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    How much ram for ZFS dedup:

    My company is looking at using Nexenta as the foundation of the storage stack of a public cloud solution. Therefore, we will definitely be implementing dedupe as will be thin-provisioning all VMs and over-subscribing the storage we have. FYI, we are going to have dual head nodes for each storage...
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    DIY Private Cloud

    Thanks everyone for your replies. We're exploring vBlock, VSPEX and FlexPod as well as full homebrew SuperMicro compute/storage setup and Cisco UCS compute + SuperMicro storage options through a VAR. I'm currently leaning towards the last option and we should be able to get under the $1M for...
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    DIY Private Cloud

    Thanks for that info :) It's a really relevant and on-topic response that is actually useful.
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    DIY Private Cloud

    Does anyone have any experience with Eucalyptus, OpenStack, some of the other SmartOS applications/overalys? Especially in comparison to vCloud?
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    DIY Private Cloud

    Thanks for that info, I'll definitely look into it. That said, we do have experience with VMware and a partiality to it and the others of the big 3.
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    My ZFS / Nexenta HA cluster build

    I've been working with the sales team on stuff and they've been great so far. Then again, I'm looking at buy $110,000+ of licensing :p
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    DIY Private Cloud

    Any further more specific thoughts? Especially on vCloud as that's what I really want to know/learn about? Thanks :)
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    DIY Private Cloud

    Thanks for that feedback. There's pros and cons to "it" (with it being 'enterprise hardware'). Really, with cloud stuff, economical commodity hardware is part of the pluses with redundancy, "lots of it" and SPLA'd software holding it all together to keep everything as affordable as possible...
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    DIY Private Cloud

    Thanks for being a dick. This is the sort of reply I absolutely wanted when coming to HF for SOME INITIAL THOUGHTS BEFORE FOR PRELIM COSTING BEFORE I BROUGHT IN EXPERTS COSTING ME BIG $$$. From an individual curiousity, I'm interested in how to build a vCloud setup as much as I am from a...
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    DIY Private Cloud

    Yes, we'll be looking at bringing an expert in, but before I start dishing out $ to get advice, I need to have a basic plan I can cost to assess viability and present to our minority-share partner. I'll put that SAN on the list to check out. I'm partial to ZFS, and I'm pretty sure I can get the...
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    DIY Private Cloud

    My company has been providing SaaS to clients for some time now with us receiving HaaS & on-demand storage from our data centre and then slapping on vSphere and the required software for the client etc. etc. Now, we're looking at doing a JV deal with another partner that's been doing a...
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    Best external drive?

    Seagate GoFlex Desk drives are great. I have 7 and another 10 are on the way. Very happy. The 3TB model is what I have and they actually are Barracuda XTs inside so go like a rocket (I'm talking 200MB/s transfers).
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    HDDs so expensive ... should I buy an external and rip it open for a new build?

    You rip the drive out and use it as an internal, duh! :p
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    HDDs so expensive ... should I buy an external and rip it open for a new build?

    I'm pulling 3TB Seagate GoFlex ones from the US posted to me on Australia for an average of $200. I've bought 14 and will get 6 more.
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    Can you take 2 raid0 sets and put them in raid1?

    I read that the OP has 2 x 1TB drives and wants to buy 2 more and have 4 in his NAS Enclosure and do RAID10. Easy done as long as it supports that level of RAID. Am I missing something?
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    HDD prices rising

    If I said that then you might buy up the ones I want :p Haha! STAC3000102...check it out :)
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    Moving cache to ram?

    Create a small RAM drive and set a small cache on that? :D
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    HDD prices rising

    I'm currently buying up Seagate GoFlex 3TBs for between $150-$230 to rip out the Barracuda XT inside. I've bought 8 and am going to get 20 in all. Make 4 x 4 drive RAID-Z2 with 2 hot spares and keep 2 as external drives to backup important data. When the prices come down I'll stock up on 24 3TB...
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    Safe to use this drive internally? (W/ Pic)

    They sure are! You know what else is huge...
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    SAS confusion

    I read this whole thread and LOL'd. A lot. :D
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    Is it possible to convert a non-bootable Windows disk to a virtual machine?

    I'm pretty sure you can use imagex to capture the drive as WIM. Then there is a tool to convert the WIM to a VHD. Once you've got that VHD you just need to convert it to VMDK and you're good to go.
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    Mirroring isn't good enough or maybe I'm just paranoid

    Due to cost restrictions we'll be starting with 1 or 2 servers and then adding more. The intention is to eventually have a pair of servers which will act as head nodes purely for the storage system, but this will only happen once there are enough other servers to handle the load of the VMs. So...
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    Mirroring isn't good enough or maybe I'm just paranoid

    Well I certainly underestimated how much of a dick you are. Sorry about that, won't happen again. You missed a keyword: "initially". I don't mind if there is some underutilization of my L2ARC in the beginning as once I shift VMs to new servers there will be more free RAM and everything will be...
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    Adaptec 51645 Failure / New LSI Controllers

    Agreed. It's not too difficult nor expensive to buy some portable 2.5" 1TB external drives for backup. Have a group of drives on-site and off-site and rotate periodically once backed up.
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    Mirroring isn't good enough or maybe I'm just paranoid

    I'm not looking for cheap, I'm just not looking to spend an insane amount of dollars for overkill or be wasteful. I can't afford to have 2/3 of my disks set aside for parity. I'm probably going to go with what I originally suggested which is 4 drive RAID-Z2 vdevs (2 data + 2 parity). It...
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    Mirroring isn't good enough or maybe I'm just paranoid

    Well then why would you even bother posting? Just to be annoying? IIRC primary school maths 10 x 3 = 30 ;) But, yes, I would do this if I could afford to have that much redundancy but I'm not willing to have less than 50% of my drives being data...just too much $. That would mean 8 (data) +...
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    When is the hard drive shortage going to be over?

    You sound like #occupy. We are the 99% and shizz. LOL.
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    Mirroring isn't good enough or maybe I'm just paranoid

    The amount of data, initially will be about 5TB and expected to grow by a minimum of 200GB/month. The data is comprised of active/running important VMs, testing/dev VMs, general business data and non-critical media (music & videos). The most important data will be backed up online and the...
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    Mirroring isn't good enough or maybe I'm just paranoid

    RAID-Z3 would mean 7 drive vdevs which starts to significantly reduce the number of vdevs involved in the overall stripe. Over 45 drives it would mean a stripe across 6 vdevs plus 3 hotspares.
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    Mirroring isn't good enough or maybe I'm just paranoid

    Thanks for the replies. I'll add a few more details as the discussion has gone a little off-course. The plan is... The drives are in a 45 drive chassis (JBOD) with dual expanders for both backplanes. Each pair of expanders are hooked up to a head (i.e. dual heads) which are set up as a primary...
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    Mirroring isn't good enough or maybe I'm just paranoid

    I'm concerned about using a set of striped mirrors with ZFS for my data--I will likely have 33 drives use. I could set this up as a stripe of 16 mirrors with a hot-spare. Sounds good, but if I lose a single drive, that mirror is compromise and has no redundancy during the rebuild. This...
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    HDD prices rising

    There already is a NAND Flash shortage...
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    Your home ESX server lab hardware specs?

    Don't replace the CPU with an old one, just get a different mobo and keep the E3 :)
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    quick zfs question hopefully - RAIDZ or RAIDZ2?

    I'm an N+2 person as you can lose 1 of something and still have redundancy...i.e. go with RAID-Z2!
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    HDD prices rising

    Doing a bit of research, it seems like these 'Expansion' drives contain Barracuda LPs :( I'm hoping that's not true and someone can confirm? :D
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    I have Issues. Please Assist

    I LOL'd at your title: "I have issues" hahaha Are you able to access the drives at all in Windows? If so, can you read/write fine? Have you tried physically disconnecting all of your drives other than your OS drive to see if this makes a difference? If not, give that a show and try each one...
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    HDD prices rising

    Can anyone confirm whether the Seagate Expansion external drives contain Barracuda XTs like the GoFlex Desktops? I'm looking at: Seagate Expansion 2TB...
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    HDD prices rising

    Don't need/want TLER with ZFS :D
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    HDD prices rising

    Both: business and personal. I'll have 4 x 6 drive RAID-Z2 + 2 hot spares for 48TB usable space.
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