Serial ATA (SATA or Serial Advanced Technology Attachment) is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. Serial ATA was designed to replace the older ATA (AT Attachment) standard (also known as EIDE), offering many ...

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2answers
14 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? ...
2
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1answer
37 views

Xen SATA PCI Passthrough to Ubutnu DomU not recognising disks

I have a Xen 4.1 server with a Debian Wheezy 7.4 Dom0 (hmpyxen01). It has a SATA PCI card that I am passing through to an Ubuntu Precise 12.04 DomU (hmvmtmp01), installed via xen-tools which in this ...
10
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1answer
142 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
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3answers
43 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 ...
0
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0answers
59 views

Linux dmesg errors, motherboard issue? [migrated]

When doing heavy disk IO on my system (16GB RAM, 6 cores, RAID0 PCIe SSD), the system stalls and eventually crashes. Normal day-to-day disk IO is fine, just prolonged read/write such as a database ...
2
votes
1answer
103 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 ...
7
votes
3answers
3k views

Deciphering continuing mpt2sas syslog messages

Summary I have been getting these cryptic messages in syslog since I installed some new hardware and I can't figure out what the problem is, if it's serious, or what to do about it. They're from the ...
0
votes
1answer
21 views

HyperV Eject passthru disk while VM is running

I have a disk that I need to connect as a pass thru for one of my guest OSes, sbs 2011. The guests internal backup program will backup to the disk, which I'm planning to attach to the VMS SCSI ...
1
vote
2answers
636 views

Dell PE 2950 PERC 6/i Controller. How to add 2TB local SATA as a Raw Disk Mapping to ESXi 5.1 VM

Dell PE 2950, PERC 6/i Controller. - ESXi 5.1 installed/Boot from USB drive. 2 x 1 TB SAS drives in RAID 1 - Datastore1.1x 2TB SATA drive set as RAID 0. We wish to host all our VMs from Datastore1 ...
1
vote
2answers
222 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 ...
1
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2answers
92 views

Remove sata drive while running?

I have a hyperv 2012 r2 server, and the case has two bays where you can open a drawer and slide in a bare SATA drive. Theres a data and power connector at the back of the bay with cables to connect ...
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0answers
23 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
65 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
2answers
39 views

Attaching SATA device disturbs boot order

I'm running a Supermicro X7DCA board in a NAS server. Whenever I plug in a sata disk the boot sequence goes out of order. This is a problem, because it is running headless. I've had this problem ...
0
votes
1answer
107 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
61 views

LSI Megaraid 150-6 as regular SATA controller

I have an old but reliable server board that does not have any SATA ports on it. Also i have LSI Megararaid 150-6 (with latest firmware) which i want to use as ordinary "dumb" SATA controller. I ...
1
vote
1answer
139 views

Proliant DL320G5P, Embedded RAID controller: Windows installation shows phisycal disks, not logical drive

I am installing Windows 2012R2 on Proliant DL320G5P, with the Embedded SATA RAID controller. I have 4 disks, with two different RAID 1 (mirror) arrays. I have a "strange" situation: Windows ...
0
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0answers
37 views

ML310 Gen8 SATA Controller losing settings

We have purchased a couple of ML310 Gen8 with Sata Drives. They have both lost their raid controller setting. We just have to go back in and set the drive back to the array and all is fine. Anyone ...
6
votes
1answer
3k 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 ...
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votes
2answers
47 views

Options for SATA ports on motherboard for Files server [closed]

I am planning to build a big file server. (Windows or FreeNAS). I need at lease 300T of space. what options do I have to RAID all disks together? I mean on physical level what kind of connection ...
14
votes
8answers
47k views

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: ...
0
votes
1answer
63 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 ...
0
votes
0answers
35 views

Sending a hard reset to a SATA drive

How can I force a reset (either a COMRESET reset or a hard reset) on a SATA drive directly connected to a Linux system.? Trying sg_reset doesn't work, nor does hdparm -w.
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5answers
136 views

Using Hot swap drive to backup on daily basis

Hot swapping and hot plugging are terms used to describe the functions of replacing computer system components without shutting down the system. In all the articles it was mentioned during some system ...
1
vote
2answers
55 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
3answers
145 views

Does software RAID-0 really improve performance?

I am going to lease a server and I have two options, SATA or SSD, I decided to save the money and go for the SATA option. But I do not need all that storage they are giving me! So I thought MAYBE I ...
0
votes
1answer
48 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
2answers
330 views

DL140 G3 HP Embedded SATA RAID Controller, max 750 GB drives. Really?

I have a DL140 G3 and according to HP's documentation the max capacity SATA drive I can put on the HP Embedded SATA RAID Controller is 2x750GB. If I put a 2TB drive in here will something terrible ...
-1
votes
1answer
44 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
0answers
52 views

2950 internal backup SATA drive

We have a Dell 2950 II with 4 76GB drives in a RAID 10 configuration, running ESXi and 5 virtual machines. The RAID controller is Perc5/i. There is a low transaction rate, so this gives us minimal ...
1
vote
1answer
196 views

How to make Solaris rescan disk info after hotswap?

I'm running a SmartOS-based ZFS NAS, with a bunch of SATA disks directly connected to the logic board (no fancy disk controller / backplane or anything). A 1.5 TB disk in my zpool recently failed. ...
0
votes
0answers
30 views

Will any SFF-8087 work with a IBM M1015 controller?

I'm planning on buying an IBM M1015 SATA controller (I'm going to run it in IT mode.) I was hoping to use something like this ...
1
vote
1answer
202 views

HP ProLiant DL180 G6 SSD upgrade (sata 3)?

We've currently got a HP ProLiant DL180 G6 server with a Smart Array P410i raid card, and 8 HDDs running off it. We also just bought a new SATA Intel SSD drive to expand the server, that we're ...
3
votes
1answer
119 views

FreeBSD 9.2 shows SATA3 drives as SATA2

I'm running FreeBSD 9.2 on an Intel S2600GZ server board with 4 Intel SSDs. Both the server board as well as the disks are SATA3 capable. However, FreeBSD seems to think they are SATA2. Nowhere in ...
3
votes
1answer
154 views

Using consumer grade hard drives in a server

My company needs to upgrade a couple of (very) old servers we are currently running, but we are kinda strapped for cash. We got a great offer on a pair of HP DL360 G6 servers, but the hard drive cost ...
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votes
1answer
52 views

What are the pros/cons of software raid made up disk connected over SATA and others over USB? [closed]

I would like to use RAID1 with 1 SATA disk and 2 USB disks PS: This is an ARM board (cubietruck) with only 1 SATA port and 2 USB ports. PS2: The OS boots from a SD card :) PS3: The setup does not ...
1
vote
0answers
135 views

Proliant dl 180 g6 install normal SATA drives

I have a Proliant DL180 G6 with problems in the P410 controller. I want to instal normal SATA drives in the server. I see the mother has 4 SATA slots but I can´t find how to power the SATA drives ...
0
votes
2answers
45 views

Dell PowerVault MD1000 + PN939

I have a Dell PowerVault MD1000 with all hard drives damaged. I want to know if it is possible to replace the SAS drives with SATA drives + PN939 or similar interposer. I know that SATA drives are ...
8
votes
3answers
25k views

SAS vs. Nearline/MDL SAS - What is the difference?

As subject I guess, looking at SAN's and most vendors offer 10k or 15k "proper" SAS drives, many also offer 7.2k MDL/Nearline SAS drives. Does anyone have an authoritative explanation of the ...
8
votes
5answers
491 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 ...
2
votes
1answer
81 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
113 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 ...
0
votes
1answer
132 views

Can I use a RAID card with chipset SIL3124 with no driver?

I have a software RAID card with a SIL3124 chipset. (This one). As you configure the RAID via BIOS, is it possible to use this card with 3 disks (RAID 5) with any OS without installing any driver on ...
2
votes
1answer
611 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 ...
2
votes
2answers
578 views

What does Embedded SATA Controller : ATA mean?

I have a Poweredge R510 server with a PERC H700 Integrated RAID controller that is exhibiting slower than expected disk speeds (RAID 1 and RAID 10 arrays) and I'm looking at the configuration of the ...
0
votes
0answers
17 views

AHCI and hotplugging

How do I know when a SATA AHCI controller supports hotplugging (for servers running Linux)? Apparently, whether AHCI is enabled or not doesn't mean everything. Can I query the driver in /sys for ...
1
vote
1answer
241 views

hot plug sata to ESXi 5 server

Is it possible to hot plug an eSATA drive to an ESXi 5 server? I'm exploring backup solutions and hoping to hot add a datastore, copy my VM's over, then hotunplug.
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 ...
-1
votes
1answer
76 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 ...
3
votes
3answers
85 views

How to connect SATA disks to copy large amounts of data from them to HP server running CentOS 6

We have an HP Proliant DL320e running CentOS 6. We will get SATA hard disks with data in the formats NTFS, FAT, HFS and HFS+ from which we would like to copy the files to the server (read-only), ...