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

1
vote
3answers
779 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 ...
1
vote
4answers
2k views

Will any SAS drive work in a Dell PowerEdge server?

If I bought a Dell 2950 or 2650, for example, and it has no drives in it (from say an auction). Will any SAS drive I get work in it? I ask because they vary so much in price. Some drives are $150 ...
1
vote
4answers
3k views

HP smart array P812i and storage works enclosure D2700 BAD PERFORMANCE!

I have HP DL360 G6 with Smart Array P812i and Storage Works D2700 enclosure. Enclosure has 25x148GB 15K SAS 6G drives in RAID10 mode. P812i has 512mb cache (50% read/50% write) Crystal Disk mark ...
1
vote
4answers
943 views

Dell 2.5" SAS Disk Caddy Compatibility

Does anyone know if the 2.5" SAS Dell Hotswap caddys from the new R610's are compatible with those from the 1950's. They are listed as seperate part numbers, but I am unsure if they are physically ...
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?
1
vote
2answers
545 views

Shrink an HP Smart Array on a P400

I just started consulting for a new client and one of 6 hard drives in their server's SAS array failed. Going over the options of replacing the drive, they didn't like the thought of spending about ...
1
vote
2answers
286 views

Adding nearline SAS disks to a controller with SAS disks

I have a Dell Poweredge 840 server that currently has a pair of hot swappable 146Gb SAS disks attached to a SAS 5IR controller, configured as RAID 1. I have two spare slots to add two add more ...
1
vote
1answer
2k views

Can I connect a SATA III drive to a SAS controller and get the SATA III performance?

Can I connect a SATA III drive to a SAS controller and get the SATA III performance? Will I see slower performance from the SATA III drive by using a SAS controller than a SATA III controller?
1
vote
2answers
1k views

SAS vs SSD Performance

Hi does anyone have any input on how a SAS 15k RPM drive would perform compared to a sata based SSD drive, assuming its using the latest verison of sata. These drives would be in a 4 drive raid 10 ...
1
vote
6answers
2k views

sata and sas on the same machine

I know you can't mix SATA and SAS in the same RAID configuration, but is it possible to mount a SATA drive on the same RAID controller as its own logical drive? If not, what do I need in order to ...
1
vote
2answers
78 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
vote
2answers
492 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 ...
1
vote
3answers
1k views

SSDs or 15k sas for server OS / application drive?

I'm thinking about upgrading the OS / application drive for an HP DL 580 G5 running windows server 2003 64-bit. We currently use 3 75GB 10k rpm SAS drives in RAID 1. The server is mainly used for ...
1
vote
2answers
230 views

When ordering SAS replacement drive, does the hot swappable enclosure matter?

I have a dell PowerEdge and need to replace one of the SAS drives in it. I noticed the supplier I order from does not sell a specific "DELL" SAS replacement drive, but they have what appear to be ...
1
vote
2answers
663 views

SATA SSD in Dell Server

I have a Dell R815 (PDF LINK), which has 6 2.5" bays. I would like to put some Intel X25-E in the spare bays, but have been cautioned that they may not fit since they are SATA and the bays are ...
1
vote
1answer
451 views

PCI-E HBA on only PCI-E x16 slot on motherboard?

I read a post maybe last week that said you can't put a HBA card on the only x16 slot on motherboard that doesn't have onboard video. Is there any truth to this? I have a Gigabyte GA-965P-DS3/e6400 ...
1
vote
2answers
244 views

Faster to connect single/direct drive to motherboard or RAID controller?

I have a PERC 5/i RAID controller currently hosting two drives in RAID 1. I am about to add a third drive in "direct" mode, just a normal physical volume. Would performance be better if the drive is ...
1
vote
2answers
117 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 ...
1
vote
1answer
94 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 ...
1
vote
1answer
157 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
vote
2answers
736 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
vote
1answer
172 views

Using both expanders in HP D2700

I am considering purchasing an HP D2700 for use with SSDs (Samsung Pro 840's), for use in realtime playback of high resolution images. The D2700 has two I/O modules (which I assume are the actual SAS ...
1
vote
1answer
111 views

Can I use an HP Smary Array SAS Controller Card In Non-HP Server? [duplicate]

Possible Duplicate: Proliant raid controller in a PC There are a bunch of cheap HP Smart Array SAS controller cards on ebay and I'm wondering if they will work with non HP servers ...
1
vote
1answer
152 views

Do 10m external SAS cables work?

According to the Wikipedia page external SAS cables are specified for up to 10m length. However, I found it pretty hard to actually find places that sell cables of that length. This made me wonder: ...
1
vote
2answers
1k views

Dell MD3000, MD1000 and 2950

I have a Dell 2950 with MD3000, MD1000 ; Suddenly the I have lost all drives on both of the enclosures and all drives on the MD3000/1000 are blinking, but only ONE Light on each disk, not 2 Lights. I ...
1
vote
2answers
428 views

Can we “add” more SAS ports to an existing backplane?

We have a 3U Supermicro chassis with 16 bays on a SAS expander backplane. We have 15 of the bays occupied with hard drives at the moment. We would like to add two more drives to the backplane, but we ...
1
vote
1answer
1k views

Dell R910 with Integrated PERC H700 Adapter

I am in the process of designing an architecture based around a single Dell R910 server running Windows Server 2008 Enterprise. I would like the server to have 8 RAID1 pairs of spinning disks, so I ...
1
vote
1answer
2k views

Connecting a Direct Attached Storage array to multiple servers

Is it possible to connect multiple servers to the same Direct Attached Storage array, something like the Dell MD1200 or MD1220? I see from the specs that each one of these arrays supports two ...
1
vote
2answers
1k views

Need help finding a SAS HBA controller for an IBM LTO 4 Tape Drive

I've got an older IBM x3200 M2 Server (MT: 4368) and I recently acquired a used internal IBM LTO 4 tape drive (FRU: 45E1125). The back of the tape drive requires an Internal SAS 29 pin connector ...
1
vote
4answers
380 views

Do I have to buy a SAS hd from Dell to work with a PERC 5 in PE1950

Is it true that for SAS hd to work with a PERC 5 controller it must have a special firmware on it put in by Dell which forces you to buy a hd only from them. The hd that came with the server is a ...
1
vote
4answers
646 views

Stripe and block size for a RAID0 array

I'm looking for a recommendation on block size and RAID0 stripe size. We have a RAID0 array consisting of six SAS drives. The array is a workspace for SAS programs (I know, the various SAS ...
1
vote
1answer
179 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
1answer
403 views

Using 2-port LSI 9286-8e card to control 24 SAS HDDs

I would like to rely on a RAID-on-chip solution to control 24 SAS hard drives in a direct-attached environment. How would you approach this to get best bandwidth given that I'd like to spend less ...
1
vote
2answers
263 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
vote
1answer
69 views

Does the order of SAS drive matter when installing old drives?

I have an old IBM server with 12 hard drive bays, 4 of which are used (SAS 72GB drives), and configured in a RAID 1 array. The server will be sent away for repairs, when it comes back, do I need to ...
1
vote
2answers
3k views

HP StorageWorks MSA60 SAS attached enclosure: how to manage online on Windows?

We have a HP StorageWorks MSA60 SAS attached enclosure, with 12x1Tb SATA disks, connected to a P800 controller. Until now, they were used with a Linux server under the control of an external company. ...
1
vote
3answers
563 views

Migrate zpool to new SAS controller

Long ago, we bought an Adaptec 31605 under the impression that: a) it could do true JBOD, and b) it was well supported on OpenSolaris. Turns out both of these were incorrect. I'm trying to get my ...
1
vote
2answers
1k views

What is a Linux device name for RAID of sas drives?

I have a RAID1 using Promise FastTrack TX2650 consisting of 2 SAS drives. What is a Linux device name for them? Like sda is for first sata drive. I have Windows server so I can't look it directly but ...
1
vote
1answer
678 views

External mini SAS to external mini SAS (x4 vs x8)?

I'm ordering an Enhance Tec E8 external harddrive enclosure with with a Mini SAS 8088 connector. I plan to use 8 drives in a RAID 5. The RAID Controller I'm looking at says it has 2 x4/x8 hybrid ...
1
vote
2answers
2k views

Does anyone know if “SATA II” drives are compatible with a Dell SAS 5i/R?

I want to buy some cheaper HDs for our server (it will have practically zero HD access) but I plan to put them into a RAID 1 config, just for peace of mind. Our server is a second-hand PowerEdge 860, ...
1
vote
2answers
290 views

How many disks to use for eight channel RAID controller

I have a 3ware 8 channel SAS controller and a back plane extender (also 8 channel) which can take 16 drives. I will be creating a single RAID 10 volume. I know that adding more drives has positive ...
1
vote
3answers
123 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 ...
1
vote
1answer
81 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 ...
1
vote
1answer
127 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
127 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
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 ...
1
vote
1answer
453 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 ...
1
vote
1answer
218 views

HP P410i as online spare

Is it possible to have dual P410i SAS controllers and use one for a online spare? I am fairly new to HP servers and I will be setting up a new G7 for production use. I have been reading about HP's ...
1
vote
1answer
471 views

SAS controller on Dell power edge 2950 server

My knowledge on Dell server is growing daily, however there are many areas where I still require assistance. For example, Our institution recently purchased a LT2000 tape library system. This also ...
1
vote
1answer
195 views

PERC 6i With external Enclosure Raid Questions

Okay so I am buying some used hardware on ebay and found a few poweredge servers for a good price. These servers come with a PERC 6i card and 4x 146gb internal SAS drives. I want to purchase a 8 Bay ...