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 virtual disks not showing up on RHEL 7.X KVM guests

For whatever reason I can't get my virtual disks to show up on any of my RHEL 7.X guests (libvirt + KVM). The XML is configured just like my other guests so I know it isn't an issue on that end. It ...
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3answers
45 views

linux scsi physical topology

Is there any way to find the physical topology of a drive on the SCSI bus in linux? here's an example: >: for drive in $(find /dev/disk/by-path -name \*0|sort); do udevadm info --query=path --...
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Received legacy SPC-2 RESERVE/RELEASE while active SPC-3 registrations exist, returning RESERVATION_CONFLICT

I have 2 iSCSI fileio backstores. I try to Determine whether shared disks can be used as tiebreaker disks . For that I run on the iSCSI initiator a tool from IBM to release the reservation: [root@...
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52 views

How to enable space reclamation from KVM guest to ZFS zvol iSCSI target?

I have a ZFS volume "tank/kvm/webhosting", exposed through iSCSI (using tgt) to KVM guest. <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='native' ...
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1answer
56 views

Failing to mount SCSI from HP Modular Smart Array (MSA20)

I have acquired a HP dl360 g4p with a MSA20 Modular Smart Array. Currently I have Arch Linux installed on it since I had some issues with the graphics. But that is not why I am asking a question. ...
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44 views

FibreChannel-SAN SCSI-block-devices get lost

There are 3 LUNs on a FC-SAN I want to access using 2 HBAs (with two paths each. When the system is booted, everything seems fine, but after a while the sd*-devices from the second HBA disappeared ...
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3answers
6k views

How do I power SATA drives in my DELL poweredge 2850?

I have a Dell 2850 which I've been fairly happy with. It runs RAID 5 to 6 Hot-swap SCSI drives, but I'd like to add some cheap storage. So I bought an Intel PCI-X SATA raid card and tried to install ...
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5 views

yosemite backup tape alert core 4087

An IBM eserver xSeries 236 (running RHEL 5.6 x64) has attached a tape SCSI drive HP Ultrium 1-SCSI and use yosemite as backup tool. Yosemite reported the following error message: Dcs: Detected tape ...
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1answer
75 views

Fibre channel: LTO tape overwritten on bus reset

There is a situation that we had at out customer that I'd like to understand better. Here's what happened: A library with LTO tape drives is connected to a fibre channel environment Archiving ...
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23 views

SCSI to SATA conversion

I have Hitachi dk514c-38 drive, which is producing ticking sound. These drives not available anymore. Can I connect a SATA drive instead of this with some converter? I also want to know if these is ...
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20 views

Unable to see the iscsi luns given from a second target server to the same initiator on RHEL

I configured a target server on RHEL 6.7 and provided the LUNs for a machine running on RHEL 5.4. After few days, the storage on the target server is completed and I configured another target server ...
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1answer
719 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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9answers
68k views

Disk full, du tells different. How to further investigate?

I have a SCSI disk in a server (hardware Raid 1), 32G, ext3 filesytem. df tells me that the disk is 100% full. If I delete 1G this is correctly shown. However, if I run a du -h -x / then du tells me ...
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0answers
145 views

What causes SCSI command timeout over 30 seconds?

System description: CentOS 7. SuperMicro X9DRW-iF board. Latest BIOS (and SCU option ROM), using SCU option ROM. Four 300GB WD HDDs connected to the board's SCU. Six HDDs connected to the six ...
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2answers
52 views

80 pin SCSI Raid Controller to SATA SSD's on IBM e336

I have an Old IBM e336 1U Sever. Currently the only Hard drive in the system is a Ultra160 SCSI drive. This drive is old and making some noises indicating that its life is going to end soon. Though ...
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0answers
62 views

Mirroring on external SCSI and iSCSI disks inside same volume group

On IBM P5 505 (maint level 5300-07) servers there is a concurently accessed external storage, which is connected using external Ultra320 SCSI port (DAS). External storage is detected as hdisk2 which ...
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59 views

SCSI queue depth / command queue settings

I two servers with about 100 LUNs presented to each from an IBM V7000 (Storwize). Each LUN has 8 paths - 2 FC ports x 2 FC switches x 2 V7000 heads - so about 800 devices. Devices/paths are managed ...
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1answer
140 views

Recover Data from RAID 1 : Array failed

I have a HP Proliant ML150 server with a scsi raid controller installed. Two disks are configured in RAID 1. My problem is when i start my computer, in the beginning, a message appears that the array ...
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2answers
214 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
114 views

Extra storage space for HP Proliant DL380 G5

I have a HP Proliant DL380 G5, SAS Hard-disk no space left, I am planning to buy HP StorageWorks MSA20 Sata - thus, a total of 6TB area will be formed. I do not know how to do connection server with ...
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3answers
973 views

Symantec backupexec troubleshooting issues with a Dell Robotic tape Library in Windows 2003

I’m running Symantec BackupExec 12.0 on a Windows 2003 server. After I powered down my SCSI tape drive (Dell PowerVault 124t autoloader) it no longer shows up in Backup Exec in the device pool. So ...
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1answer
60 views

Tape drive unusable on 14.04 ESXi VM

The problem I've got an Overland ArcVault connected to my system (actually a virtual machine, with the standalone SCSI card it's connected to in passthrough mode), but it seems like the named tape ...
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1answer
610 views

FreeBSD VMware and CAM status: SCSI Status Error

I'm running a FreeBSD 10.1-RELEASE-p19 on a VPS (VMware). My ISP is experience a rapid data growth, and these messages spontaneous started to show up in our logs a week ago. Sep 25 09:00:50 srv03 ...
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1answer
220 views

Log in to a single LUN of a target with iscsiadm (open-iscsi)?

Is it possible to connect to only a single LUN of an iscsi target when using iscsiadm? I have a target like "iqn.0000-00.iscsi.foo:bar" this target has 1000 LUN's. If I do iscsiadm -m node -l -T iqn....
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51 views

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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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 ...
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10answers
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How do I make Linux recognize a new SATA /dev/sda drive I hot swapped in without rebooting?

Hot swapping out a failed SATA /dev/sda drive worked fine, but when I went to swap in a new drive, it wasn't recognized: [root@fs-2 ~]# tail -18 /var/log/messages May 5 16:54:35 fs-2 kernel: ata1: ...
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2answers
158 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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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
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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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2answers
4k 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
86 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 40MB,...
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63 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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2answers
4k views

HP ProLiant DL380 G4 SATA support?

I'm planning to get a second hand HP Proliant DL380 G4 and setup it as storage server, probably using NexentaStor and setup a ZFS system. But now I wonder does DL380 G4 can be convert or support SATA ...
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39 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
207 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
353 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
434 views

MSA30 Linux CLI Configuration?

Can some one help me shed some light on this please? I have a MSA30 hooked up to a HP Proliant DL380 G4 running SuSE SLES Linux. My question is how do I configure the hard drives connected to be in a ...
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1answer
444 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
3k 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 /dev/disk/by-...
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1answer
27 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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1answer
751 views

Install SAS/SATA backplane in Dell PowerVault 220S

Is the backplane of a Dell PowerVault 220S svc tag 3sdpcb1 (14 drive, 80 pin hot swap scsi) upgradeable to a SAS/SATA backplane & controller card replacement? The unit already seems to be quite ...
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1answer
751 views

windows server 2003 “setup cannot copy the file oemsetup.inf”

I'm trying to install the SCSI drivers for a Dell server with a PERC 4e/si card in it. I can specify the driver via the F6 and load the driver with S procedure, but once I select the partition and ...
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2answers
259 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 09:...
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1answer
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 ...
3
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2answers
968 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
452 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
2k views

Recover data from SCSI hard disk

We've got an old server with SCSI hard disk. The server crashed last week and it isn't exactly known what hardware component is damaged. Since the server is due to be retired anyway we don't want to ...
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1answer
1k 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
249 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 ...