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  1. #16
    Torrevez's Avatar
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    Didn't realise storage was going to give me this many options. I think a 10/15k SAS setup is out of the windows, I just don't have the budget. I also think the E5-2620 is a stretch to far. Maybe I should have stated this at the start but, I have a budget of £1500 for hardware (Server licensing comes from another budget).

    After taking the advice on here I am now looking at a HP ML350 G8 with E5-2420 and 8GB RAM, RAM can easily be upgrade to 16GB at a later date if required.

    As for storage I am now considering 2 Samsung 256GB 840 Pro SSD in RAID 1 for OS and either 3 or 4 7.2k 1TB SATA drives in either RAID 5 or 10
    Last edited by Torrevez; 24th April 2013 at 01:23 PM.

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    As I said above, becareful SSD's don't always play nice in RAID. Can't remember the exact details but I'm sure there's a discussion on here about it somewhere. Also 256mb is a lot for an OS. Personally, I'd look at 1x 128Gb SSD. May free up some money to boost CPU or look at different HDD options?

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    Quote Originally Posted by tmcd35 View Post
    We support a number of primary schools, and I've watched weaker CPU's idle at 2%, I'm never convinced - unless we are talking big SQL db's - that more CPU is really needed on a small network.
    200 client PCs isn't that small...

    Not sure of the current advisability of RAIDing SSD's. Beside, does the OS really need to have a redundant drive? probably not. A single SSD for OS would be nice though.
    We have 16 SSDs in a server in RAID 50. Works great. However, they are enterprise SSDs and cost a pretty penny. If you're going to RAID normal SSDs, then you need to make sure your controller supports it, and that they support it too.

    I'd point out that it's a primary school and, from what I've seen in local primaries, budget and workload very rarely require such high specs. 7.2k SATA would be fine. And either RAID10 or RAID5 for a bit of data security.
    Again, don't assume low requirements simply because of primary age kids - 200 PCs can generate a fair amount of load, even at primary level.

    One thing to remember with all these suggestions is this - whatever you get, you've gotta be comfortable managing it. The suggestions of using Hyper-V etc... are all sound, but they add a layer of complexity that not everyone is happy with (there are some techs down here who aren't comfortable with it). Sometimes, keeping things 'simple' is a better option.
    Last edited by localzuk; 24th April 2013 at 01:35 PM.

  4. 2 Thanks to localzuk:

    tmcd35 (24th April 2013), zag (24th April 2013)

  5. #19
    Torrevez's Avatar
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    Ok so RAID may not be a good idea with SSD's. How about using WD Velociraptor's for everything

    2 250GB WD Velociraptors in RAID 1 for OS and 3 1TB WD Velociraptors in RAID 5 for data.

    This gives us some redundancy, 2tb of storage space, 10k spindle speed and I think I can squeeze it into my budget.

  6. #20

    localzuk's Avatar
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    That would be the sort of thing I'd be looking at.

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    Quote Originally Posted by Torrevez View Post
    Ok so RAID may not be a good idea with SSD's. How about using WD Velociraptor's for everything

    2 250GB WD Velociraptors in RAID 1 for OS and 3 1TB WD Velociraptors in RAID 5 for data.

    This gives us some redundancy, 2tb of storage space, 10k spindle speed and I think I can squeeze it into my budget.
    One thing i would be wary of with using the raptors is double checking they support relevant features such as TLER, anti-vibration etc as i don't think they are classed as an enterprise drive and may not be supported under raid / specific controllers.

    WDC do a range of enterprise drives 3.5" RE4 and 2.5" WD XE which may be more suitable (or consider Seagate Constellation / Savvio etc).

    Ed

  8. #22
    Torrevez's Avatar
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    After a bit of googleing it appears that the WD Velociraptors do have TLER, anti-vibration ect. It's seems the only reason they have changed from Enterprise to Workstation is the inclusion of Advance Format which I believe is only an issue on older server/OSs

  9. #23

    localzuk's Avatar
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    Pretty much all hard disks are Advanced Format disks now - they now store things in 4k sectors, but can emulate 512byte sectors if they're 512e drives.

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