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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24 views

Understanding SAS transfer speeds

I've been tasked with building some large storage and i'm first working to expand my SAS knowledge. As i consider transfer bottlenecks and SAS speeds, i can't help but wonder how 12 Gb/s SAS equates ...
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784 views

HP ProLiant ML350e Gen8 v2 Not Detecting Hard Drives

I have tested several solutions but non of them cant detect my 2 hard drives (legacy mode , acpi and raid embended) I have a 2 Dell-Seagate SAS Cheetah 15k,7 hard drives (ST3300657SS) (they are not ...
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4answers
71 views

Do Equallogic PS6010s accept non-EQL firmware disks?

We have a PS6010 which is just out of its support contract. We are looking to give it another lease on life so would like to replace all the drives with new ones. It currently has 16x ...
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1answer
48 views

ProLiant DL380p not recognising HP hard drives on boot

I have two ProLiant DL380p rack mounted small factor servers. I have installed the following drives onto both servers: 1x 240GB SSD drive (Crucial NOT HP branded) 2.5" SATA 7.2k rpm 1TB ...
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1answer
476 views

How to upgrade the firmware of HP SAS expander card without Smart Array controller or Proliant Server?

How can I update/upgrade/flash the firmware of an HP SAS expander card [468406-B21 a.k.a. 487738-001]? I used to do this using Windows and a HP P410 Smart Array controller, however that controller is ...
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0answers
37 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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2answers
80 views

SAS Expander backplane performance drops when more than 8 drives are active?

We are using an LSI 9211-8i raid controller (flashed in IT mode) in a PCI-e 2.0 x8 slot. It's connected to a supermicro SAS 836EL1 backplane with 1 SFF-8087 cable. We have 16 drives installed. When ...
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5answers
869 views

ML350 G5 - upgrade hot swap drives to 6 Gb/s?

I support a non profit. They got an ML350 G5 donated to them and I immediately put it to good use for them :) It came with four HP 300GB 15K SAS drives - and of course, they have all now failed. I ...
6
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1answer
282 views

How do you connect more than 4 drives to a LSI 9361-4i MegaRAID controller?

I’m fairly new to proper hardware RAID having only used it in pre-built server machines before, but on the recommendation of some friends who work for datacentres I’ve bought an LSI 9361-4i MegaRAID ...
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2answers
3k views

Can IBM System x3650 passthrough SAS?

I am looking at the specs and manual for the IBM System x3650. According to the specs a ServeRAID-8k-l hardware RAID comes standard, but there's an option to upgrade to ServeRAID-8k. If I understand ...
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2answers
237 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 ...
3
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1answer
33 views

SFF-8087 cable and connector variations causing fault?

I recently bought a set of 6 cables to connect my LSI MegaRAID card to my Norco-4224 backplane. The connector on both ends is SFF-8087. However, when they arrived, the disks would not be detected. ...
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1answer
31 views

Failing drive in RAID10 array; which degraded state will be least punishing on performance?

Running on LSi 9260-16i, with 16 SAS drives (Seagate Savvio 15k.2). One drive is getting media read errors, so we're going to RMA it out. Which of these is the least performance destroying option in ...
6
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1answer
2k views

replace controller, add second controller, or use expander?

I have a Proliant DL380 G6 that I am re-purposing as a Hyper-V host for a new, off-site data center that will host our DR services. The server currently has a P410i controller with the 512MB BBWC ...
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1answer
47 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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2answers
127 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
55 views

Mini-SAS Connector Issue

allow me to apologize in advance, because I am horribly uneducated in this realm, yet I find myself with this problem: My company hired ProMax to setup all of our networking in our office. One of the ...
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0answers
111 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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2answers
162 views

Unsupported Storage Connection Detected on HP DL380 Gen8

I'm hoping this is the right place to ask. I recently received a new HL DL380 Gen8 server, on which I want to install Server 2012 R2 via Intelligent Provisioning. According to the specifications, ...
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3answers
1k views

Why do servers have SAS instead of SSDs? [closed]

I was wondering why do servers still come with SAS disks instead of SSD disks? I know that SAS are faster than normal hard drives but they are still much slower than SSDs. I think they are more ...
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1answer
227 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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2answers
84 views

1 x Raid card and 6 sata drive over 1 SFF-8087 port [closed]

I have a question regarding LSI00328 LSI MegaRAID SAS 9271-4i Can I connect 6x sata drives to -4i card or I need -8i version
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1answer
37 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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1answer
189 views

Bandwidth with SAS expanders and RAID controllers

Having a RAID controller that has eight internal SATA3 lanes, you can get 6 Gb/s on all eight drives. What if I connect a 24 port SAS expander to an eight port RAID controller, do I still get max ...
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2answers
653 views

Will Intel RES2CV360 SAS Port Expander Work With Adaptec 6805 RAID Controller?

Have both the expander and the RAID controller. Hooked everything together according to the docs on-line, but no drivers are seen. Can't tell if this is just a compatibility issue, or perhaps a bad ...
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1answer
264 views

Steady red light on 2 HP SAS drives in RAID 1

I have a HP ProLiant web server with two HP 300GB SAS SFF 2.5 inch drives (Model: HP 507127-B21). Both drives have a solid red light, however there is no indication within the management software that ...
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1answer
225 views

Why does a low level format take very long time?

I can write ~100MB/s on a particular 4TB SAS drive when it have a file system on it, but a low level format on this drive took >16 hours. That's ~70kB/s. Since there is not filesystem and only zeroes ...
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1answer
94 views

What is a Fibre Channel disk? [closed]

Our NetAPP SAN uses something called "Fibre Channel" disks. What are Fibre Channel disks, and does this mean that I can't replace them with a NetApp SATA or SAS disk?
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2answers
64 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 ...
2
votes
1answer
367 views

Arranging a raidz3 ZFS vdev to tolerate entire JBOD failures?

Let's say I'm going to build a very large 1PB zpool. I'll have a head unit with the HBAs inside of it (maybe 4 port LSI SAS cards) and I will have perhaps 7 45-drive JBODs attached to the head unit. ...
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0answers
31 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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49 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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1answer
45 views

Can disk drives from a PV MD3220i be moved to a PE R420, and vice-versa?

I've read that some Dell hardware (mostly storage enclosures these days) are picky about drive firmware (i.e. Dell certified drives). But I can't find a definitive answer about swapping Dell-certified ...
3
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1answer
143 views

Are FC and SAS DAS devices standard enough?

Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. ...
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2answers
1k views

SAS enclosure doesn't restart - MSA60

I just inherited a HP StorageWorks MSA60 (this is a direct-attach SAS enclosure). I had to move it to another shelf so I turned off the computer which was using it. I also pulled the 2 power cords off ...
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1answer
5k views

Installing Ubuntu 12.04 on HP Proliant DL380e with 1TB SAS Drive

I have an HP Proliant DL380e with a 1TB SAS Drive and I am trying to install ubuntu server 12.04 on it. I have created a RAID array using Array Controller Utility and had a RAID0 logical volume ...
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2answers
35 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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1answer
80 views

Is it possible to use a HP P410 Controller in a ML150 Gen5 server? i.e. is there a cable that interfaces with a Gen5 cage?

Specifically I want to use a SAS card (a P410) and some drives that I have spare in a ML150 Gen5 server. If there is a cable that converts mini SAS to the Gen5 SAS cage connection can someone point ...
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1answer
558 views

HP DL380 G7 using P410 controller with a SAS Expander card

A sever is fitted with a HP SAS Expander card and 10x disks (2x mirrored Arrays). The server is not detecting any logical volumes or physical disks. So is it ok to bypass the expander card and ...
10
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1answer
2k views

Performance Difference SAS vs. SATA?

Can not find that anywhere it seems. What is the expected performance difference in a storage backend scenario that is heavily parallellized in access (like a SAN, Virtualization host storage etc.) ...
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3answers
729 views

Can Dell PE 1950 with SAS Controller take SATA drive? [closed]

I am a programmer (not an expert hardware engineer) trying to build a small hadoop cluster at home (at a cheaper price point) for processing some datasets of interest. I am getting these Dell PE ...
2
votes
1answer
778 views

HP ProLiant with SATA/SAS Drives

I Currently have a DL350 G5. I have 4 74GB SAS drives in RAID that work fine but I tried to add a 1TB WD RED SATA drive for some storage and the RAID controlling isn't giving me an option to create a ...
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1answer
421 views

Upgrade to 3x Samsung SSD EVO in RAID-0 — what type of RAID controller to search for? [closed]

My current configuration is a RAID-0 with three conventional 2TB hard drives. I want to upgrade to three 1TB SSD EVO disks, also in a RAID-0 configuration. Using SiSoftware Sandra, I found out that ...
2
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2answers
2k views

Hyper-V 2012 and P2000 SAS SAN

Hi I am having major problems setting up a Hyper-V 2012 cluster on a P2000 SAS SAN. Running System Center VMM 2012 SP1 I am unable to see any storage to create my cluster. Has anyone had experienced ...
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2answers
395 views

Are there different kinds of Mini SAS to 4x SATA reverse breakout cables?

I have an RPC-4224 case that has 24 bays with 6 Mini SAS ports. I needed a cable to break out one of them into 4 SATA ports, so I went down to my local Fry's Electronics and bought one. The cable came ...
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2answers
315 views

Difference between SAS multilane, direct-attached HDD and expander backplane?

What's the difference between multilane, direct-attached HDD and expander for SAS backplanes? Supermicro chassis description page Direct attached HDD backplane (TQ version), multilane ...
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2answers
15k views

How can I connect a SAS drive to USB?

I have a Dell T710 with Seagate Cheetah 15k.7 SAS disks. If the T710 motherboard dies, I'll need to resort to one of my nightly off-site backups and salvage the journal/logfile from the SAS disk to ...
0
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1answer
659 views

How to perform disk test attached to LSI RAID controller

I have four Seagate ST33000657 SAS drives attached to LSi 9260-4i controller. I want to test them for hw errors and bad sectors, before launching into production. I ve tried SeaTools, but it's not ...
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0answers
64 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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2answers
309 views

Portable SAS Drive (USB/Thunderbolt Interfacing)? [closed]

I have a few spare 2.5" HP SAS SSDs sitting around and collecting dust for about 2-3 years now. They were used for about 1 day in another project that ended rather abruptly. I now have a need to ...