which is why ive yet to buy one - none of them state they run directly off the battery so i assume the worst
anything <$100 lol?
just something that can provide constant power and maybe 30mins-1hr of backup battery. thats all hehe
intersting stuff isnt it
Take a look at here and here for more detailed information, but the basic type you're after is called an Online UPS (additional subtypes exist, and additional information is in the links).which is why ive yet to buy one - none of them state they run directly off the battery so i assume the worst
Unfortunately, No, as they're ~10x that minimum for an SUA1500 model, according to the APC.au site (1500VA - and as it's not listed as online, it's likely the Line Interactive type now; still better than what you've been looking at I think).
And the true Online unit is worse than that, (1kVA or 2kVA would be in the range you'd have to get in that family, as there is no 1500VA unit). You might also require a larger circuit to run a 2kVA unit (assuming you don't have the necessary circuit in the house/apt.), which means the added cost of an electrician (and almost certainly won't be possible in a rental apt./dorm).
Take a look at here and here for more detailed information, but the basic type you're after is called an Online UPS (additional subtypes exist, and additional information is in the links).
Unfortunately, No, as they're ~10x that minimum for an SUA1500 model, according to the APC.au site (1500VA - and as it's not listed as online, it's likely the Line Interactive type now; still better than what you've been looking at I think).
But you can usually find refurbished units if you look hard (there are companies that specialize in this), and they'll work just as good as a new one, but at a notable savings.
I'd go ahead and stripe the 4x 1TB's together for scratch space (~400MB/s or so from the set, which is more than sufficient).
Well, if you don't have the UPS on hand, I'd start with that.
That's a toy (link).
I'd suggest going back to the links and look for a smaller unit (VA rating).
That's a toy (link).
Eaton makes good gear as well, but you found the wrong model.
The Eaton 9130 (700VA version) would do. The 500i might as well, but it's a Line Interactive type, not Online as teh 9130 is (and certainly a notable price difference as well).
Given budget limitations, you should try a line interactive unit, and see how it will act under the conditions you're experiencing. If it won't work, then you'd be stuck with buying an Online unit (refurbished or otherwise).
I know nothing of the company/brand, but it's the right type for "bare minimum". Whether or not it will suffice, I can't say, as I don't know the specific power conditions at your location (sometimes even these won't do).
NO THANKS?!?!? You CHEAP B@&#%^D.
But if you can swing it, it's not a bad idea. More importantly however, if the Line Interactive model won't do, you'll have no choice (but you'd have to test out the other model first, and see how it reacts with your equipment).
i dont even think our energy company knows the specifics
its pretty consistent though, hardly ever had black outs or brown outs. just need it to work so that the darn washing machine doesnt muck it up!its not my house haha! if i dont find something cheap then it wont be bought, my rents dont care about the internet constantly being reset.NO THANKS?!?!? You CHEAP B@&#%^D.
It's the type that would solve the problem though. But like anything else, if it's really worth having, it's not cheap. And I understand the starving college student life means funding it is a challenge at best.
They can't, as the load is variable. They can however run statistics from previous data to get some idea as to where to set the controls (furnace based plants can't adapt that fast, as they take days to cool).i dont even think our energy company knows the specifics
Maybe. Worth asking if you mean in-store, but you'd want it at your location, and check it for as long as possible (i.e. limit of return period).i wonder if they will let me test it
The batteries are lead-acid types, and typically last 3 - 5 years.what is the battery "life" like on these sorts of on-line devices? what technology of battery are they? because if i were to buy the $500 model, i would want it to last me at least 5+ years (to justify my investment).
Assuming you only want to run OS X, you'd be fine. 2x Intel 160GB SSD's would generate ~500MB/s for sustained reads, and the ICH in the chipset can handle ~660MB/s. So even if you run a single HDD simultaneously, it won't throttle (660MB/s or so, no matter what the disks can do, as the ICH becomes the weak link).I'm relatively new to video editing on a mp and this is the closest forum I can find to my question. At any rate, it's clear that all of your knowledge greatly exceeds my own. I am buying two intel 160 GB SSD drives in hopes of setting up a striped software raid on my 2009 MP. The existing 750 GB conventional hard drive will function as extra storage and the entire system will be backed up with a time capsule (2 TB). Are there any problems I should foresee? Again, I'm relatively new to this so speak (write?) very slowly.
Assuming you only want to run OS X, you'd be fine. 2x Intel 160GB SSD's would generate ~500MB/s for sustained reads, and the ICH in the chipset can handle ~660MB/s. So even if you run a single HDD simultaneously, it won't throttle (660MB/s or so, no matter what the disks can do, as the ICH becomes the weak link).
If you want to run Windows (and/or Linux), you can do it under certain conditions, but not via Boot Camp or as a separate disk on the logic board's SATA controller (ICH built into the chipset). Disk Utility changes the system firmware, and will no longer function with Windows or Linux.
You'd need a separate card that can boot Windows (BIOS), which can be a SATA/eSATA card (cheapest method), up to a full fledged RAID card. There are a few cards of each type that would suffice, depending on specifics, such as drive count, Port Mulitplier support (if you need it), and SATA specification (3.0Gb/s is fine for HDD, but with SSD, 6.0Gb/s is recommended).
Hope this helps.
It seems the technical issues regarding Windows and Linux won't be a problem then.
It's a really good idea, but not absolutely required to keep the data already written in tact. But if power goes out during a write, that file will be corrupted, and the work may need to be re-performed (if the application doesn't have the ability to resume on it's own; OS X won't do it for you).
The sustained throughputs will definitely improve with a striped set (RAID 0). In this case, you get:
If the SAS or SATA controller chip is 3.0Gb/s, this is a bottleneck, particularly on this card.
The cable's won't hinder performance so long as you stick within the specified lengths (1.0 m for passive, and 2.0 m for active, which is only via a PM chip or SAS expander equipped enclosure). Internal or 1x port per disk external are passive signals, so you'd need to stick with 1.0 meters (and stay away from adapters, as they're not suited for SATA signals; the voltages are way too low, and the array is unstable at best).
Definitely, as some will get a better idea from throughputs (MB/s), such as DAS (Direct Attached Storage = storage is available only to the system it's attached to), and others from IOPS (i.e. SAN systems running large scale databases for example).
Actually, the PCIe lanes can be an issue as well under certain circumstances. For example, each drive capable of pushing 3.0Gb/s ports to the limit, enough disks to have one port essentially using a single lane on it's own (i.e. 8x disks on an 8x lane card), and either the slot or card using the PCIe 1.0 specification (PCIe 1.0 = 250MB/s per lane).
First off, a proper RAID card has either a SAS or SATA controller, dedicated processor (removes the RAID processing from the CPU), and a cache. It's also designed to handle it's own recovery (essentially, it's a dedicated computer in it's own right, but aimed at a specific use, which is to handle the disks in specific configurations for increased redundancy and/or throughputs, depending on the level implemented). When dealing with parity based arrays, you have something called the write hole, and proper cards include a hardware solution (NVRAM). They need batteries and/or a UPS to help with it, as it also requires power (ideally, you run both, but some card makers don't actually offer batteries, as the UPS, particularly an Online type, are expected to be used, and even the card battery can't help you if the data is larger than the cache).
Definitely, as some will get a better idea from throughputs (MB/s), such as DAS (Direct Attached Storage = storage is available only to the system it's attached to), and others from IOPS (i.e. SAN systems running large scale databases for example).
In your case, it's a DAS situation from what you've posted so far (most MR members use this type of storage).
Actually, the PCIe lanes can be an issue as well under certain circumstances. For example, each drive capable of pushing 3.0Gb/s ports to the limit, enough disks to have one port essentially using a single lane on it's own (i.e. 8x disks on an 8x lane card), and either the slot or card using the PCIe 1.0 specification (PCIe 1.0 = 250MB/s per lane).
BTW, 6.0Gb/s RAID cards are designed with Gen 2.0 PCIe spec, but would experience the same issue with fast disks (250+ MB/s) if it's in a PCIe Gen 1.0 slot. Another way to throttle, is if the lane count of the slot is less than that of the card (i.e. running an 8x slot in a 4x active slot that it fits; 8x or 16x lane physical connector, but not wired for that many lanes electrically).
It all depends on the specifics, so as the old saying goes, "The Devil's in the Details".
You need to figure this out before doing anything, as you could mistakenly spend more money than you need to. An exact description usually helps if you can't quite do this yourself (i.e. software usage, file sizes involved,...).
You'd probably be fine using a singel SSD for an OS/applictions disk, and mechanical for anything else.
Software.... Eww...
Compared to hardware anyway.
(And, one of the reasons I'm never happy with it... they just don't have the involvement we have in it.) It's a business decision...
ahh 4KB blocks. nice, not high but certainly pretty intense for mechanical disks! i imagine they wouldnt last too long haha! thanks for that info
As in a Host Company?The hardware portion is outsourced.
For a database, 4k makes sense. Some of the newer SSD controllers have gone to 4k operation internally, such as the SandForce.
I wouldn't think so, unless SLC based models are used. Unfortunately, they're still really pricey and may not be an option for this reason.