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24

In the SATA specification this is referred to as hot plug and hot removal and they are two separate events. While the electrical and communication layers support both hot plug and hot removal, check that your drive controller, operating system, and drivers support them. Note that all of the below ONLY applies to host and devices (ie, drive controllers and ...


9

You need a SAS expander and/or a server with a disk backplane that has an embedded expander... Please see: RAID card w/1x mini-SAS connector : how do I physically connect 16 disks? and How exactly does a SAS SFF-8087 breakout cable work? + RAID/connection questions


8

It's a hard disk with a FC interface. Nope, you probably can't just arbitrarily replace one of them with a disk with a different interface, and different IO characteristics, especially in a storage array. But ask your vendor to be certain, or consult their documentation! And, spend 30 seconds on Google, too.


6

You can't use non-HP SSDs in HP ProLiant servers like this. Just because this worked on your G7 server doesn't mean it is okay for your Gen8 ProLiant servers. (basically, why buy enterprise gear, then cripple it with incompatible components?) Please see: 3rd party SSD drives in HP Proliant server - monitoring drive health or Third-party SSD solutions ...


5

That particular RAID controller claims 8-lane PCI Express 2.0 compliancy meaning that effectively you'll already be limited to 8 * 4 Gbs = 32 Gbs (or 4000 MB/s) regardless of what's connected to the RAID card. Each SAS SFF8088 connector will cary 4 SAS lanes over a single cable, when each link is at the maximum 6 Gbs port speed theoretically you indeed get ...


4

Whether there's read or write activity, the drives are still online and spinning! Edit: This may just be a function of using the Dynamic Smart Array driver (hpvsa module). HP explains the drive functions here. Please also see HP's video detailing their SmartDrive disk carrier.


4

It is theoretically best to connect the power cable to the hard drive to allow the hard drive the brief second to initialize, but this is seriously only a brief 'moment'. If you look at the power connectors on a SATA 15-pin power cable and on the 7-pin data connector you will notice that some of the traces extend out slightly, this allows the powered ...


3

I am having exactly this problem now, running Fedora 21. I have four of the Seagate 8TB drives (ST8000AS0002-1NA17Z, AR13). The array was built while running a 3.18 kernel and besides the performance not being the greatest, everything was working fine (and I torture tested the drives with a mix of both streaming and random writes for four solid days while ...


3

There are probably some options for you, but nothing that's HP-supported (short of adding something like an HP D2600 JBOD enclosure) I'd suggest just buying a NAS or NAS enclosure to house your disks. You could try something that's USB-connected, but the range of devices and controllers supported by ESXi is small. A NAS is going to be safer, considering ...


3

I'd use SAS in just about every case, unless this is a home system that won't be running production workloads. It's less about speed and more about error correction, the protocol and reliability of the entire system.


3

Don't do it. There's no reason to pursue trying to convert an 11 year-old server to SATA. There's absolutely no upside to it. The backplane is not required to power the server on, though.


3

Based on my experience with similar controllers like Smart Array P420i from ProLiant ML350p Gen8 or ServeRAID M5015 SAS/SATA Controller from IBM x3560 M3 I'd say: 6Gbps per mini-SAS (i.e. 12Gbps) - best possible scenario. I have not tested two SFF8088 ports, only one, and I've hit 6 gbps limit.


3

This question would get more answer and attention on superuser's section. For your question, I would follow the manual from your motherboard (asrock). Usually the harddrive will warn up when you plug it, thus it's more logic to plug the Ac before, and after the data cable, but honestly I don't think there is a order, as hdd caddy do plug them at the same ...


2

Sure, this is an easy process... Once the rebuild is done, you can either use the "Unused Space" to create another Logical Drive (e.g. Logical Drive 3), or you can Extend Logical Drive 2 to utilize the extra space. Once this is done, you'll see a larger block device available to your operating system. If this is Windows, the free space will be ...


2

I've always thought it makes sense to connect the data cable first. When the drive is off, there will be no noise when you connect the data cable. (That's my 2 cents).


2

No, you can't just use any SSD in that model server. The Smart Array P410 array controller is a little sensitive, but will work with most SSDs. For others, it may not recognize the disks or will show error lights or even cause the system fan speeds to increase (because of misread SSD temperature sensors). Being more specific about which SSDs you'd like to ...


1

I have no experience with the drive in mention but it is quite possible it's a faulty drive. A good test is remove all data that you can off of the drive and test it in a completely separate system to check performance and if issues persist than warranty it to the manufacture, if the replacement drive you receive has the same symptoms it's possible there is ...


1

During part of my carrier I worked for a large corporation and we worked with Seagate directly on many occasions... ...Seagate has a vested interest in resolving this. Posting here is BAD publicity for them. You can be SURE to get their full and undivided attention, AND, likely, help enough you can post something back here for us about the experience. I ...


1

With regard to non-HP SSDs in ProLiant servers, nope... nope... nope... nope... Anyway, this is an HP ProLiant server, so it has an onboard Smart Array RAID controller. In order to use the disks connected to that controller, you have to create a "logical drive". (here's a guide) Please tap F8 to enter the HP Smart Array BIOS utility when prompted or use ...


1

In some cases hot-swap may need to be enabled on the BIOS of either the motherboard and/or the SATA controller. This completely depends on the make and model of both, but if you have on-board SATA controllers that should support hotswap then it's worth combing through the motherboard BIOS. SATA cards may or may not have their own BIOS settings, many ...


1

I see the same type of problem with my SuperMicro X7DCA-L with the latest BIOS (R1.2a), though I don't even have to change anything for it to happen. The machine just randomly decides to move things out of the excluded list and/or change the boot order. Sometimes I can reboot several times in a row before it happens, but it happens regularly. I'm assuming ...


1

It is not mdadm, mdadm only controls the kernel-based software raid functionality. You don't need to reboot to reassemble an array. (Maybe only if it is your root partition.) Putting the corresponding kernel messages (you can get them with a dmesg command) would help a lot, although I can say nearly surely, what is the cause of your problem. And it is ...


1

I tried all of the above tips. Even switching cables (power, SATA) didn't change the symptoms. The two disks connected to the add-on SATA controller kept being lost from the mdadm array, so I tried yet another SATA controller. No luck. I ended up rearranging the whole machine so I could live without the add-on SATA controller. The mdadm array has been stable ...



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