SCSI, SAS Vs SATA II Reliability
Apr 11, 2008
is it really worth the money nowadays to put in SCSI or SAS instead of SATAII (single disk, non-raid here), IF reliability is the only concern (i.e. NOT i/o performance) during the usual 3 year life time of a server?
Actually, I was pretty amazed by the sata reliability, in the past 3 years the only hdd failure was two sata on a mismatched mobo, which didn't support SATAII (a lot of read/write error, eventually died). Although we have 0% scsi and sas failure.
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Oct 26, 2009
Maybe what the advantages/disadvantages are of each in regards to a web hosting configuration?
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Jun 11, 2009
about SSD vs SCSI vs SATA HDDs?
I heard that SSD are slow in writing, but fast in reading.
is this true?
80GB Intel X25-M SSD is the model i am looking at.
Is this HDD recommended on servers? will this perform better then SCSI or SATA RAID10?
how this works, tell me more about writing
eading speeds (on SSD) etc.
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Apr 30, 2008
what is the benefit of scsi upon a sata hdisk
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May 13, 2008
I wonder which drive give the best performance? Look like they all have the same 15000 rpm. :d
Any experience?
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Dec 28, 2007
I currently have a Dell Poweredge 2650 from a few years back, it is running...
2x Xeon 2.4ghz 512K
3GB DDR266 RAM
1x73GB SCSI
Back in the day this system cost $2000, now it's not worth close to that.
So my plans were to dump this bad boy as an SQL server, seeing it has the SCSI backplane and 3GB of RAM, and SQL usually doesn't need as much CPU as a web server.
Now my question, would it be better to use this server or would it be better to build a cheap Core 2 Duo with a RAID0 array with a few SATA drives?
Before you start going off on RAID0, it doesn't matter to me because I am using clustering/failover so data will not be lost and no downtime will be received if the array fails.
Basically what I want to know, is it worth it to keep this server and build upon it or would it be better to sell this server and look into spending an extra few hundred to build a new system with SATA RAID.
I'm going by price/performance rather than reliability as I am using failover to let you know once again .
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Sep 2, 2009
I am looking for something like this:
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To work on an HP ProLiant DL360/380. All I know is they are SCSI U320 drive bays, or that is the type of drive they take. Can anyone provide any insight on what may work? We are trying to get a more cost effective way to get more storage into a server. The largest SCSI drive I can find is 300GB for $200. You can get 2TB drives for that much these days.
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Oct 26, 2008
I'm going to use it for a massive SQL database driven site.
Was wondering if SA-SCSI 10K RPM is far away better than Raptor SATA 10K if combined with quad core processor and 8GB RAM?
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Oct 2, 2007
For building a house for, ie, 30 VPS, what kind of disks are you using? normal SATA? Raptor? SCSI?
I am going to use Quad-core CPU with 4-8GB RAM, but still wondering about the disks
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Aug 11, 2008
Is it worth to pay $75 for 147GB SA-SCSI 15K RPM rethar than free 250GB SATA II?
I mean is it very big differance in speed?
Can clients feel that?
If the box is Single Processor Quad Core Xeon 5310 - 1.60GHz (Clovertown) - 1 x 8MB cache from softlayer
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Apr 17, 2008
Within 2 servers below, what is faster than:
Server 1:
Primary hard driver: 73GB SCSI 10k (for system, database...)
Secondary hard driver: 160GB SATA (for /home/ directory)
Server 2: 2 x 160GB SATA RAID 1
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Sep 11, 2008
Would having a 15k rpm SCSI HD (vs 7200rpm SATA) provide significant improvement for a web server only running php scripts (the scripts are small in size, they just make DB calls to another server and return the results)? What if eAccelerator was installed?
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Jun 20, 2008
1) what is the command to find out what processor is installed on the server
2) how do i find out what type on hdd i have sata or scsi?
whats the ssh command to find these two things out?
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Dec 11, 2007
Planning to buy a server from softlayer, adding a single 300gb 15k scsi drive costs 100$/month and adding 4 250gb sata drives with raid-10 costs 90$/month
Which one would you pick up and why?
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Jan 14, 2008
So I've just got a server with 2xSATA raid 1 (OS, cpanel and everything in here) and 4xSCSI raid 10 (clean).
Which one do you guys think will give the best performance:
1. Move mysql only to 4xSCSI raid 10
2. Move mysql and home folder to 4xSCSI raid 10
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May 23, 2007
Just curious what your thoughts are on performance:
2 SCSI Drives 10k w/RAID 1
or
4 SATA 10k w/RAID 10
Prices are not too different with 4 drives just being a tad more.
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Dec 19, 2008
about the hd,there are two options, the first one is four 7200rpm sata to do raid 10,
the second one is two 10000rpm sata to do raid 1, about the performance, which one will be better?
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Jul 3, 2008
I'm currently in the process of ordering a new server and would like to throw another $50-$70 at the default SATA II 7k 250 GB to increase performance. The server will host a site similar to WHT (php, mysql, and some forum traffic ).
There are three options I can get for the price:
1. Add another SATA II 7k 250 GB and set up RAID 1
2. Add a 73GB 15k RPM SA-SCSI and put mySQL on it. No RAID.
3. Toss out the SATA II 7k and take two SATA 10k 150 GB instead. Put mySQL on one of them. No RAID.
Please keep in mind that the question is budget-related (I know I can get more if I spend an extra $200 but that's not what I want ). Which of the above will make me happiest?
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Jul 26, 2009
Do any of you know the best way to build a high reliability e-mail system?
I currently have Interworx as the default Control panel but are happy to change to Cpanel or otherwise. The iworx HA is not that good as if the cluster manager fails you loose everything.
I guess my only option is to do what most companies do and hope for the best - but have a good disaster recovery plan.
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Apr 3, 2007
to colocate a 1U in the DC metro area for $100/month for a small non-profit I work with. The service necessary is pretty basic -- 1Mbps or so would do (preferably unmetered so we're not on the hook for overage charges), 1 or 2 IPs would be fine, and the only real service necessary (besides steady power and connectivity, of course) would be the occasional remote reboot and 24/7 facility access.
I've come close to settling on Crosslink Internet (web site at www dot crosslink net, silly system won't let me post the URL directly because I'm new), because they're the only place I've found that can meet that price point. Before I commit, though, I wanted to hear from you guys:
* Are they a reliable ISP? They sound sort of low-budget over the phone, and while that's not necessarily a valid indicator of reliability, it makes me nervous.
* Are there any other decent ISPs in the Northern VA vicinity that could meet this price point that you guys would suggest over Crosslink?
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Jun 12, 2007
I currently have a Signature VPS with Servint and although I have found their customer service good and am getting concerned about my VPS's reliability. This is the only VPS I have experience with.
At the beginning of the year I was experiencing downtime at least once every couple of weeks and for at least 20 mins each time. Sometimes my VPS was down for over an hour. Most of the time the explanantion I received was a "Kernal Panic". Then for the last month and a half things have been good with no downtime, until today when my VPS went down again for about 50 mins.
So here I am asking what is normal downtime?
Is the downtime I am experiencing the norm and would I get the same reliability from any provider?
Would a dedicated server tend to be more reliable than a VPS?
I am considering moving to a dedicated server at LiquidWeb, not because I need the resources but I am wondering if reliability would improve. I am willing to pay for reliability! Any advice as to whether this would be a good move?
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May 1, 2008
I would really like to know which hard drive brand you have had the best success with in regards to server hard drive reliability. Is it Seagate or Western Digital? Or is it one of the other brands? Please vote. This poll is specifically regarding SATA2 hard drive experiences in servers. Please do not factor in SCSI hard drives.
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Oct 3, 2007
In order to increase the reliability of a audio streaming service I am thinking to take the action I describe below.
1. Buy two Windows VPSs with WMS installed.
2. Register a domain name (i.e audiostream.com) with 4 nameservers: ns1.ip1_vps1, ns2.ip2_vps1, ns3.ip1_vps2, ns4.ip2_vps2.
3. Create all publishing points (streams) on both servers.
Normaly VPS1 should serve all clients. In case VPS1 goes down, VPS2 should jump in and serve all clients-connections. As soon as VPS1 becomes available (ns1 & ns2 start responding again), VPS1 starts serving all new connections.
Load balancing or any other kind of advanced load, traffic, etc management is not important.
Then we have the following cases:
1. VPS1 is down , which means that VPS2 should take charge.
2. VPS1 is up (ns, http, ftp services), but WMS1 is down (crashed). Means that the playlist (asx) file should be built so that it also includes the IP, port & publishing points of VPS2. This should be done because ns1 & ns2 will answer without any problem, but WMS1 will be crashed and won't serve any media connections, thus ASX will look for the next available stream in the playlist.
Do you think that the above is possible. Is this gonna work?
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Jun 24, 2008
Is there any conventional wisdom on WHT about which shared hosting providers have highly reliable email service?
The provider I have now has very good web hosting service but their email services tend to bitbucket far too much mail for comfort. Reliable delivery and reception for the half a dozen emails I might send/receive a day (it's a personal use site) is I hope not too much to ask without needing to pay and arm and a leg for the privilege.
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Aug 24, 2008
Requires a dedicated server in Europe.
Requirements:
1) Processor: Intel Core 2 Duo 2,2 GHz;
2) RAM: 2024 MB DDRAM;
3) Hard Drive: 2x 250 GB SATA (can be smaller);
4) Traffic: At least 1000 GB or unrestricted;
5) Port: 100 Mbit / sec. (ideally 1000 Mbit / sec.);
6) IP-Addresses: 2.
Mandatory conditions:
1) A great date-center;
2) Operational and anglophone support;
3) Ability to establish a panel, for example: ISPmanager.
Recommended requirements:
1) Protection against DDoS-attacks;
2) The ability to administer the server, a company that provides services to lease (regular updates, round-the-clock monitoring, etc.).
The server is designed for the site, which will:
1) Forum;
2) Video and audio materials (up to 20 spots, for up to 10 minutes each), which can be viewed directly on the site using flash-player or download. Clips will not be frequently changed or supplemented;
3) Downloading developed software, up to 0.5 Mb;
4) Download documentation formats: DOC and PDF, up to 2 Mb;
All audio, video and documentation for its own production.
Additional information:
The number of visitors, initially to 10000 per month (probably much less or slightly more, not yet known) The audience will be visitors from the following countries: Ukraine, Russia, Poland, UK, Germany, France, USA and Canada.
Budget:
up to $ 200 a month. But if such amount is not sufficient for the entry requirements, are ready to revise the budget.
Need a really high-quality channel of communication and operational support, etc. Perhaps for these tasks, you recommend other requirements to a server and placing the territory? Check your real council.
Also look in the direction of affordable rental server and utilization of services: Akamai Technologies. If someone has experience working with Akamai, I ask, share their views. Should I use it for such a project?
A lot of information has been revised to servers in Germany, UK and USA. But the single answer, yet to be found.
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Dec 21, 2008
i currently have a shared vps.
any recommendations for SCSI 10k or 15k? Core2Duo would be nice as well. ~4gb ram
I dont need a lot of HDD space or bandwidth. I'm also open to "hybrid" servers as well
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Jul 20, 2009
According to the documentation, Hyper-V VMs cannot boot from SCSI drives and requires an IDE drive for each virtualization. I'm new to Windows (Server 2008) and Hyper-V and planning out some hardware.
Does anyone know if it is possible to:
Set up the the server with 2 SATA Drives (Raid 1), along with 8 x Ultra320 SCSI Drives (Raid 5 or 6).
Load the OS and set up all Virtual slices on the SATA drives, so that that virtual boot sectors are on the IDE drives, but the main bulk of the clients allotted space on the SCSIs? Is there issue with that and if so, how do you manage that?
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Jan 20, 2007
currently my home comp is using a WD 7200 rpm drive, im thinking of upgrading it to raid 0 10k rpm drives, here are the drives newegg.com/Product/Product.asp?item=N82E16822116006 and this is the raid card, newegg.com/Product/Product.asp?item=N82E16816118050 and then i was looking into cables for a scsi drive but i know nothing about them, my friend showed me these cables he found provantage.com/cables-go-09476~7CBTE01N.htm but it says there scsi3 now does this matter? what is scsi 3 and can it be used for these raid cards and hdd, the cables i was lookin at newegg.com/Product/Product.asp?Item=N82E16812193019 are 30 bucks each, now do i need to buy 2 of these for my raid 0 or what? any suggestions on what are the best scsi cables for me and best transfer rate? links would be great too.
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Jul 5, 2007
is there any converters out there for sas drives to regular scsi adapters?
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Sep 20, 2007
I'm completely torn on going the absolute budget route vs spending more for something that'll allow easy upgradeability in the future. I basically need lots of space but file sending-- media like mp3s, video, etc.
it'll be raid 5 and I'll need at least 2-3TB initially but the ability to expand would be nice.
option 1:
nice chassis with plenty of hotswap bays with sas expanders
expensive sas raid card
option 2:
cheap chassis to serve "immediate" needs and go with more later.
not sure what I'd use as a card? maybe even onboard?
regarding reliability: I once saw a database of failure rates of different models. raptor was the most reliable of the "desktop" drives. anyone have the link? I'm wondering of the seagate ES drives are worth the extra money vs the non-ES drives. they're supposedely more reliable and the "server versions" of sata drives.
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Aug 30, 2008
Is there a way that I can check if the host provider installed the correct hardware for my server?
I had 3x Seagate 73GB 15k RPM SCSI so I wonder if there is a way to confirm that make sure they gave me the 15k but not 10k?
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