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14

You need to change the Firewall rules on both machines (NOT only the Hyper-V Server) Run this command on both machines: netsh advfirewall firewall set rule group="Remote Volume Management" new enable=yes


13

There exist no way at all to (optically) read a disk serial number once the disk is inserted into the system - the holes in the front of the disk caddy are not meant to facilitate reading a serial number but are there out of thermal and/or design considerations. This is generally true for every server/disk array manufacturer. Usually, you replace disks by ...


11

2 Terabyte limit on MBR disks. Convert the disk to GPT for > 2TB. Edit: For completeness - Back up all your data first. Wipe out all the partitions and volumes on the disk. Then right-click on the disk itself on the left hand side and choose "Convert to GPT."


11

Run diskmgmt.msc just like previous versions of Windows.


10

Drives can be marked as failed in an array for many reasons. Maybe there's a few defective sectors. Maybe the drive heads are failing. Maybe cosmic rays hit your drive at the right angle and time to fail a scan. Maybe their firmware has a bug that breaks under . Some of these are reparable failures, some aren't. The thing is, it's really hard to predict ...


9

Supermicro is rough... But so is your hosting company!! There's no excuse for that. Ask for a credit on your monthly bill for the mistake if it caused downtime. So think of this: The disk serial number should be irrelevant. Replacements should be based on model number. (One of the downsides of DIY Supermicro hardware is that you aren't dealing with a ...


9

From what you describe, the main problem is that they decided to use a RAID5 for such a large array, which is quite a bad choice for this setup, for exactly the reason you experience: Having a 2nd disk fail during the recovery breaks everything, and this second failure is all too likely to take that risk. If they had used e.g. a RAID6 instead, having a ...


8

1.) Start>Run.. 2.) “CMD” 3.) “diskpart” to load up the utility 4.) “list disk” to list all the disks 5.) “Select disk X” where X is the desired disk 6.) “list partition” to list partitions on the selected disk 7.) “select partition X” where X is the desired partition that is currently marked active 8.) “inactive”


8

This is one of those areas where my views are contrary to the mainstream. We do not have disk quotas, in fact we encourage users to get data onto the servers and out of file cabinets. We have been doing this for a while, in preparation for implementing document management. Disk is inexpensive, and has been for a while. None of the alternatives is more ...


7

Windows Server 2008 and newer versions will automatically align partitions optimally. There's nothing you need to do. This was a problem in older versions of Windows. The first paragraph in the summary section of this Disk Partition Alignment Best Practices for SQL Server whitepaper makes mention of this functionality (the paper is SQL Server-related, ...


6

Declustering uses multiple RAID controllers in a way that a failed disk can be recovered by work done by more than one controller at a time. Otherwise, if you lost a single disk in a RAID 5 or RAID 6 array, the rebuild would take about as long as it takes to read all the data from an array drive, which can be very long with modern multi-TB drives. Scrubbing ...


5

You can set up smartd to run as a daemon and email you when a disk error occurs. Add -m your@email.com to the relevant line of the smartd configuration file (e.g. /etc/smartd.conf or /etc/default/smartmontools). This is the line that usually begins with DEVICESCAN.


5

From the man page:- "vgrename Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 VolGroup00_tmp" changes the name of the Volume Group with UUID Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 to "VolGroup00_tmp". ...so for your case:- vgrename zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 newvolgroupname ...will rename the volume group with ID ...


5

I hate to say this, but do you know that you were basically adding unraided disks to your pool? The command you provided basically says, "Add another disk to pool nas and stripe it with the existing disks." Is that what you meant to do? The pool is done at this point, especially if anything was written to the bad disk. If this were a pair of mirrors, the ...


5

So it's just a plain old spanned, non-RAID-protected, volume right? If, well you'll have to backup the entire volume, replace the disk, rebuild a blank new spanned volume and restore your data. Essentially you have no easy way to do this, consider using some from RAID other than spanning's effectively R0 setup.


5

Okay, I think the answer is that the COW space for the logical volume is full. Using the command 'lvs' (which I just discovered), I see... # lvs /dev/dm-20: read failed after 0 of 4096 at 0: Input/output error LV VG Attr LSize Origin Snap% Move Log Copy% Convert [...other LVs...] newvm-cdrive mrburns Swi-I- 2.00G ...


4

The first best practice is to never put all of your data on a single hard drive unless that data isn't very important. RAID (software or hardware-based) is very necessary. How to organize data to make permissions management, etc. depends on what data you have to organize for sure, but the approach we take is to have department shares with group permissions ...


4

Don't use /dev/sd*, as they map to single paths only. Use /dev/mpath* devices (or as shown by the output of multipath -l). The output multipath -ll shows that the disk you want to use is /dev/mapper/mpath1 Make your filesystem on it, format it, partition it or what ever you like. Just don't use the /dev/sd* devices. looking at your output, mpath1 ...


4

When choosing a solution first you should know the maximum workload that your DB should be ready for. If you have a product that you are installing, that product will have a recommendation for the setup for different workloads. If the product is designed internally, then benchmark it, create performance limits and cost. Deploy your application gradually. ...


4

With that many servers, you should already have some sort of centralized monitoring solution already in place. You should investigate that solution supporting your server vendor's monitoring interface, i.e. HP Insight, Dell OpenManage, etc., because that will yield the most reliable and most useful information.


4

Ah - just my area of specialisation! SQL 'best practices' assume that you use separate physical disk for the data and log yes, but that's in either a server with physical disks locally attached or via traditional SAN methods where a LUN was just part of a single SAN disk. EVAs are very different to this. Depending on which model you have any given LUN will ...


4

Windows Disk Protection is part of the old "Windows SteadyState" for XP (and the even older "Shared Computer Toolkit") and isn't something you're going to be able to use on modern versions of Windows. There is the Enhanced Write Filter for Windows Embedded operating systems, but that's not going to run on Windows Server 2008 (and if you did get it to run ...


4

I have no Vmware EXSI 4 experience, but from a hardware point of view: 1) Yes, you can add the drive that way. It will not be part of any existing RAID arrays. It will not have redundancy. But the PowerEdge will be able to access it and if the drivers of ESX4 allow it you can also use it as a direct usable disk (passthough) from the VM. I repeat: No ...


3

Thanks JMreicha and Chopper3. I've solved the issue, there was indeed a zoning issue, but even more importantly the fiber was apparently run wrong. I hadn't done a lot (ok, practically no) fiber channel zoning experience before and screwed up the way the fiber switches were connected. I've corrected the issue, fabricA is now connecting just fine over ...


3

HP Diagnostics is a suite that tests and monitors the state of your hardware, and alerts you of a failure or pending failure (for the parts that support predictive failure. The Array Config Utility (ACU) is for creating logical RAID volumes of physical disks. I don't remember if the ACU is the GUI Tool (accessible in Windows) or the boot-time tool, but ...


3

If you select the logical disk under Systems And Devices and click on More Information, you should see which physical drives make up the logical disk and the windows partition info (see under Disk Name and Disk Partition Information). I think that should tell you everything you need to know.


3

VMWare Server is out of date and performs rather badly compared to modern hypervisors. Unless you have tagged vmware-server by accident and were meaning ESXi, you seriously should think about using another virtualization solution, especially since you are setting up a new server. Using split disks would result in a rather large number of files (1,750 ...


3

Having split drives is undesirable if you can avoid them and are concerned about performance. The produce the same effect as a badly fragmented drive, for the simple reason that they are multiple fragments on the physical drive. The only reason I can imagine for not using a monolithic drive is if you backup the drive files and your backup software can't deal ...


3

Why does it have to be from the command line? I like http://www.jam-software.com/treesize_free/.


3

For a free command-line tool, see the Disk Usage program from SysInternals.



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