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18

Reevaluate where you're quoting these items and see what the realistic purchase prices are. I often deploy the HP StorageWorks D2700 and D2600 enclosures and populate them with HP-specific drives. I pay less than $1,000 US for each base unit (without disks). The real cost is in the disk drives. These are usually available in bundles with the enclosure ...


18

SAS is active. It is a Network. a 24 drive enclosure likely has 3 backplanes, each driving 8 drives, chained, and everyone of the them is ACTIVE. It has a full SAS Management chip. As such, it has a CPU, it has some RAM, it has Firmware on every of those backplanes. SuperMicro sells a 5.25" to 2.25" enclosure (put it into two 5.25" Slots) and it costs ...


7

Well, I use a D2700 for ZFS storage and worked a bit to get LEDs and sesctl features to work on it. I also have SAS MPxIO multipath running well. I've done quite a bit of SSD testing on ZFS and with this enclosure. Here's the lowdown. The D2700 is a perfectly-fine JBOD for ZFS. You will want to have an HP Smart Array controller handy to update the ...


5

Any drive should "work" but you will need to carefully weigh the pros and cons of using unsupported components in a production system. Companies like Dell and HP can get away with demanding 300-400% profit margins on server drives because they have you over a barrel if you need warranty/contract support and they find unsupported hardware in your array. Are ...


5

If the enclosure itself has decent air movement, I don't think changing direction will help much. BlackBox and a few other manufacturers make industrial switches meant for high heat/dust environments. I used one in an outdoor enclosure in direct sun in Las Vegas (inside temp probably got to somewhere around 120 degrees Fahrenheit, maybe more, during the ...


4

I'm not aware of any that the drive goes inside like you're showing, but I have one of these and realy like it: http://www.newegg.com/Product/Product.aspx?Item=N82E16817707170 The drive just slots in "naked". Actually, it looks like the company that makes the tray you described also has "docks", too: http://www.icydock.com They've got some sweet looking ...


3

According to the IBM Rack Installation Instructions it appears that they use an M6 screw; however, I'm not certain what length. Note: I purchased some M6 x 3/4" screws with clip nuts and nylon washers from Rackmount Solutions (P/N HWM6-50-Clip). I would have preferred to find the combination hex and Phillips screw head that IBM uses by default, but for the ...


3

First, the enclosure firmware may (and surely will) notice non-HP-branded disks, but in fact it won't impact you too much. I doubt HP hardware will reject your drives (never seen that on HP ever before), so I'd give it a try. But, when it comes to any updates (mainly, new enclosure firmware), HP will fix issues with their branded hardware, not with any ...


3

If it's not on the list of supported drives (configuration information, step 4), don't install it. It may or may not work, but it would be a fairly expensive experiment if it didn't work in such a way that something broke. They have five SSD drives listed for this box, 2 SLC and three MLC. SLC last longer, but tend to be more expensive.


3

SATA and SAS are point-to-point links. So the total distance is irrelevant, only the link lengths. The SAS Protocol is used to connect to SAS devices. SATA is used to talk to SATA devices. SAS HBAs and Active Backplanes (aka SAS Expanders) must be able to speak SATA, so it can communicate to SATA drives; and this SATA connection is sent back over the SAS ...


3

Look at the features and it becomes clearer. The cheaper one from SuperMicro is a flat "extend a server" element.Redundant power supplies but "that is it". Simple SAS expander. The other ones are part for a SAS network inrastructure. Multiple controllers (hot swappable), zoning support - the idea is not that you ahve 60 bays for a server but 60 bays and ...


2

We think that the price difference is way too big (the price/bay is more than triple). Why is this? The price difference is a function of the capabilities of the product. As @TomTom said, multiple paths, zoning, power supplies, and hot-swap components are all features of a high-end JBOD storage enclosure. Now, I would suggest that building a server ...


2

I'm not a fan of VC on its own, it gets expensive and isn't as flexible as you'd think - BUT in conjunction with the Flex-10-based blades (495, 490, 460 etc) they're fantastic. You can effectively cable once and never go back to the rack, everything is just a mouse-click away. The performance is great and even our network & SAN guys don't get sniffy ...


2

As in the DG of the VC module itself? It's under EBIPA but choose interconnects instead of devices.


2

Isn't your Dell still under warranty? If it isn't, you can replace the disk with another model and reuse the hotswap drive carrier.


2

As far as the logistics go, that will work. The hot swap enclosure is just an enclosure for a standard 3.5 inch drive. However there was a time when Dell machines would only recognise, or allow you to use Dell branded disks. I believe Dell updated their firmware in most places to make that not the case, but you may want to make sure that your firmware is up ...


1

You can just hook the enclosure up to a different machine and use the "Import foreign disks" functionality of the Disk Manager. Make sure that it runs the same Windows version as the old, broken machine.


1

The ideal solution would be to get something like an air-conditioned server rack - with proper air filtering for all of the soot it sounds like you're also dealing with - especially if you have more hardware besides just one switch that is of concern. https://www.google.com/search?hl=en&q=air%20conditioned%20data%20rack&tbm=shop currently returns ...


1

I have seen this happen in external enclosures when they are not receiving enough power. Using first generation USB this happens quite often. You might want to use an external power supply + the enclosure I know - not quite as easy as it should be.


1

The Drobo is just such a device, though it also provides a RAID controller.


1

If your SATA controller is truly hot-plug compatible, it's supposed to pick them up. However, you need just the right combination of drive, card, and breed of goat to make it work right reliably. You may have some luck rescanning the SCSI bus (yes, SATA drives live on the "SCSI" bus) to find the new drives you plugged in, but sometimes it just doesn't work ...


1

It'll fit yes, unless you have a lot of other bits and bobs stuck out the front or back of the servers (LR SFP/SFP+'s don't like having doors pressed against them) but yes it'll fit - that said I tend to by 1000mm deep racks myself but then I use more C7000 blades than DLs.


1

Google tells me that they exist and can be purchased. Look for "SAS enclosure" and select something with the right connector - SFF-8470 (InfiniBand) is quite common but SFF-8086/7/8 (various mini-SAS) can be found too. More cheaply, an "external disk array" (disk bays with power/SATA connectors) also exist. Everything else will depend on your setup - ...


1

You could look into swapping the switch for an industrial grade unit, which are designed to work in these kinds of environment. I've seen these on some of our customers sites (where dust is an issue), although I've not had any involvement with the hardware, so don't take that as a recommendation. I don't know anything about your set up, so you need to ensure ...


1

As a previous comment mentioned, check out /sys/block/sdX. If you cd to one of those directories, and then do ls -l, you'll see a symlink for device, which should point you to the path of the device. For example, on my system I see device in /sys/block/sdz linked as follows: device -> ...


1

This is probably not an intentional failure on HP's part. Since the failed drive changes with reboot, I would more likely suspect a bad firmware interaction between the drives and the controller, which is why the 2TB drive works but the 4TB doesn't. WD would be more motivated to research and fix than HP so I would start there. Side note: the reason that the ...



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