Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Share tech news, updates, or what's on your mind.

Sign up to Post

Hot swapping drives Risk

I am used to see Engineers swap mirrored drives off the servers. They take the bad drive out then put it back to reseed.

However, in some situations both mirrored drives have green lights which meeans they are good and some engineers will take out one of the mirrored drive, for instance just to read serial number.  In this case I was wondering if it is risky, since the drive taken out might be in the process of getting Data written to before it gets mirrored to the other drive.

Any idea on that ?
Ensure Business Longevity with As-A-Service
Ensure Business Longevity with As-A-Service

Using the as-a-service approach for your business model allows you to grow your revenue stream with new practice areas, without forcing you to part ways with existing clients just because they don’t fit the mold of your new service offerings.

have an old 5.5 esxi host (same vcenter) Out of need due to resources on another host I had to build an exchange server on it.  It didnt' have much in the way of diskspace and because of the swap file taking up 50gb I only have 400mb left on the local storage, my mailbox databases reside on an iscsi volume. OS on local.  I can't even backup because of the low space on local. I want to move that OS drive to the Iscsi Volume. Is it as simple as turning VM off, migrate and powering on?
Dell PowerEdge 840 -- Server 2008 Standard - PERC 5/i RAID controller ----- does not reboot after Windows update.

I accepted the MS Update yesterday and when the server rebooted, it did not come back up.   It appears that either the RAID controller is bad or the configuration got toasted.   I am a fairly non-tech person with just enough knowledge to understand what someone is asking me to do and then performing it.   This server is our SQL server and has a database on it.   Our office is 'dead in the water' until this can be resolved.   Can you please help me?    I’m hoping that there is a simple way for the RAID controller to be instructed to ‘grab’ the drive configuration off the drive itself and then we’ll be back in action.   I called Dell for telephone support, but they told me that it would be $1,000.00 for 2 hours of telephone support.  Ugh!    We do not have that funds available.

Would appreciate your expertise!
I need some help to know where to start digging.

I've got two hosts (ESX) and they both have 10gig NICs.  They plug into a 10gig switch (ubiquiti).  

I'm using Veeam to migrate one VM from host one to host two and the speed is 48 MB/s.  Of course, I am expecting faster.

Now, my Veeam Server is a standalone server with it's own 10gig NIC, going into the same 10gig switch, so I thought maybe the traffic is passing thru the Veeam server and that's slowing it down.  Maybe it's the storage (since Veeam tells me the source is the bottleneck).  Of course, it dawned on me AFTER I started the move that I could have just moved it from one host to the other using vCenter, since the VM isn't changing storage, just moving hosts.  Stupid me...I don't wanna cancel it so I'm letting it run.  

This is also a good exercise for me.  I need to know where I'm weak.

Anyway, Where do I start?  

No jumbo frames turned on by the way.

I have 8 x 4TB SATA drives (hot swappable) and want to configure Storage Spaces for them but have been wondering if I should create two pools and each has 4 x 4TB with mirror or just one pool with 8 x 4TB with mirror. What is your suggestion?
I had this question after viewing NAS drive recommendation.

I'm looking for NAS recommendations. We currently have 2 Seagate NAS OS 4 NASes. They work quite well as long as they are on the same site we are backing up data from. However, we had one at a remote site so we could use it for offsite storage. However, we ran into an issue with the NAS throttling down during transfer. This would cause the transfer to take to long to complete. I wanted to buy another one but want to make sure not to run into the same issue.

Which NAS do you recommend? We will be looking to purchase one that will hold at least 8TB's of data and use Raid 6.
This is using a SPARC server hardware. This is using Solaris 11, with 2 VMs (using ldm). We used fiber-optics network-based SAN Storage, create LUNs, and allocated for 1 or more for individual VMs. We are using "ldm" commands to manage these VMs. On one of this VM - mcsat1, there is only 1 LUN allocated for the rpool. Now, we wanted to add-in one more LUN to form the "storage pool" (mirrored). After that, we wanted to remove the original LUN and use only the new LUN. Please see attached document for steps we conduct.

c1d3s2 is the new disk added in and kept, and c1d2s0 is the old disk and supposed need to remove. After the detaching, we do the system reboot. However, we faced a problem here - system failed to reboot, with the reason being "boot disk can't find". In this case, we already change the "boot-disk" with command - "ldm set-variable boot-disk=IBM2SAN2 mcsat1".

In "ok" prompt, we typed "boot /virtual-devices@100/channel-devices@200/disk@3" with attempt to boot the system up via this new disk was successful. If you see the document, this IBM2SAN2 is actually refer to "/virtual-devices@100/channel-devices@200/disk@3", booting "IBM2SAN2" failed while "/virtual-devices@100/channel-devices@200/disk@3" passed, why?

Thanks in advance.

I am currently using Veeam Backup and Replication for backing up my VMware VM's. I have several large VM's that are not in use but I want to keep stored in cold storage, preferably in the cloud maybe AWS or Azure. As of right now Veeam does not have a way of directly taking a specific backup of a VM and putting it into AWS. I want specific VM's to go into cold storage and then delete them from VMware.  

Is there any way (with Veeam or without) for me to backup specific VM's and put them into cold storage in a way that I could restore smoothly back into on premise if necessary?
Can somebody help me please. I have 2012R2 hyper-v cluster with two nodes and an IBM Storewize v3700 connected over SAS. I can't figure out how much free space there is in storage volume (I think free space isn't freed up on storage)

For example, in hyper-v cluster console, there is clustered volume "brzi" ("fast" in english) which corresponds to volume on storewize. It shows size of 1.50TB and free space of 676GB, app 50%.
In Storewize GUI, i have 1.5TB pool with 1.5TB volume ("brzi"), that is available to cluster hosts, and it's seen in the image above as clustered share vo .
But when looking in properties of that volume, free space doesn't match free space reported to the cluster (676GB). The files when selected from host, really takes only about 50%.
Storewize VolumeIt's seen as space is entirely used....

Thank you
Hi EE,

Today we had a sudden spike on our Flash Array Storage network, something was running for 4 hours and consuming 1 GB of throughput.
We have isolated the spike down to 3 servers (virtual Vmware boxes); these servers are dedicated SQL servers training and dev environments no much activity on them normally.
I have checked to see any SQL jobs were running they weren't and restores were occurring this time.

Any ideas on how to troubleshooting this issue as we don't want this occurring tomorrow morning?

Thank you.
OWASP: Avoiding Hacker Tricks
LVL 13
OWASP: Avoiding Hacker Tricks

Learn to build secure applications from the mindset of the hacker and avoid being exploited.

we got canon C356iF II imagerunner
would like the scans to be saved in a certain folder that is shared and accessed via SMB.
we currently do not have a file server to utilize for such.
does this scanner come with internal storage that can be utilized for this, and it can be accessed via staff over SMB of FTP ?
I have a dell PowerEdge R510 Server with 3 hard drive Raid 5
One of the drives is flashing an orange and green light.
Dear All

           I have a esxi 6.5, and i'm trying to expand HD storage on one of the vm centos 7, but after I applied ok, it shows below error message, and I checked my vm host client, its up to date, any help would be appreciated


I have a PNY 256GB USB thumb drive.  All of a sudden when inserting the thumb drive into my machine it is only showing the size to be 31.9 gig.   I have quick formatted the disk in hopes to wipe out the partition it is unable to read with no luck.   Has anyone had this happen to them in the past and know how to restore a missing partition?

Originally when I got the thumb drive it showed as 256gb I do not know what changed.
 I am trying to build a new server with three Micron 960GB SSD drives doing Raid 1 + hot spare. The motherboard is Supermicro SM X11SCH-F on Supermicro SM 733 TOWER CHASSIS.
 The question is whether to utilize built-in RAID controller to do what I want to do or buy more expensive controller like "LSI Logic LSI00344 9300-8i SGL SAS 8Port 12Gb/s".
 In the past, I always purchased  "LSI Logic LSI00344 9300-8i SGL SAS 8Port 12Gb/s".
 However, I am getting SSD drives which are so much faster than SATA or 12Gbps SAS, so I am wondering if there arereal benefits of spending $700 for  "LSI Logic LSI00344 9300-8i SGL SAS 8Port 12Gb/s".

 I would appreciate your insight.
What is the command to check remote mgmt card is installed on windows server using command prompt?

Is there any other way to find that card is there or not?

So when I run this, “robocopy  \\Source\D$ \\destination\D$ /E /ZB /DCOPY:T /COPYALL /R:0 /W:0 /V /TEE /LOG:c:\RobocopyD.log”

My drive goes into an "unformatted" drive and I lose all access to the drive... Can't figure it out, can someone please help. However, robocopy can see the files on the drive.

What is the process for adding a LUN to a host in VMware VCenter?
I have  Dell MD3420-21.6T-SAS-OEM lying there with no use... :) So I want to use it ...
Few questions...because I never touched one of those ... I downloaded few guides but not sure how to configure....

How do I Start using it ? Do I must use ESXI and WMWARE and to add the server as a storage?
Can I use this storage as regular data storage? just to configure storage for files and give it IP address ?

Any reference will be great...
Acronis Global Cyber Summit 2019 in Miami
 Acronis Global Cyber Summit 2019 in Miami

The Acronis Global Cyber Summit 2019 will be held at the Fontainebleau Miami Beach Resort on October 13–16, 2019, and it promises to be the must-attend event for IT infrastructure managers, CIOs, service providers, value-added resellers, ISVs, and developers.

My small business is getting a Dell Poweredge T440 and we were advised to use Raid 1 for the OS and Raid 5 for the other drives.

We are going to get 8, 3.5 inch slots for HDs. OS will use 2 drives and Raid 1. Then we want 4 drives to be set up with Raid 5.

Does this give us 4 drives and 2 "hot spares"?
  • 2 x Hyper-V 2012R2 Hosts
  • 2 VMs on Host 1
  • 2 VMs on Host 2
  • Clustered Storage Volume via iSCSI
  • Volume 1 is attached to Host 1
  • Volume 2 is attached to Host 2

  1. Unable to migrate VMs from Host 1 to Host 2
  2. VMs from Host 2 can migrate to Host 1

  • VM 1 from Host 1 throws a 21502 Error
  • VM 2 from Host 1 states "Clustered storage is not connected to the node
I'n not familiar with Proliant servers. I seem to be getting mixed info on drive array on HP Proliant DL380 Gen 5 server. The front panel drives are listing these as 60 GB drives. There are 5 of them. If I go into the system management home page, on the array controller, it lists the physical drives as 466 gb (I assume 500 gb) drives and there are 5 listed in the physical drive listing. I will attach a screen shot of the management console. I'm also attaching a shot from the front of the server and the E200 array that shows no physical drives. Not sure why there are 2 array's in the computer. The first was an P400 array.

One of the drives in the front panel is showing a solid green LED light on. From what I've been able to locate, that indicates the drive has failed and has been taken offline by the controller. Is that right?

If I go to replace the drive, what do I actually use? I see that there are 60 GB hot swap drives that were made for that unit but the management console is giving me a different picture so I'm not sure what to try.

Any advice would be greatly appreciated.


I noticed a couple reviews with Highpoint's new M.2 NVMe RAID controller . What I noticed  was that there were testing with consumer NVMes which begs the question about what is going on with TRIM/Garbage Collection.

   Everyone was staying away from consumer SSDs in servers primarily because RAID controllers didn't support TRIM. Have they made any major improvements to TRIM or Garbage Collection?  Do any RAID controllers at this point support TRIM? or are you still limited to Enterprise SSDs/NVMes in servers for power protection and garbage collection?
I am running Exchange 2016 on Server 2012 R2 Std.

My server has 3 RAID Volumes.

relative to "diskpart detail disk":

Disk 0 (2 partitions, Volume 0, Volume 1)
Disk 1 (1 partition. Volume 2)
Disk 2 (1 partition, Volume 3)

My event viewer (log = SYSTEM) has the following warning that comes approximately in a cluster of 4 about once per day:

What does "\Harddisk3\DR5" refer too?  How can I find out?

Is it Volume 3, physical disk 5?

- <Event xmlns="">
- <System>
  <Provider Name="disk" />
  <EventID Qualifiers="32772">51</EventID>
  <TimeCreated SystemTime="2019-03-26T02:02:58.093233900Z" />
  <Security />
- <EventData>
People today are virtualizing servers just for the sake of virtualizing. I started playing. I have an old Server laying around. E3-1230, 16GB memory, Adaptec 6405 controller with three new Seagate 7200rpm SAS drives in a RAID 5 configuration. It is dated but not a real slouch. So I installed Server 2019 Standard the installed it again as a VM and migrated my Server 2012 to it. First thing I noticed on my workstation was that things were running slower. Not to a dead stop but noticeably slower.

   So what the heck. I virtualized a Windows 10 Professional workstation. It doesn't do much but it is so slow doing everything it is painful. I would kill myself if I had to user it every day. Between the virtualized server and workstation I have to be doing something wrong. They just shouldn't be that slow what what I have heard. Both are Hyper-V. I have to be missing a basic setting. Any general help or guidelines on what I could be missing?






Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.