Low Power Server, 1U, 2 Hot Plug SAS Drives

May 27, 2008

I'm currently running Dell 1750s, 1850s, and 1950s in a colo facility. I am not happy with the 1850s and 1950s power consumption. My 1950s have a single quad core 5310, 2GB memory, dual 15k 73GB drives, dual power suppies and are running at about 1.9 amps with spikes up to 2.4 amps. My applications are disk bound and the servers typically run at a load of .1 to .2.

I'm looking for alternatives to the 1950 that use significantly less power. I need at least 2 Hot Plug SAS drives and would like to have it in 1U. I run 2GB of memory. Dual power supplies would be nice, but are not absolutely necessary. I'd rather not go with a non-hot plug solution, but may have to consider it. I will probably buy 10-15 servers soon and would like them to be identical. I'd prefer buying a name-brand.

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EU Computer Power Plug Standard

Dec 6, 2007

to ship 2 machines to LINX and DECIX from the US, and obviously need either adapters or just new cables. I'm just not certain what plug type is used at both or either location. I guess I'm looking for information similar to like what we have here in the US (NEMA 1-15 or NEMA 2-20).

I'm looking at these adapters:

Grounded CEE7/7 - Germany
British BS 1363 - UK

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Nov 5, 2009

i want to know if there is a difference between enterprise drives and desktop drives and which ones hosts use

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May 5, 2014

We operate many Plesk VPS servers in a virtual environment for our customers and would really like the ability to allow Plesk VPS servers to switch to using our PPA DNS servers instead of having to have multiple ips on each VPS to run their own name servers. Not to mention the added nuisance of each customer having to register name servers and glue records.

We looked at adding the Plesk servers as nodes to our PPA cluster but the license jump and loss of Nginx is completely prohibitive. Is this possible?

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Plug&play Switch Appearing As One Device

Jun 11, 2008

what network device would suit our needs (and whether there is something like what we need).

The device should meet following criteria:

-it should appear as one device only: a L2 switch is not an option as the device has to announce only one MAC address on the uplink port

-plug&play: a gigabit L3 switch is not an option because we would have to change the default gateway of the already configured servers to the L3 switch's IP

-gigabit ports

Is there any reliable device that could be used for this purpose?

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SSD Drives In A Server Setting

Oct 4, 2009

Does anyone have experience with SSD drives in a server environment? I've seen now a few offers with SSD (Intel) and wondering if the speed is noticeable?

Are they worth it? from what I have been reading is that they a superior in reliability, but have issues with limited write cycles.

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Server With 2 Hard Drives

Sep 11, 2007

am getting new server with 2 (73GB) hard drives i need to know the following:

1.I need to put /home in one hard drive 73GB and the other partitions like /boot, /tmp,/usr and /var on the other drive

where should i put /home? on the primary or or secondary drive?is there any effect on the speed?

2. Am used to servers with 1 drive. is there any difference when it comes to security aplications such as APF,BFD,mod security and other aplicatuions settings?

3. in general should i take the same actions when handling a server with 1 drive and server with 2 drives?

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What Is The Difference NAS And Many Hard Drives Server

Mar 28, 2008

i feel the NAS are not very cheap,

it looks likely just a low-level server with many hhds,

but why people not buy a server and put many hhds on it?

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Dell Drives In A RAID Array With Non-Dell Drives

Sep 14, 2009

I have a couple of Dell 1950s and in one of them, I have 2x Seagate 15K.5s that I purchased through Dell and I also have a spare sitting in my rack in case one goes bad, also from Dell.

I was going to be repurposing one of my other 1950s and was going to get two more 15K.5s for it, but wasn't planning on getting them through Dell (rip off?). This way, could still keep the same spare drive around in case a drive went bad in that system as well.

When I was talking to my Dell rep recently when purchasing another system, their hardware tech said you can't use non-Dell drives with Dell drives in the same RAID array because of the different firmware between them.

Anyone know if it is true? Anyone have any experience with using drives from Dell in conjunction with the same model drives from a third party retailer?

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Server Power

Nov 26, 2008

I have been interested in setting up my own server for hosting a website and a small online game I created. My only problem is how good of a server I would need to get.

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More RAM Or CPU Power For The Database Server

Sep 3, 2008

Given the choice which is more beneficial. Some of the things I've read say Database servers use up more RAM and others say they use up more CPU power. I'm just not sure.

Also, what HDD should be used for the database server? I have a choice for SATA or SAS.

Some benchmarks are showing SATA as faster I believe, but that SAS is more reliable? Can anyone comment intelligently regarding that as well?

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Server Power Consumption

Apr 13, 2008

how to go about spec'ing the power consumption of a server. below are the specs of the two servers I'm interested it.

Dual Xenon 2.8Ghz Processors with 2MB cache
1 250Gig SATA Hard Drives
1 500Gig SATA Hard Drive
4 Gigs of Ram

------
Dual Xenon Quad Core 2.66Ghz
1 80Gig Hard Drive
2 320Gig Hard Drives
1 1T Hard Drive
8 Gigs of RAM

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Power Supplies: Do Redundant Supplies Use More Power Than A Single Supply

Jul 27, 2009

do dual power supplies use more power than a single supply?

E.g. Say I have a server than uses two amps, powered by a single power supply. Now if I switch to a dual supply (and say each supply has the same efficiency rating as the single), does my server use more power? How much more?

My simple view of this is that it probably does, but maybe not much. The second power supply consumes some power itself, but since its not under load, it doesn't consume much. Therefore, my server with redundant supplies might use 2.1A or 2.2A.

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Building A Storage Server. Power Consumption

Oct 30, 2008

I'm building a storage server out of spare parts that are lying around here at the office. Purchasing a brandnew server kinda overshoots it's target, since all basic hardware is available lika a big Chieftec 4U casing with 2x 4drive SATA hotswap bays.

The machine will just be dumb storage for saving our backups.

The plan is to add a decent serverboard, proc and some ram as a baseline. On top of that a 3ware 8-port RAID-controller with 8 1TB harddrives (seagate has some nice ones).

Now the only issue i'm having is powerconsumption. The case has an 460W PSU, but I'm not sure if that's enough.

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Using A Switched PDU To Reboot A Dual-power Server

Nov 29, 2007

at getting PDUs for the new facility where we plan to move our servers to. Our cabinet will have 2*20a circuits, so we're thinking of getting 2 APC PDUs (1 per circuit). Some offer remote reboot capability.

Our servers (Dell PowerEdge) have dual power supplies, and I assume the best thing is to plug one power supply into each circuit, so things stay up even if a circuit fails.

So, how would this work if we want to reboot? The servers can run on only one power supply, so does that mean we have to click reboot on the web interface of each PDU at exactly the same time?

I've never worked with PDUs before.. just cheap power strips and a call to the datacenter

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Reducing Server Power Consumption? Underclocking? Ideas?

Feb 16, 2008

What are the best ways to reduce server power consumption?

I have a Dell Poweredge 860 (2.4ghz QC, 5GB RAM, 2 HDs) and it uses 0.46AMPs when running normally. The problem is at boot up it spikes for a few seconds here and there to about 0.6 and this is a real problem as I only have a 0.5AMP allowance.

Should I underclock it? Remove the CD Drive?

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Oct 5, 2009

Has anyone begun implementing SSD drives? We're thinking about using them as OS drives.

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Using 2TB Drives

Sep 30, 2009

I'm not sure they make sense yet, especially in bigger raid arrays...

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1.5TB Drives

Nov 4, 2009

I know there are a lot of experienced hardware guys on here, so I wanted some input on 1.5TB drives. Are they reliable enough to be used in non-mission critical storage servers? 99% of what we do is OEM (Dell) equipment, so I don't test raw hardware much these days.

I've read a lot of negative things about Seagate lately. Can anyone chime in with specific models they've had positive or negative experiences with from any vendor? Reading some reviews on the WD 1.5TB Caviar Black drives, there seems to be some weird issues with them going into a recovery cycle.

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Kernel Drives

Aug 4, 2009

What is the best way to find out which filesystems and harddrive drivers you can remove? Obviously, i need ext2,3 but how do you find which HD you only need?

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WDC Drives, Caviars Vs Re

Oct 1, 2009

I was just wondering whats the real live experience or difference on using Western Digital Caviar series (green, blue or black) on a DC environment vs the RE which are suppose to be for enterprise business.

On the WDC website the caviar series are targeted under desktop disks not servers. But allot of servers and providers use them. If you have servers your suppose to use the RE series, I exclude raptors as I only want to compare medium performance disks here.

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Hard Drives For VPS

Apr 23, 2009

I'm building a couple of VPS host servers for a client.

Each server have to host 20 VPS and each server will be 4 cores with 32GB of ram. So CPU and ram should be just fine, my interrogatioon now is hard drives. The company owns the machines, but not the drives yet.

I searched a lot on your forums but found nothing relating on VPS. I'm basicly a DBA IRL, so I have experience in hardrives when it comes to databases, but it's completely different for VPS.

According to my boss, each VPS will run a LAMP solution (having a separeted DB cluster is out of question for some reason).

First, raid1 is indeed a must. There is room for 2x 3.5 drives. I might be able to change the backplane for 4x2.5, but i'm not sure...

I've came to several solutions:
2x SATA 7.2k => comes to about 140$
2x SATA 10k (velociraptor) => comes to about 500$
2x SAS 10k with PCIe controller => comes to about 850$
2x SAS 15k with PCIe controller=> comes to about 1000$

They need at least 300GB storage.

But my problem is that the servers do not have SAS onboard so I need a controller and in my case the cheapest solution is best.

But I'm not sure that SATA 7.2k will hold the charge of 20 complete VPS.

Does it worth it to go with SAS anyway or SATA should be just fine? With SATA better use plain old sata 7.2k or 10k drives?

That's a lot of text for not much: What is best for VPS: SATA 7.2k, SATA 10k or SAS 10k?

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What To Do With 6 Hard Drives

Mar 25, 2007

I am about to buy a Compaq server with 6 SCSI hard drives. In you opinion, what is the best RAID configuration with 6 HDs?

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RLX Blade Hard Drives?

Jan 7, 2008

Do the old RLX Blade servers use 'mini' hard drives? I can't find an answer anywhere. I seem to recall that they use smaller 2.5" drives. Is this the case?

And, if so, do they make "good" drives worthy of being in a server in that size? Are they essentially just a laptop drive?

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How To Mount And Use Multiple Drives

Jul 4, 2009

I must not even understand the basics of how mounting works in Linux.

Physical drive /dev/sda1 is mounted at /

I created a software RAID array (using mdadm) out of two other drives using mdadm, at /dev/md0, and mount it at /vol:

mount /dev/md0 /vol

Code:
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 9.9G 2.2G 7.3G 23% /
/dev/md0 200G 470M 200G 1% /vol

Now I start creating files in /vol/*

Then I unmount /dev/md0

I still see the files at /vol/*. They seem to be on /dev/sda1.

So how do I use the RAID array at /dev/md0 that I tried to mount at /vol?

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Nov 8, 2009

My server has been formated it has two drives. I have my back up on the second drives.
What is the command I use to list the drives and how to mount the second drive.

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How To Mount And Use Multiple Drives

Jul 5, 2009

I must not even understand the basics of how mounting works in Linux.

Physical drive /dev/sda1 is mounted at /

I created a software RAID array (using mdadm) out of two other drives using mdadm, at /dev/md0, and mount it at /vol:

mount /dev/md0 /vol

Code:
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 9.9G 2.2G 7.3G 23% /
/dev/md0 200G 470M 200G 1% /vol
Now I start creating files in /vol/*

Then I unmount /dev/md0

I still see the files at /vol/*. They seem to be on /dev/sda1.

So how do I use the RAID array at /dev/md0 that I tried to mount at /vol?

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250GB Or Larger Drives

Mar 24, 2009

Anybody know the best place to get a really cheap server with at least 250GB drives? I'm assuming most providers offer HDD's of that size on relatively cheap systems now if we're just looking at SATA.

The machine doesn't need to be anything special, I don't need a ton of bandwidth.

Basically this will be an extra backup machine to pull backups from servers instead of my usual "pushing" of backup data.

So to clarify, I'm looking for a simple machine pretty much anywhere with some drive space! VPS just won't cut it because the drivespace they provide is too expensive (yes, I understand they have nice drive setups though).

RAID etc is not needed, I'm not running anything mission critical but would like to have more locations in place to hold backups for me. WHT worries me alot

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Oct 15, 2009

I can't find providers with 10Krpm HDs+ offshore and they have to have good support. Also I need atleast 2Tb over 100Mbit.

The reason why I need it to be offshore is because my client wants to have a subtitles sites and I'm not exactly sure if its legal or not in america and UK. Also netherlands or germany is preffered I looked at swiftnoc but not sure if they have 10krpm hard drives.

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Raid 1 Vs Two Physical Drives

Nov 1, 2009

I have number of question relevant to dedi. severs. I dont know to post them seperately or in single thread , sorry to mod for my negligence.

raid 1
or
If I have two drives ,and take daily backup on second drive

how much average small websites can hold a single machine=
quad xeon 2.3 , 4gb ram, 1 tb drive what you say?

how many websites you ever hosted on single machine?

is it wise to host large number of website on single powerful machine with external backup, or go for number of small dedis.

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