Storage

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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.

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When you are running iSCSI, is TCP sliding window an important consideration? The situation is is Cisco UCS fabric interconnect to a Nexus 5k switch. The switch frequently drops packets inbound from the UCS and this appears to be an issue iSCSI frames from UCS being 1514 bytes which the interface on the Nexus is 1500 and jumbo framing is not enabled. I don't know why the vast majority of frames make it on through yet a significant number (in the millions) are dropped.
The port channel spikes up to about 10Gbps and most of that will be iSCSI. So the connection initiator to target works for the most part. I've planned to enable the jumbo frames as recommended by Cisco so that the 1514 iSCSI will be better processed and not dropped.

But my question is this: With iSCSI, are TCP conversations lengthy or very brief? To what degree would some dropped frames (.003%) in-path cause an issue for iSCSI TCP conversation? Or would this percentage just be noise that TCP connection orientedness should just deal with?
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I need to have general understanding how hosts on vmware works and talks to SAN, how LUN is presented to VM's

is there any good article which shows how VM ware conencts to storage array s and how VM functions
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I have a Hp MSA 2040 SAN storage and there are 2 interfaces http that I can connect to manage it.

Right now, both of them are not working. I try to open the page and it is not replying

How can I fix that?
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Dear Community,
I am looking for cloud backup solution for a G Suite businness
I need a cloud backup solution allowing incremental backup, access rights and granular search.
i need a solution in cloud no physical server and NAS.
Thank you in advance for your feedback.

Regards,
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Hi vmware Experts

i used to use VSAN default storage policy for our VMs

now i created a new policy with to tolerate 2 physical hosts failure

then i start to edit the storage policy for some VMs

my question

how can i see the progress of the changes on this VMs

i mean when i apply the new policy  VSAN should create another replica for the Vdisks for this VM i want to see the progress

and i want to know such action will put huge load on VSAN itself or not


thnaks
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Vmkernel for Fiberchannel

when creating Storage Vmkernel for Fiberchannel , what do we select as option on the screenshot below:
f
I alos would like to know if we can configure Multipathing for Fiberchannel the same way we do it for iSCSI

Thank you
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Storage Terminology [Disk, Partition,Volume,LUN]

I would like to understand the terminology used in Storage in regards to Disk, Partition,Volume,LUN.
If I have forgotten any more terms please advise.

To my understanding,

Disk : is just the physical part that we can see without using any software , in other words the Metal part

let's say the size of the Disk is 1 Terabyte


Partition : is a portion of disk created via a software.. for instance we can partition a disk into 3 partitions : 500 GB , 300 GB, 200 GB
Partition can be formated or not formated, but with NO file system

Volume : is the formated section of the partition.. for instance , partition0 that is 500 GB, can have 3 volumes 300 GB, 150 GB, 50 GB

LUN : is just logical name for a 1 or more volumes ,, for instan ce Volume1 and Volume2 can be referred to as LUN0 , Volume3 as LUN1


Now, is it possible to create Volumes without creating Partitions ?


Please correct me where I am wrong for what have been stated above

Thank you
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I am getting ready to purchase a new Dell T340 server with a PERC 730P (Windows Server 2019 Standard) for a small business client with 15 users.  They use Sage 50 application as well.

Anyway, I have been reading several articles about RAID 6 and RAID 10 and also 10K RPM vs 15K RPM drives, etc.  I will stick with spindle drive than opt for SSDs for this install.  

I am looking at purchasing (2) 300Gb 10K drives for the OS, and (6) 600Gbs 10K RPM drives for the company data/VM files.
 
Not sure whether its necessary to virtualize for this client or not.  I understand it would not be a good idea with a physical server deployment of have AD, DNS, DHCP on it and then also host company data files and a Sage 50 Database, but there current config has been setup that way for over 5 years without issue.

Anyway, I read several articles the other day where they are saying that RAID 10 is "safer" and faster than RAID6.  I find that hard to believe since RAID10 can only incur a maximum of (1) drive) failure but the RAID6 array can sustain (2) disk failure without crippling the whole server.  RAID10 is definitely faster than RAID6, but I think for this sort of deployment the speed differences would not matter or be noticeable.
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Hi,

I have a VM in vmware that is being used as a file server. The files are residing in a LUN that is shared directly with the VM through iSCSI. (It appears as a second drive in windows.)

I want to upgrade the file server and I figure the easiest way to get this done is put up a new VM on the same Host and make another direct iSCSI connection from the VM to the ISCSI target (the same LUN). This way I will have all company files instantly without having to use any backup/restore software and save on SAN space.  

Does this make sense? If it does,then what will happen to all my ntfs/sharing permissions that were configured on the old file server. Will they be transfered also since the LUN was moved?

Thank you.
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We have a bit of a situation with our Exchange storage, looking for recommendations.  We are very close to running out of space on a disk partition on our Exchange 2007 server.  This partition currently holds a critical mailbox database.

This server is our only Exchange server.  (It also connects to Exchange Online Protection, for spam filtering only.)

In the medium term, regardless, our goal is to migrate all our Exchange data and services to a new Exchange server, and eventually to Exchange Online.

But our challenge right now is in the short term, we need to get this partition enough free space to allow our existing Exchange and backups to keep operating reliably.  Probably, that means getting it up to something like 10% free space or more -- currently it's only got 6 GB free, which is around 2% of its capacity.



The partition is a 275 GB partition at the start of a logical drive (old HP ProLiant with P410i RAID).  It has 3 other partitions after it, so there's no easy way to expand it.

There is no significant space available on any of the other disk partitions on the Exchange server at this point, either -- the server's internal storage is at capacity.

(By contrast, we have lots of available storage space on our vSphere cluster in the same (gigabit) LAN.)



The bulk of the data on the partition consists of one large mailbox database, which Windows says is about 225 GB -- plus its transaction logs which are a few GB.

Also living on this …
1
There is the warning flashing indicator light on the MD3200, and it is a failed battery for the cache on
one of the raid controllers. I just received the replacement battery from Dell (and not sure how to replace it). Somebody would give me the instruction to do it safely please.

Thanks,
tjie
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I have a library on a cd emulation usb drive. The computer describes it as a cd drive. When it is inserted the first time, it works properly. If it is removed, the system no longer recognizes it and it doesn't appear. Sometimes one of the ports reports error 47

Code 47 error is one of the common device manager code errors generated for peripheral devices. The full error message is Windows cannot use this hardware device because it has been prepared for “safe removal”, but it has not been removed from the computer

The device does not come up as a device that needs to be disconnected. How can this be repaired?
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Need to provide our Hardware Team with a formalized Disk/LUN description for our RAC database.  In other words my hardware peer are requesting an official Interface Control Document (ICD).  Can someone point me to the direct section in the Oracle RAC Database 12.1 for x86 documentation discusses disks setup for ASM?  Need a step-by-step procedure so that our hardware team can provide the initial disk configuration, prior to my database team running through the database installation steps.
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can i use the samsungNVMe 960 EVO disk with the H97M-PLUS board?
it's specs say :  Intel® H97 chipset :
1 x M.2 Socket 3, with M Key, type 2260/2280 storage devices support (both SATA & PCIE mode)*1

but i got weird issues when trying to install windows10 from USB
or do i need a driver?
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Datastore conflicts with an existing datastore when trying to add a ESX 6.7 hosts into a VCenter cluster.

This happened when I applied the lastest non-critical and critical patches to ESXi host 6.7U3. The VM's were moved to another hosts and the hosts rebooted but it was in disconnected state and when I went to try to connect it to the VCenter cluster after 15 minutes, I got the "Datastore conflicts with an existing datastore" error.

I removed the hosts from the inventory and tried again but got the same error. It did notify me of the database in conflict but the vm1 numbers for the datastore naa on all hosts is the same.

3 x ESXi Hosts 6.7 (2 are in the cluster). The third is the one I am trying to re-add.

I have the following enabled:

VSphere DRS On
VSphere HA On
VM EVC Disabled

Storage Cluster Manual Mode
VSphere Storage DRS On

What is the recommended procedure to re-add the hosts and clean up the Datastore conflict.

Thank you,
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We have an older LSI MR9240-4i in our server. It has got 2 RAID-1 (SSD) systems. One with Samsung 840 PRO (512 MB) and the other one with: Crucial_CT1050MX (1000 MB).
The Crucial-based-RAID1 is 3 times faster as the Samsung-based-RAID1.
hdparm -t (Crucial-RAID): 478.22 MB/sec
hdparm -t (Samsung-RAID): 160.35 MB/sec

Has anybody a clue what could cause this ?
I have thought about ugrading the firmware in the Samsung SSDs.
Uwe
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several years ago, experts of EE were granted free software from Paragon, like disk manager
is this system still valid?  and if not,  when did it end?
is it is still valid - how can i continue obtaining the softwares?
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I am running an dell r720xd esxi 6.0.0, 15169789 lab.  I create a volume on an Equallogic ps6500. on the lab host, set my access policy and added the iscsi initiator. On the host i have 4 nics. 0 an 1 for management. 2 and 3 for vm traffic and iscsi. The host shows the iscsi vmkernal bindings are compliance and after setting dynamic discover for the dell equallogic group IP, it finds the LUN. However it shows the iscsi path as not used and the paths are not visible. whats weird is that i can ping only one of the equllogic NIC's (192.168.100.115) from esxi and not the others nor the group IP. (192.168.100.150). I can ping the iscsi VLAN gateway from the host lab (192.168.100.1).  from another host connecting to the same SAN i can ping all.  on the lab server iscsi is set to jumbo frames. i have tried to remove the iscsi adapter from the host and reboot/re-add but the same behavior.  I have two other hosts that i was able to connect to the LUN with no issues so i know its something with my lab host.  Any thoughts on what i may be missing are appreciated.

 
Annotation-2020-01-22-1252144.jpgAnnotation-2020-01-22-1247310.jpgAnnotation-2020-01-22-124730.jpg
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Hi,

I want to completely uninstall Exchange Server 2007. I have removed user mailboxes, removed public folder database, removed user mailbox database, removed storage group, deleted offline address book and removed exchange administrative group, but when I want to uninstall the server from I get this message:

Error:
Exchange server "SERVER NAME" was not found. Please make sure you have typed it correctly.

Error
The server name is correct.


How can I then uninstall the server?

Thanks,
Ronnie
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I asked this question about 3-4 years ago. At that time the death combo was a Dell Optiplex 3040 and a Intel SSD drive. The issue was that on occasion the computer would boot with a "hard drive not found" error. The fix was simply to power down the PC then turn it back on. I found a thread about Intel SSD drives doing that in Dell Laptops but no references to it happening in Dell Desktop.

   As a little side note I have since ditched Intel SSD drives. They are pieces of junk but anyway.... today I had a customer call and the same thing happened to a Dell Optiplex 3070 (the most recent model) and you guessed it.... an Intel 540s Series SSD. So the problem with Dell Optiplexes and Intel SSDs still exists. Has anyone else come across it yet and is there a fix?
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Hello Experts,

I have a task for a friend of mine and we purchased a server Lenovo Thinksystem SR590 and it has all these drives, As I was going through the specifics I noticed the VMWARE is preinstalled.

My 1st question is the vmware is preinstall does that mean I can turn it on and give it an IP and I should be able to access it using the VSPHERE. Do I need to do anything to setup the Hypervisor ?

My 2nd question is with all these drive how can i setup the storage , I need to provision the DC server, SQL SERVER, Application SERVER 1,Application server 2 and Application server 3 storage requirements.

1. If any one can send me a instructions on how to provision the storage for the Domain Controller server.  I want to give two volumes  one for C drive  and one for D volume in some applications servers and the file share server.

In vsphere I go into configuration --> storage - discover , will these drives show in the disk layout ? or I have to do anything here


Below is the specs of this server :

•      ThinkSystem 2U 3.5" SATA/SAS 8-Bay Backplane
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•      Select Storage devices - no configured RAID required
1
•      ThinkSystem RAID 530-8i PCIe 12Gb Adapter
1
•      ThinkSystem 3.5" 2TB 7.2K SAS 12Gb Hot Swap 512n HDD
1
•      ThinkSystem 3.5" PM1645 800GB Mainstream SAS 12Gb Hot Swap SSD
1
•      ThinkSystem 3.5" PM883 960GB Entry SATA 6Gb Hot Swap SSD
2
•      ThinkSystem M.2 Enablement Kit
1
•      ThinkSystem M.2 5100 240GB SATA 6Gbps Non-Hot Swap SSD
1
•      VMware ESXi 6.7 …
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We have NVR recorder WH-D5216 with SATA 4GB HDD (less than 3GB avail).  About 5 yr old system.  Overwriting option is enabled.  Retention policy almost a month with a motion detection enabled.

The system skipped recording (50hrs) earlier this week.  But recovered on its own.  Looks like the drive gave up today again.  And looks like its for good this time.   Shows 0.00 GB space with Status ERROR. I assume is time to replace the drive, or the entire system.  Its SATA HDD. Tried to boot remotely twice  no luck.

Is there a limit on how many times the HDD can be overwritten?
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One ESXi host cannot ping its NFS targets.

So obviously the NFS datastores show inaccessible. For reference, every other ESXi host work fine and can ping its NFS targets.

Every host has the NFS portgroup with the vlan and vmk/uplink settings are exactly the same with the exception of one of the physical NICs has no CDP information and the "Networks" section under CDP shows empty if I remember correctly. No indication that the uplink is down so could this still be a UCSM/Fabric upstream switch issue?

Thanks again
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How can I disable "USB storage" on the
below #4 via gpedit.msc or something else ?

Details
  ** Operating System = Windows 10 Pro
  ** Location = Home
  ** Domain = NO

Steps
 1. I login as me
 2. USB storage works
 3. my 5 year old logs in
 4. no USB storage since I do NOT
    want child to copy data from
    bad USB drives onto PC
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We're trying to implement a GPO that will block USB storage devices.
It appears that there are at least two approaches at the broad design level:
1) Apply the GPO to users.
2) Apply the GPO to computers.
We tried applying a new GPO to users like this:
  • Set up a User's Security Group
  • Set up a GPO with Scope including the User's Security Group
  • and with Authorized Users having READ and NOT Apply GPO
  • Then, the GP settings for removable storage are added as well
  • Then the GPO is linked to the User's OU
  • Then blocked Users are added to the User's Security Group
It didn't work for us.  

The other approach would seem to be:
  • Set up an OU of Computers
  • Create a simple GPO with the same settings for removable storage
  • Link the GPO to an appropriate Computer OU or set of them
  • Move pertinent computers into the appropriate Computer OUs

I haven't done the latter yet but I have more confidence in it.

Any suggestions?
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Storage

43K

Solutions

36K

Contributors

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.