SAS Vs SATA II Performance
Nov 26, 2008On a normal shared hosting server, what kind of performance gains can you see using a SAS drive instead of a SATA II in raid-1?
View 6 RepliesOn a normal shared hosting server, what kind of performance gains can you see using a SAS drive instead of a SATA II in raid-1?
View 6 RepliesWe have had some old dell 745n that had sata drives in them in the past. These are the only time we have ever used sata. The performance was terrible and we replaced the sata drives more times in over several years and we ever have with sas/scsi drives.
We are looking to get some new disk backup boxes which we plan to go 600gb sas drives, but might be considering 1tb nearline sata from dell.
I would like to hear from anyone using nearline sata and get feedback on performance and reliability overall. Also if you are using for backups, how many backup jobs are you able to run at the same time before performance drops?
running new servers on 500GB+ hard drives, how are these drives performing when they become 50% full?
Can they properly be 50% or more utilized on a cPanel like server with 200+ acccounts?
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?
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?
I am using dreamhost host 3 of my web sites and 1 blog. Dreamhost is great, offers alot space and bandwidth.
but I think they are oversellling their space, sometimes it gets really slow. (overselling ? ok, I dont really know, but sometimes its really slow, and most my asian readers said need to refresh to load the page. I am wondering if theres a way to check if they are overselling or not.)
I am thinking about buying vps, even tho, I still got 5 month left with dreamhost.
I found 2 vps companies are highly recommanded on this forum, JaguarPC and LiquidWeb.
theres already a post compared both companies in terms of price and service. I say I will pick JagarPc, cuz, its basic plan just 20 USD, and htey got promotion now, its even cheaper. and basic Liquidweb vps plan is 60 bucks.
I am wondering why Jagarpc is so cheap , are they overselling? how can we check if they are overselling.
I found a few posts saying how good jaguarPc is. and they are not overselling, but those members just signed up this month, and only have 1-3 posts. I cannot really trust those new members.
Can someone share their experience with JaguarPC? compare JaguarPc performance and liquidweb performance. antoher question is switch from dreamhost to JaguarPC basic vPS plan, will performance gets better?
last question: VPS account allows 3 IP, 3ip = 3 domains? if not, how many domains can I have?
I rented a new server. I check WD6400AAKS, it's indeed a SATA drive. However, why is the label says hda and hdc? Isn't it supposed to be sda and sdc?
Is it true DMA is not needed for my SATA?
Is my disk performance to slow? Does the performance suggest it's a IDE disk?
Here is what on my WHM
hda: WDC WD6400AAKS-65A7B0, ATA DISK drive
hdc: WDC WD6400AAKS-65A7B0, ATA DISK drive
hda: max request size: 512KiB
hda: 1250263728 sectors (640135 MB) w/16384KiB Cache, CHS=65535/255/63
hda: cache flushes supported
hdc: max request size: 512KiB
hdc: 1250263728 sectors (640135 MB) w/16384KiB Cache, CHS=65535/255/63
hdc: cache flushes supported
root@abc [~]# hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/255/63, sectors = 1250263728, start = 0
root@abc [~]# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 12040 MB in 1.99 seconds = 6036.46 MB/sec
Timing buffered disk reads: 24 MB in 3.20 seconds = 7.49 MB/sec
Maybe what the advantages/disadvantages are of each in regards to a web hosting configuration?
View 6 Replies View Relatedabout 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.
what is the benefit of scsi upon a sata hdisk
View 10 Replies View RelatedI have ordered a dedicated server SATA Xeon but got IDE Xeon. Should I contact my datacenter to change the server or is ide and sata the same thing and it does not make a real difference.
View 9 Replies View RelatedSAS/SATA compatibility
I am looking to buy this barebones system:[url]
I wonder which drive give the best performance? Look like they all have the same 15000 rpm. :d
Any experience?
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 .
I am looking for something like this:
[url]
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.
For a server would a Raptor (10K rpm) Do better than same capacity SATA-2drive?
View 14 Replies View RelatedI've got a 'virgin' machine from Nocster running CentOS 5, including a SATA drive (shows up as "SCSI").
It looks like it'll be a straight-forward install [url], but I wondered if anyone has had this exact combination before and if there are any problems I should expect? Given that it's a dedicated machine I don't have physical access to, I'm slightly paranoid about screwing up.
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?
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.
on a new pc I tested to install a new disk sata;
ok I installed with using application disk manager 10, but when turned on pc I not see the initial dos screen;
I see directly win xp; (one other pc I have a first step where see for 1 second the dos and where I can, if I want, enter in the bios);
in this new pc I not see this step, so I not know how enter in the bios;
I clicked F10 etc other buttons but not work;
at the moment , after I does some error with acronis for make a dual bootI have this error:
pc not turn on more win xp but have always error mbr;
if I insert a boot floppy I can see the prompt C:
but if I write dir I not see noone files
I have only the dimension of the disk;
if I write format c: not work;
QUESTION:
how I can format all and reinstall
better the sata disk?
and after, the steps for install on a 2nd partition one linux S.O.
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
I have an old server with only IDE and SCSI connectors on the mobo.
However, I have only SATA drives and no IDE available. I consider to buy an entry level PCI SATA adapter card. What do you think ? Can I install and boot Linux directly from it?
There is no raid involved.
I'm having the same problem that a lot of you also faced - my SATA disk is being detected as an IDE disk. (/dev/hda)
I've had the datacenter set AHCI mode in BIOS, however that didn't seem to fix the issue.
I keep hearing about kernel upgrades fixing this problem, would it really help?
Or is there any other way to go about fixing this without having to reload the OS?
I'm running CentOS 5.4 x64 on the 2.6.18-164.el5 kernel.
I have a delicated server with "Intel RAID Controller: Intel(R) 82801ER SATA RAID Controller",I cannot find information on this raid.The 80 GB harddisk is about 4 years old,if one harddisk fail,I wonder if I can swap a new one bigger capacity and it will auto rebuilt?
View 2 Replies View RelatedHow much faster is a Raptor 74GB 10,000rpm compared to a Seagate 250GB SATA-II 7200rpm? Both are priced the same. I'm comtemplating on which one to use for a database..go for more storage or a faster drive.
View 8 Replies View Relatedi know the subject may been talked a lot of time,
but i think those thread are too old,
and by the time pass and technology growth,
it may take difference,too.
in my feeling,i like seaget,
but some people tell me WD may be better,
if possible,could you tell me your choose or experience?
for possible,it can include the series type,
for example,WD 500G WD5000AACS...etc.
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
i bought a new sata drive (seagate 320 gb) yesterday. while i'm trying to install new os to my server, on the setup i take "no disk" error. how can i install freebsd with my sata disc?
View 13 Replies View RelatedCan anyone recommend a good case/enclosure for a sata raid array? I would like to build an array using 500 GB SATA Harddrives. Will the server need much processing power and ram if I am going to use a decent hardware raid card? What card would you recommend? Are there any premade sata arrays that allow you to just pop in your own harddrives and don't cost thousands of dollars?
Also, can anyone recommend a enclosure if you had a server that had build in raid with 8 sata ports, but only two harddrive bays and wanted to use the entire 8 ports?
We just got in our first shipment of Supermicro SC512L-260B cases. We have been using much larger and more expensive 1u (or even 2U) cases, even for base servers. I wish we had went with this chassis a long time ago.
My question is on the SATA cables. I know you can order the Supermicro CBL-0044 cable to allow connection to the hard drives in tight spaces, but these can be expensive or hard to find. I have a few coming, but does anyone have a source or know of a generic cable that will work? Or how do those of you that use this chassis route standard SATA cables? I see you might be able to go under the fan, but I'm not sure that is a good idea.
Just bought a new OEM 3ware 9500S-12 SATA RAID Controller from ebay for $250, is it a good deal? Does it work with SATA-II HDDs?
View 1 Replies View Related