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 ...

learn more… | top users | synonyms

0
votes
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? ...
0
votes
1answer
27 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 ...
1
vote
1answer
42 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 ...
1
vote
0answers
30 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 ...
10
votes
1answer
146 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
44 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
votes
1answer
50 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
votes
1answer
110 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
1answer
53 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 ...
0
votes
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
66 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 ...
4
votes
2answers
82 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 ...
0
votes
1answer
117 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
2answers
25 views

Dell T-420 with Perc 310 controller - how do controller channels map to physical drive bays

The Perc 310 has two SAS controller connectors, SAS-A and SAS-B. Each of these supports which has 4 internal mini-SAS, providing a total of eight lanes of PCI Express. Question is how do these two ...
14
votes
1answer
372 views

Sanity check on 40TB server configuration

I've got 40 years in computing, but I've never had to build a server quite like this one, so this might be a n00b question. I have a client that is going to offer ultra-high def music files for ...
1
vote
1answer
46 views

How to connect a SAS expander like RES2SV240? [duplicate]

I'm afraid this is going to be a very noob question, sorry. I am looking at the RES2SV240 card from Intel. I have never used SAS or an expander, and I'm a bit confused about how it works. First, the ...
0
votes
0answers
20 views

Which RAID C600 Upgrade Keys for S2600CP4 Intel server board to enable SAS features

I need RAID C600 Upgrade Keys for S2600CP4 Intel Server Board to enable SAS features. I am not sure which one shall I use: RKSAS8 or RKSATA4R5?
2
votes
2answers
98 views

HP DL380G6 + MSL2024 LTO6 SAS : Which HBA? [closed]

I'm going to upgrade our backup server and I'd like to confirm that the following specs won't choke after the purchase. It'd be great if you could tell me your opinion Our current setup is: HP ...
2
votes
2answers
85 views

SAS disk and intel motherboard

What kind of Cable shall I use to connect [ http://www.amazon.com/SAS-Enterprise-Hard-Drive-WD1001FYYG/dp/B0090UELTW ] and server board: http://ark.intel.com/products/56334/intel-server-board-s2600cp4 ...
1
vote
1answer
93 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 ...
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 ...
2
votes
2answers
40 views

Cable compatibility: will SAS 6GB/s fallback to 3 GB/s?

I’m just in the process of configuring a server for RAID 1 by inserting an IBM ServerRAID M1015 card and two Seagate ST2000NM0023 SAS drives. Both controller and drives are rated as 6 GB/s. ...
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 ...
-1
votes
1answer
45 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 ...
1
vote
1answer
80 views

SAS IT Mode controllers and SAS Expanders

Lots of semi-related posts, but none that address this scenario. I picked up an LSI SAS1064E-IR based HP Controller. I flashed it with an -IT firmware, and things look somewhat ok. Except that I ...
1
vote
1answer
74 views

Can disk be purchased by user from vender other than Dell and add to Dell PowerEdge R720xd server after the server is purchased?

The following is the price of the 4TB NL-SAS drive offered by Dell for PowerEdge 720xd. 4TB 7.2K RPM Near-Line SAS 6Gbps 3.5in Hot-plug Hard Drive [$663.38] It seems to be too expensive. A similar ...
0
votes
1answer
86 views

Dell H310 RAID controller in PowerEdge 2950 III

Is anyone able to confirm whether the Dell H310 RAID controller will happily live in a PowerEdge 2950 III? It's a PCI Express 2.0 8x card. I see reports of the H700 in the 2950, which is the same ...
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
1answer
82 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 ...
3
votes
1answer
125 views

Format SAS drives HP DL360G6

hoping you can point me in the right direction here. I scored an older HP DL 360G6 and have been having issues installing ESXi. After a bit of searching around a few people suggested completely ...
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 ...
-1
votes
2answers
125 views

High density disk bay rack chassis - why such a big difference in price?

We're looking for a chassis with 45-60 bays for SAS/SATA disks and we found some 60-bay enclosures at ~ $11000 (see here and here for example - there are others as well). However we found this one ...
2
votes
1answer
617 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 ...
0
votes
1answer
61 views

Which controller for external SAS tape drive

We're about to buy an external LTO-4 tape drive for our HP DL380g6 server, and since SCSI is on the way out, we'll buy a SAS drive, probably the HP StoreEver LTO-4 Ultrium 1760 SAS External Tape Drive ...
-1
votes
1answer
49 views

IBM ServeRAID 2 channels SCSI controller compatible with IBM x366 server which use SAS onboard?

I own an IBM x360 server in which I have an IBM ServeRAID 2 channels SCSI controller for which I use the two channels. Channel 1: the server's HDD. Channel 2: IBM EXP300 HDD Enclosure. Will this ...
8
votes
5answers
501 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 ...
0
votes
2answers
61 views

SAS disk error. should I replace my drive ASAP?

When I try to reboot UBUNTU server boot prints that he find "Foreign configuration" on the adapter. When I boot from secondary (/dev/sdc) disk and run fsck it show me some errors on the first disk. ...
1
vote
1answer
98 views

SAS / SAS2… compatible?

Is it theoretically possible to mix a SAS2 controller with a SAS expander? We just happen to have this scenario - the expander (which works fine with an older SAS adaptec controller) is not found and ...
-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 ...
4
votes
2answers
134 views

SAS internal cable compatability

In the office, we've elected to whitebox go with a commodity approach to a certain class of server we'll eventually need a lot of. It's time to consider picking up a few more. It has been a year since ...
0
votes
1answer
44 views

SAS HBA card or integrated with MB?

I need an entry level virtualization server for a few people and I like the Fujitsu line of this kind, but they all seem to have built-in SATA disk interfaces.. I'd like to use SAS disk and apparently ...
0
votes
1answer
84 views

AOC-LPZCR2 Equivalent RAID card

We have just had a 'AOC-LPZCR2 Low-Profile All-in-One Zero-Channel RAID card' fail. Unfortunately, we are unable to source one straight away. Does anyone know of an equivalent card which we could use ...
0
votes
1answer
148 views

PCIe SSD vs SSD vs SAS - which is best for Database?

Since I am going on shipping soon I wonder which generally will mostly boost the database performance ? The bridge question is - which will boost mostly a database which having a lot of random block ...
1
vote
2answers
439 views

How to use SAS Expander with RAID card?

I've doing some researches since few days and I haven't really got an answer to my question. I am in the process of building a huge file server for the company I work for. We bought a server case ...
-1
votes
1answer
146 views

Software RAID for a petabyte storage array [closed]

I'm trying to build my first personal storage area network (flexible downtime, speed is not a priority) to hit 1 petabyte on a budget, and am considering a modification of the Backblaze pod as the ...
0
votes
1answer
160 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 ...
2
votes
2answers
197 views

What cable do I require for SFF-8087 to SAS

I have a HP P410 and two 2.5" SAS Drives, i want to connect both those SAS drives to one port. I know the cable for the P410 is a SFF-8087 and ive seen plenty of adapters searching, but alot of them ...
2
votes
1answer
2k 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 ...
-1
votes
1answer
166 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, ...
2
votes
1answer
128 views

GNU/Linux: SAS-disk detected as /dev/sg7 - not as /dev/sdb

I have just installed a SAS disk into a Debian server. It was detected correctly and everything was fine. Then I moved the SAS disk to a different Debian server, the same hardware model and running ...