saw that questions about tape drives are scarce in SU. I need to ...
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2answers
384 views

Gathering buslogic SCSI hardware and virtual machine operating system

I'm trying to use Powershell to get SCSI hardware from several virtual servers and get the operating system of each specific server. I've managed to get the specific SCSI hardware that I want to find ...
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1answer
43 views

Method of obtaining SCSI hardware on all virtual servers

I'm looking for a method to check what the SCSI hardware of a VM is and identify any servers that have virtualbuslogic. I'm trying via PowerCLI to make this happen although I'm not sure how to specify ...
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1answer
2k views

scsi and ata entries for same hard drive under /dev/disk/by-id

I am trying to set up a ZFS pool using 4 bare drives which I have attached to my Ubuntu system via a SATA hot swap backplane. These are Hitachi SATA drives. When I list the contents of ...
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1answer
221 views

What hard drives does a HP Proliant BL20p G3 Blade Server take?

Full name: HP Proliant BL20p G3 Blade Server 380634-B21 I'm currently a student and got a Proliant with no hard drives for £19.99. Could anyone point me to the right hard drives to get for it, I'm ...
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1answer
574 views

Linux SCSI Scan - is it still echo “- - -” in Linux 3.2

I'm working with attaching new SCSI drives to a virtual host, and the current method in my team's work instructions is to rescan the SCSI bus with: echo "- - -" > /sys/class/scsi_host/host0/scan ...
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1answer
162 views

How to test SCSI drives faulty or not?

I have 10 scsi drives which are used. How do I test them to ensure they are working correctly? Some have red stickers presumably indicating they are faulty. The server I have access to is an IBM with ...
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1answer
1k views

Harddisks falling offline for unknown reason

I have 7 systems running the setup below. Now and then a different disk falls offline, but on closer inspection the disk is good and not faulty and works flawlessly for at least another year. Since ...
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82 views

Raid 5 scsi fault

I have no much knowledge about servers and I was looking all day around the internet about finding a solution to my raid 5 problem. All of a sudden two disks failed. The server won't boot (HP ...
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1answer
540 views

PowerEdge 2900. Want to use as a SAS wiping server, and skip Raid configuration for each drive. Possible?

I've got a Dell PowerEdge 2900 with 8 SAS slots in the front. I want to be able to load drives quickly without setting them up in RAID. We have a pile of about 50 SAS drives that need to be wiped. Is ...
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1answer
349 views

DL360 G2 SNMP drive failure location

I've got this service call with the snmp information provided below, about the drive failing in HP DL360 G2 server: Error log Event Type: Error Event Source: Storage Agents Event Category: Events ...
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1answer
111 views

Ultra 320 SCSI termination

I want to connect an old 12-bay DataStor InfoStation (which is an external storage cabinet) to an LSI MegaRAID SCSI 320-2E host bus adapter and now wonder what bus termination guidelines to follow. ...
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2answers
1k views

How do you remove attached FC LUNS from CentOS 6?

We have a Qlogic QLE2560 HBA running on a Centos 6 server. I am needing to remove the attached LUNS remotely. I do not have any software from qlogic installed on the device. Their are 2 LUNS ...
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1answer
307 views

How do I install my drives in the PowerEdge 2850

Just purchased a "fully functional" PowerEdge 2850 server on Ebay, but, it arrived without any drives! So much for "fully functional"! Anyway, I have drives arriving today. I only have 4 caddies, ...
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1answer
2k views

How to get HDD parameters from SCSI controller

The SCSI controller we are using is IBM RAID M1015 and a SATA 3 HDD is attached to it. Now the question, is there any way to get the HDD specific parameters like HDD Model number/Manufacturer, Storage ...
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95 views

SAS/SCSI Errors in Syslog: Kernel FAILED

I have a Dell 2950 2U rackmount server with 3 146GB SAS drives in a RAID array, running Slackware 10.2 (an old version, I know). Recently I am seeing these errors in my /var/log/syslog repeating very ...
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1answer
27k views

What does “- - -” in 'echo “- - -” > /sys/class/scsi_host/host0/scan' mean?

I know the linux command echo "- - -" > /sys/class/scsi_host/host0/scan is used to rescan scsi host. But what does "- - -" mean in the command?
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1answer
194 views

Forcing a SCSI HDD to rewrite a damaged sector

For a SATA/PATA HDD, this would be the normal procedure: http://www.sjvs.nl/?p=12 But a customer of mine has an old server with actual SCSI drives. I have tried re-writing the sector with dd to no ...
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1answer
663 views

mpt2sas1: log_info(0x31120303): Disks dropped from RAID

In my syslog I get loads of: Mar 1 11:20:07 franklin kernel: [72947.878407] Waking error handler thread Mar 1 11:20:07 franklin kernel: [72947.878415] Error handler scsi_eh_1 waking up Mar 1 ...
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1answer
784 views

ntldr is missing error, is issue scsi/raid boot drive identification?

I stopped an ibm x series 266 server to clean it out. It has two scsi drives in raid 1, 36 gb. While I had the drives out for cleaning I started the server to get the fans running, to exhaust dust ...
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2k views

How do I get individual SCSI drives to show up as primary/secondary drives?

I am working on decommissioning an old server for a client. The server is an older Dell PowerEdge 1600sc with four SCSI drives. Two are stand-alone, and the other two are in RAIDx (not sure the actual ...
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7answers
18k views

How can I successfully mount an 8-bit SCSI drive on a modern computer?

I have a number of internal 8-bit SCSI-1 drives that I'd like to archive for historical purposes. These are all the old NeXT Cubes and NeXTStations (monochrome and color) that were used by id ...