Serial Attached SCSI (SAS) is a computer bus used to move data to and from computer storage devices such as hard drives and tape drives. SAS depends on a point-to-point serial protocol that replaces the parallel SCSI bus technology that first appeared in the mid 1980s in data centers and ...

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627 views

SAS drive to SAS/SATA backplane then SATA cables to SAS/SATA RAID card?

I just got a Supermicro chasis: http://www.newegg.com/Product/Product.aspx?Item=N82E16816101241 That has a backplane that supports SAS and SATA drives but the backplane has SATA ports to be ...
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2answers
643 views

Using an SAS Expander with a SAS Controller of a different brand

I'm planning on assembling a server, and I'm just wondering if a SAS expander by IBM (such as this one) would allow me to use the RAID and other features (Battery-backed write-back caching) of a SAS ...
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2answers
256 views

LSI MegaRaid - Image Drive from Failed RAID

I had a power failure and my LSI MegaRaid 3 disk SAS RAID 0 failed. My attempts to recover the RAID have also failed. I plan to rebuild the array and go with RAID 5 and add another SAS disk. ...
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2answers
187 views

Wiping hard drives in an IBM DS3512

I have an IBM DS3512 RAID storage device, which I'm planning to sell. How would I reliably wipe my data off of all the hard drives? As far as I can tell, it abstracts away all direct access to the ...
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2answers
43 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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344 views

Dell PowerEdge 1950 Drive Bay not showing in SAS Configuration Utility

We have a Dell PowerEdge 1950 in RAID 1. Recently, the drive in Bay 0 began rapidly blinking green (I'm guessing twice per second, indicating "identifying drive"). When I open the SAS ...
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2answers
622 views

Accessing data on SAS drives if server fails

If my server goes down, how can i access the data on the SAS drives? I don't have another server to plug them into, and even then connecting the drive to a different controller (while keeping the ...
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2answers
635 views

MegaRAID SAS 8208XLP

I'm just wondering whether anyone knows if I can use a Debian distro with the MegaRAID SAS 8208XLP controller. Currently at the moment LSI only supply drivers/support for RHEL/CentOS but I was ...
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2answers
115 views

Is it ok to run 15k.6 and 15k.5 SAS disks in a SAN together?

I have a SAN (HP MASA 2012) running seagate Cheetah 15k.6 drives. One has failed and I have a replacement drive that is the same except for it is a 15k.5 drive. Is this ok to run in the SAN? What are ...
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1answer
238 views

Cabling for SAS drives in a Dell T420 with Perc H710

After having purchased a Dell T420 with SATA drives and without RAID, and discovering this was a mistake for performance reasons, I'm obtaining a Perc H710 PCI card and SAS drives. Now I'm stuck with ...
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1answer
24 views

HP ProLiant SE326M1 not booting from LSI SAS 9211-8i

I have taken out the old RAID card in my HP ProLiant SE326M1 server and replaced it with the LSI SAS 9211-8i HBA. I then installed Nexenta community edition onto three of the drives that are attached ...
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1answer
224 views

Additional Storage Options for Hadoop HDFS Nodes

We have a small production Cloudera distribution Hadoop cluster(14 nodes, but growing). As we have expanded our usage of this cluster we have found that disk storage is our biggest blocker and ...
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1answer
51 views

IBM BladeCenter S: How to configure new SAS disks

I have an IBM BladeCenter S, and I have added two new 450GB SAS disks. I want to configure the disks as a RAID 0, and assign the new disks to one of the servers in the Bladecenter. When I connect to ...
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1answer
211 views

How to make Dell PowerEdge R410 boot from two hard drives?

I have a Dell PowerEdge R410 with two SAS drives connected to the SAS controller and I would like that both of them can be in the boot sequence tried to boot. I would like to use md software RAID-1 in ...
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1answer
76 views

How to enable SAS-12 on LSI 9361 RAID controller

By default, this SAS-12 controller runs with SAS-12 SSDs at SAS-6 speeds. How to unlock SAS-12?
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1answer
588 views

How does loss of DWORD synchronization affect the health of an SAS disk?

I tried to get more information from the error log of an SAS disk by running the following command that prints values and descriptions of the SAS (SSP) Protocol Specific log page. # smartctl -d scsi ...
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1answer
669 views

New HDD swap in SAS 6 ir shows it is missing?

SETUP: Dell Poweredge T410 with Windows Server 2003, SAS 6 IR Raid-1. Both the original drives were Dell Certified Seagate Barracudas for enterprise, 250gb. The new HDD is a Seagate Barracuda 500gb, ...
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1answer
140 views

Supermicro x8SAX support

Does a Supermicro x8SAX support SAS drives? I looked through the manual but am not seeing where this is mentioned. I want to set up on board raid 1
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1answer
598 views

Monitor SMART Values of a SAS/SCSI drive with Munin

I'm trying to monitor my two SAS drives using the SMART Tools Plugin for MUNIN. On SATA drives its no problem, all SMART values are being shown. It seems that smartctl doesn't output valuable SMART ...
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1answer
316 views

ASUS PIKE 6480 doesn't work with debian?

I have DIYed an 1U server with [ASUS Z8NA-D6] motherboard, PIKE 6480 extended RAID card, and four SAS hard disk. And I can find this extended card's module in the linux kernel called mvsas. But fail ...
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1answer
233 views

ATTO SAS-attached RAID 5 array performance issues on Server 2003

We have an ATTO R380 SAS RAID controller in a Windows Server 2003 HP DL-160 server with 8 700GB Seagate 7200.12 drives. It's configured as a RAID 5 array. ATTO Config says all drives are healthy and ...
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0answers
138 views

Dell r730 + Dell 12Gb SAS + Centos 7 + netvault 9.2 quantum superloader 3 not found

In the above configuration Netvault does not find the library attached to the sas controller. What driver should I see with lsmod for the SAS card? I have: ... mpt3sas 195379 0 ...
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0answers
222 views

HP Proliant ML350 G5 - smart array initializing

I have a big problem with a HP ProLiant ML350 G5 with 2 SAS HDD 146Gb : it start with the message : "Slot 0 HP Smart Array E200i ... initializing" without any error message. if I test the HDD with ...
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0answers
159 views

How to change SAS address on Expander

I have the following setup - two supermicro backplane attached to one controller LSI SAS 9207-4i4e and unfortunately cannot access the disks, during boot there are disks only in one backplane, the ...
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0answers
91 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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0answers
215 views

SAS RAID Card not accepting disks

I have just purchased a Dell 6/IR SAS RAID card for a Dell SC1435 Poweredge Server that I bought a few months ago on eBay. When I got it, the SAS RAID card fitted (a 5/IR) was faulty and it was ...
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0answers
595 views

LSI 9211-8i won't boot in KVM

I'm running ubuntu 11.04 with an LSI 9211-8i in IT mode with the latest firmware (10). I'm using KVM with VT-d enabled to pass the entire PCIe device through to the guest OS. I have the device ...
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0answers
109 views

SUN x4600 SAS disk seems to be verry slow

I'm using SUN x4600 with 64GB ram and 2 SAS 146GB 10krpm with Solaris 10 One told me, that the system seems to be slow, so I did a iostat -xtc 5 2 which showed for a long period of time only 4-6000 ...
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0answers
880 views

SAS vs SATA vs SSD: How to measure performance difference between SATA and SAS?

SAS drives can address multiple IO operations from a single platter revolution if the data happens to be where the head is already positioned. How can you measure whether this actually makes a ...
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0answers
9 views

I am trying to deploy SAS ECM webapp over Weblogic Server, but I am not able to start this app and getting below error in error log

I am trying to deploy SAS ECM webapp over Weblogic Server, but I am not able to start this app and getting below error in error log <Jun 29, 2015 11:44:12 AM GST> <Error> <Deployer> ...
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11 views

LSI SAS 9211-8i not showing drives from HP SAS Expander

I am trying to boot from one of the HDD's attached to my LSI card however I cannot as it does not find the bootable drive. I have selected the card as a boot device in the BIOS. When I use Ctrl + C to ...
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92 views

Is there a way to disable or hide SAS drive on LSI SAS 3008 controller?

I am setting up Dell Precision 7910 workstation that has LSI SAS 3008 controller and 2 SAS drives connected to it. It came with Windows 7 installed on drive with smaller drive number (0x09 on LSI bus ...
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0answers
32 views

FreeBSD disk device names/targets on LSI SAS9211i (IT)

I have a machine with an LSI SAS card (8 SAS/SATA ports) with 8 drives that were initially named da1-da8. The numbering stayed consecutive (first drive -> da1, scbus3 target 0 lun 0, etc.) until I ...
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65 views

poweredge 1950 iii disk options

I have a pair of poweredge 1950 iii boxes which I use for a VMware lab. They are loaded with 64 gb of ram (I discovered that this is actually supported), a pair of quad core cpus, and a pair of 300gb ...
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162 views

SMART output - what's the significance and meaning of “verify” errors from smartctl -a for a HDD

Does anyone know the meaning of "verify" errors listed in the output of smartctl -a (or more precisely smartctl -l error), as well as their significance, if any, in trying to evaluate the health of a ...
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0answers
88 views

SATA III HDDs not working on SATA II RAID HBA

I would appreciate any help with this. We have Sunfire x4275 disk server with Sun StorageTek SAS RAID HBA and trying to get working these disks: WD RE 4TB Enterprise SATA III (WD4000FYYZ) Sun RAID ...
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0answers
406 views

How is the boot order of SAS drives determined?

This probably seems like a simple question, but hear me out. Here's the scenario that caused me to ask this question, as this is not so much a "how to" question but a "why" question: I was trying to ...