-8
votes
1answer
67 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?
0
votes
2answers
32 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? ...
9
votes
1answer
285 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.) ...
1
vote
3answers
238 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
371 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 ...
0
votes
0answers
49 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 ...
1
vote
2answers
160 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 ...
0
votes
1answer
560 views

Using SATA III SSDs for ZFS pools

I'm thinking of building a ZFS server optimized for random access (PostgreSQL database). I figured that I have 2 options: Use pools consisting of the Crucial M500 960 GB SATA III SSDs. Enterprise ...
0
votes
1answer
79 views

Can proprietary SATA/SAS drives be used in a standard SATA controller

If I take SATA or SAS drives out of a Dell or HP server and install them in a different machine with a standard SATA or SAS controller will they still be readable? Obviously if they are part of a ...
1
vote
2answers
103 views

Connecting SAS drives to Server which supports only SATA

Is there any adapter or connector available to connect a SAS drive to a Server having motherboard which supports only SATA drives. It is ok if can connect it for temporary. I need to transfer some ...
0
votes
1answer
87 views

Connecting SATA 3 to SAS port performance analysis

SATA 3 hard disk can be connected to SAS ports. But If i connect SATA 3 drive to a SAS port then can i get same speed as SATA 3 originally offers or will it be a difference? Will it reduce the ...
0
votes
1answer
89 views

Beginner SAS and SAS2 speed expectations

We have one SAS backplane, without SAS expander, with 8 HDDs and we connect it to the motherboard with 2 SFF-8087 to 4 sas/sata cables. The motherboard supports SAS2 and the SSD supports SAS2. How ...
2
votes
1answer
114 views

Rack Storage - Backplane with 20 SATA connectors or backplane with 5 Mini SAS connectors?

I am comparing two rackmount server chassis (Norco RPC-4220 and Norco RPC-4020, FWIW), which are identical except for the backplane connectors. One has 20 SATA connectors and the other has 5 Mini SAS ...
1
vote
1answer
189 views

ZFS: SAS v SATA - does it matter?

I understand from NEC's white paper, Silent data corruption in disk arrays, that: some SAS drives should have a "T10-DIF" feature to detect silent data corruption; whereas "There is no standard for ...
2
votes
1answer
1k views

What is a maximum useful length of SATA/SAS cable

The server in question is DELL PowerEDGE SC1435. I am thinking about buying a LSI 1068e based card with two internal SFF-8087 ports. I intend to use the machine with external multiple hard disk ...
9
votes
5answers
1k views

ZFS best practices with hardware RAID

If one happens to have some server-grade hardware at ones disposal, is it ever advisable to run ZFS on top of a hardware-based RAID1 or some such? Should one turn off the hardware-based RAID, and run ...
-1
votes
1answer
101 views

SAS SCSI Converter [closed]

I recentely bought a Seagate Cheetah 146GB SAS ST3146755SS 10K Performance 15K RPM Hard Drive from EBAY and do have a computer that supports SAS. The problem is that I need to convert it into a SATA ...
0
votes
1answer
275 views

IBM x3650 M1 SATA support up to 2 Tb

I have an IBM x3650 (M1 [i think because of DDR2 rams]), an as i know it only support SATA hard drvies only up to 1 Tb. Is there any RAID controller firmware/BIOS update which can give the server 2 ...
-1
votes
1answer
177 views

How does plugging in a SATA drive to an SAS backplane affect maximum cable length?

The limit on SATA cable length is 1m, whereas the limit on SAS cable length is 10m. When using a backplane which advertises support for SAS and SATA, with a SAS RAID controller and one SATA drive, ...
3
votes
1answer
286 views

Connecting our first tape drive (SAS) to SATA bus

Our small team is considering buying our first tape drive for backups. However, we are still lacking serious enterprise-grade servers and have to rely temporarily on SATA drives in our rigs. Cost ...
6
votes
1answer
5k views

How exactly does a SAS SFF-8087 breakout cable work? + RAID/connection questions

Please let me know if my question does not makes any sense as I am not sure if I am interpreting it correctly from my thoughts due to my lack of technical knowledge on this. If I am using a ...
2
votes
2answers
973 views

RAID card w/1x mini-SAS connector : how do I physically connect 16 disks?

I'm looking at a MegaRAID SAS 9240-4i Sgl card which has a single X4 Mini-SAS SFF8087 connector. As far as I know, such a connector can be expanded to 4 SATA disks. So, I would know how to connect 4 ...
1
vote
1answer
260 views

Can the Intel C600-series SAS controller RAID SATA drives?

(Sorry if this is off-topic - technically this is a home workstation setting, but is regarding mostly-server technology.) I have a GA-X79S-UP5-WIFI motherboard and four ST3000DM001 drives, and the ...
1
vote
3answers
2k views

Using SATA drives with SAS shared backplane?

Is it possible to use SATA drives when you have a SAS shared backplane to be able to address the drives?
-3
votes
2answers
376 views

Connecting a SAS server drive with SATA USB cable + Converter [closed]

I'd like to connect a SAS drive (ST3600057SS) to my computer via a USB SATA cable combined with a SAS to SATA converter. This doesn't work and I would like to know why and if there's any way around ...
2
votes
3answers
2k views

Can I use a Smart Array P410 controller on a HP Proliant DL 180 G5 server?

This link says the HP Proliant DL 180 G5 server only supports Smart Array E200, E500, P400 and P800 controllers. Can I use a Smart Array P410 instead? Currently the server has only the default ...
2
votes
2answers
455 views

Do SATA disks on an SAS backplane impose cable length limits?

On two Supermicro 847E16-RJBOD1 enclosures, I have trouble accessing SATA disks on the rear backplane with 6gb/s. The only significant difference between rear and front backplanes is total cable ...
0
votes
2answers
273 views

Preventing h/w RAID cards from dropping slow JBOD disks

I'm considering buying a used SAS h/w RAID card for externally attaching HDDs to an HP ProLiant I'm setting up. However, I only require RAID functionality on some of the drives. Theoretically it ...
1
vote
2answers
293 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 ...
0
votes
1answer
102 views

External 2.5" enclosure SATA power only [closed]

we have these mini-SAS PCIe SATA III controllers. Mini-SAS enclosures seem to run about $500, but I can use a $10 mini-SAS-to-SATA adapter cable so then all I need is an external enclosure that ...
1
vote
1answer
2k views

What is the max supported number of SATA devices (using cable adapters) on a Dell SAS 6/iR adapter?

I've got a Dell SAS 6/iR PCI-E adapter. I don't have a multiplier backplane. I'm planning on connecting SATA (non SAS) drives. If I buy cable adapters only (ones that split a SAS connector on the card ...
5
votes
3answers
13k views

SAS vs Near-line SAS vs SATA

I'm unsure about the differences in these storage interfaces. My Dell servers all have SAS RAID controllers in them and they seem to be cross-compatible to an extent. The Ultra-320 SCSI RAID ...
6
votes
3answers
887 views

Dell MD1000 and an x4 SAS connector throughput / layout

I'm trying to get my head around how a multi lane x4 SAS connector works in a DAS system such as the Dell MD1000. I understand that each lane is 3Gbps, and that multiple hard drives can share a lane. ...
3
votes
4answers
4k views

HP D2700 enclosure and SSDs. Will any SSD work?

I've got an HP D2700 enclosure that I'm looking to shove some 2.5" SSD drives in. Looking at the prices of HP's SSD drives vs something like an Intel 710 and even something less 'enterprisey', there's ...
0
votes
1answer
591 views

Difference between LSI SAS3081E-R vs. LSI SAS3081E-S SAS/ATA HBAs

I'm trying to figure out if there are any differences between the "R" vs. the "S" of this SAS controller. As far as I can tell, the "S" is a Sun Microsystems re-branded version. I can't find much ...
10
votes
4answers
2k views

Any experience with SATA SAS Interposer Cards?

Driven by the current price difference between SATA and SAS disks on one side and the potentially bad behaviour of SATA disks in bigger storage arrays on the other side, I have found so-called ...
3
votes
1answer
830 views

Can I mix SAS and SATA2 drives on one controller?

I've read here that I can't mix SAS and SATA2 drives on the same controller - is that really true? I understand I shouldn't mix on the same channel, but the same card!? For example, when I plug my ...
-1
votes
3answers
969 views

Dell R510 backplane/LSI RAID card

I've been tasked to price up and order a new server. My plans are for a Dell Poweredge R510 with the 8 HDD option, an LSI 9265-8i RAID card, two Dell 600GB 15k 3.5" SAS drives in RAID 1, and six Intel ...
3
votes
1answer
372 views

SSD in early 2008 Xserve Apple Drive Module

Pretty much the title: it possible to use a modern, 2.5″ SSD in an Apple Drive Module on a early 2008 Xserve? This would be replacing a 15k RPM SAS drive, and in most places I've looked that HDD is ...
-1
votes
1answer
226 views

Database server is better to have SAS than SATA, also preferable RAID1?

I want to know if it's better to hast DB server by SAS hard disk than SATA hard disk? And it's also better to use RAID1. I don't know much about RAID. If the server is RAID6 default. Can I change ...
0
votes
1answer
229 views

Dedicated server - do SAS disks make a noticeable difference? [duplicate]

Possible Duplicate: What are the merits of SAS vs SATA drives? I am running a linux centos dedicated server. Basic specs are a Intel Dual Core Xeon X3065with 2GB ram and 2 x 160GB Sata ...
2
votes
3answers
2k views

So you really can push a SATA2 disk into a SAS backplane?

There's only one SAS, right? Serial attached SCSI? The female connectors: SATA2 looks like: ------------| |------- And SAS looks : ------------+-+------- For me, the SATA2 male connector looks ...
0
votes
2answers
516 views

Rule of thumb: SATA for storage & serving static content, SSD/SAS for databases?

The question says it all. But, is it true? Can someone explain what's the differentiating factor here (how one type of disk is better than another for a specific purpose)? (FYI, I've tried searching, ...
62
votes
8answers
6k views

How can a single disk in a hardware SATA RAID-10 array bring the entire array to a screeching halt?

Prelude: I'm a code-monkey that's increasingly taken on SysAdmin duties for my small company. My code is our product, and increasingly we provide the same app as SaaS. About 18 months ago I moved ...
1
vote
3answers
822 views

SATA Raid 10 vs SAS Raid 1

I need to setup a small dedi for a few VPS. Obviously the more IO, the merrier. Given these condition, what would you choose? 2 SAS 15k disks in Raid1, or 4 SATA 7.2k in raid 10? Would the answer ...
2
votes
2answers
579 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 ...
1
vote
1answer
472 views

Replacing a PERC S300

The PERC S300 card that came with our Dell PowerEdge T110 servers is Windows only (see here). As a result, we're looking for an alternative that works under Linux. We had planned to use software RAID ...
4
votes
6answers
4k views

Use of 2.5" Laptop Drives in a Server?

We're acquiring several 1U servers with (8) 2.5" drive slots. Although we can use either SATA or SAS, there is a large price variance as soon as you order 16 or 24 of these drives, so we are looking ...
6
votes
5answers
8k views

SAS or SATA for 3 TB drives?

We are looking to purchase new 3 TB enterprise-grade drives and can buy either SAS or SATA models. AFAIK, SAS generally gives better performance than SATA, but searching for benchmarks I found ...
13
votes
4answers
12k views

Anyone seen a meaningful SAS vs SATA comparison/benchmark?

I hear lots about SATA being slower than SAS but I've only found 1 decent benchmark. http://blog.whitesites.com/SAS-RAID-0-VS-SCSI-RAID-0-VS-SATA-Benchmarks__633689244191943184_blog.htm In this, SAS ...