Primarily questions about disk storage, sometimes questions about application storage or cloud storage. Always questions about storing data.

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4
votes
3answers
296 views

Should I worry about Split I/O in a SAN?

We have a NetApp Storage system presenting LUNs to a few Hyper-V clusters. When running a system performance trace (in perfmon) on a 2008 R2 there's a warning about a "high level of Split I/O". ...
1
vote
3answers
629 views

How many IOPS do I need? My workload bottleneck is storage

How can I know how many IOPS I need my storage to deliver for my overloaded Linux server? I have a server and I know it has storage as its bottleneck. I would like the bottleneck not to be storage, ...
1
vote
2answers
245 views

Portable SAS Drive (USB/Thunderbolt Interfacing)? [closed]

I have a few spare 2.5" HP SAS SSDs sitting around and collecting dust for about 2-3 years now. They were used for about 1 day in another project that ended rather abruptly. I now have a need to ...
0
votes
0answers
41 views

Cinder storage on windows storage server

I am planning openstack deployement and considering such solution: cinder volumes on Windows Storage Server: http://www.cloudbase.it/cinder-volume-on-windows-storage-server-2012/ and compute ...
1
vote
1answer
437 views

interpreting IOPS these Bonnie++ and iostat results

I am looking to interpret the IOPS from a few runs of bonnie++ using iostat simultaneously and using the benchmarking from this post: Can I determine IOPS on a disk array using bonnie++? bonnie++ ...
8
votes
3answers
443 views

General Advice about an archive solution. ~15tb and growing.

I need a better storage and archive system for my small business's files. Specifically the files are completed video projects. Beyond time and cost limitations what is holding me back is I don't ...
0
votes
0answers
130 views

zfs recovery after hardware failure

My ZFS storage hardware failed including the rpool disks. I installed a new server and tried to import use zfs import -f poolname. I am able to see the pool and the disk utilized. But I am not able to ...
0
votes
1answer
413 views

How to set up direct access storage between a BL460c Gen8 (Win Server 2012) and D2220sb storage blade

I have installed a D2220sb storage blade in a c3000 enclosure. The storage blade's partner device is a HP BL460c Gen 8 Server. How do I setup a direct access storage? I have googled and tried to ...
-2
votes
1answer
38 views

Remote storage on ubuntu server

I have an Ubuntu server having limited storage, 30GB. I need extra 100GB, how can I have a remote storage or remote drive which does not occupy local space? Cloud services like dropbox take local ...
0
votes
1answer
361 views

btrfs: Looking for experience on btrfs error modes on bad sectors / read errors / medium erros

While running a Hadoop cluster that uses HDFS (so data is already replicated 3x) we experience often issues with ext4 because some bad sectors (the filesystem is unable to read or write to them) ...
0
votes
0answers
506 views

Detect Fibre Attached Tape Drive in Red Hat Linux

I am running Red Hat Linux 6.4 and I have one Fibre Attached Tape Drive which is not visible to the OS. I also have the WWPN of the tape drive. The server has two Qlogic HBA Card with two port each. ...
1
vote
2answers
274 views

Why I cannot initialize disk to MBR in server 2012 with the new Server Manager?

Why I cannot initialize disk to MBR in server 2012 with the new Server Manager ? just GPT is allowed?
-1
votes
1answer
146 views

How to replace NVRAM battery in BlueArc storage?

The RAID/NVRAM battery on a BlueArc Mercury storage host is located in the front of the storage head, and can be replaced without down time. From what I can gather, after battery change, I have to ...
1
vote
1answer
115 views

Install ESXi for 2 servers on Dell Array

I have 2 Dell servers: PowerEdge R710, Dell PowerConnect Switch 6224 and an array: Dell EqualLogic PS4100. I need to install ESXi on my 2 servers. (Im just learning about VMWare, SANs, I have only ...
0
votes
0answers
47 views

How to benchmark a whole storage infrastructure

I'm a 100% sure that I'm not the first one to consider benchmarking a whole infrastructure, but yet I haven't found any relevant information on how to face this challenge. As I guess we all know what ...
4
votes
2answers
1k views

2012R2 Storage Spaces Memory and CPU requirements

I am looking at possibly using Storage Spaces in Server 2012R2 to build a NAS off of. I am looking to build a fairly large unit, 12-14 HDDs, in a "RAID10" like setup (I know storage spaces does not do ...
1
vote
1answer
61 views

Veritas and VNX LUN Expansion

I have an EMC VNX Storage array and a front end Linux server running Veritas. A 4TB lun has been assigned from a diskpool on the VNX and presented to the server where Veritas has split it out into ...
6
votes
1answer
163 views

IQN Naming convention

I've seen a lot of information about how IQN's should be formatted, but there's not a lot of information on how to build them. I'm kind of a newb when it comes to iSCSI, and i have it working, but I'm ...
0
votes
1answer
115 views

LSI Megaraid 150-6 as regular SATA controller

I have an old but reliable server board that does not have any SATA ports on it. Also i have LSI Megararaid 150-6 (with latest firmware) which i want to use as ordinary "dumb" SATA controller. I ...
3
votes
2answers
164 views

Can a 7200RPM drive transfer speed at a full 6 Gbit/s?

Many vendors sell 4GB SATA and Nearline SAS drives which spin at 7200RPM. The vendors will advertise a 6 Gbit/s interface with no mention of actual data transfer speed. I've had conversations with ...
1
vote
1answer
153 views

Additional Storage Options for Hadoop HDFS Nodes

We have a small production Cloudera distribution Hadoop cluster(14 nodes, but growing). As we have expanded our usage of this cluster we have found that disk storage is our biggest blocker and ...
11
votes
4answers
985 views

Disk Speed Performance in a SAN

We are currently looking into buying a SAN, and have some concerns over the speed of disks we are going to put into the array. We would normally have gone for 15k disks over 10k every time, but one of ...
4
votes
1answer
96 views

UCS FC Adapter Aborts

So here's the scenario, and I'm hoping @Chopper3 can chime in here. For our SAN fabric, we have a pair of Cisco MDS 9513 FC switches with three EMC frames and four Cisco UCS domains directly attached. ...
0
votes
1answer
45 views

I want to enable Blob Storage for my website, will this plan work?

My current setup is a website hosted with Azure Websites. Unfortunately, due to site growth, I need to enable Azure Blob Storage on the site, but it's not as easy as flicking a switch. My plan is to ...
0
votes
1answer
77 views

Scalable NAS: on-premise and minimum of 6 TB [closed]

Shying away from the trending cloud storage and hosting a website on an on-premise 6TB storage, what would you recommend for a scalable NAS. Strictly, the storage solution requires on-premise and ...
0
votes
0answers
133 views

XenServer 6.2 - Free disk space is less than 20% on volume /

On XenServer 6.2 standalone instalation there is less free disk space than 20%. In my monitor I see this. I found there tons of *.gz in /var/log. Now storage is on 76%. Do you know how to solve ...
7
votes
1answer
295 views

Which block sizes for millions of small files

I have 2x 4TB Disks in hardware RAID1 (it might be a LSI MegaRaid) on Debian Wheezy. The physical block size is 4kB. I'm going to store 150-200 million of small files (between 3 and 10kB). I'm not ...
1
vote
1answer
114 views

libvirt Storage Backend

libvirt supports several storage backends[1] for hosting the image on a different server. We have 6 servers running about 40 VMs. Up to now we use local storage, but to minimize the downtime we want ...
2
votes
3answers
109 views

How to combine storage from different linux servers across public network

I have dedicated hosting servers of 2 TB each, (7 of them) . Now i want to combine the unused space from them and converge them into other server . Note that the servers have public network . Found ...
0
votes
0answers
64 views

EMC + powermt display + dead error

I have Linux red-hat 5.5 cluster machine that connected to EMC storage When I perform powermt display command I see under dead line the number 1 In place to get normal state as 0 Please ...
2
votes
0answers
99 views

Infiniband link is at 4X SDR with DDR HCAs; has anyone seen this before?

I've recently upgraded my Infiniband HCAs from SDR to DDR, however upon upgrading, it has not improved the link speed at all. Receiving the following output from 'iblinkinfo': CA: ip-san-1-au3a ...
1
vote
2answers
137 views

Indepedent pairs of RAID 1 is superior to RAID 10

I am rather new to databases. I was reading up on RAID Storage and it seems that the consensus is that RAID 10 is RAID 10 is best is terms of performance and redundancy However at the end ...
0
votes
0answers
59 views

Server 2012: Space not reclaimed after moving files off volume?

When I move files off of a volume on my Server 2012 computer, the space is not reclaimed and continues to show the amount of free space that was available before I removed the file. The volume in ...
2
votes
1answer
146 views

Issue deleting files from a NetApp Windows Share

At work we have a NetApp Windows Share setup. I browse with Windows Explorer to a folder which contained thousands of text files. I then select multiple files at the same time and delete the files. ...
1
vote
1answer
43 views

Prevent NexentaStor analytics page from timing out

NexentaStor has a handy profiling interface that serves as a front to certain dtrace scripts. It's handy for monitoring realtime IOPS or I/O throughput of the appliance. Unfortunately, this interface ...
3
votes
1answer
47 views

How do I properly build a volume group and logical volume for 500GB in AIX?

I've been fiddling around with AIX 5.3.7 for hours today, and I was able to build a VG and LV, but I'm having difficulty using all the space in the LUN I carved out (500GB). I'm not sure if i'm ...
1
vote
1answer
108 views

Storage Spaces adding a mirrored drive later

I am planning to use Storage Spaces in Windows Server 2012 R2. I want to initially set up my sever with 1 hard drive in the storage pool. Is it possible later to add a second drive that mirrors the ...
2
votes
1answer
1k views

XenServer 6.1 Reports Wrong Storage Amount in XenCenter

We're using XenServer 6.1 Advanced on three blades in a pool. I'm in the process of moving storage from an old SAN to a new SAN using Storage XenMotion. So far, so good! I discovered though, on a LUN ...
1
vote
2answers
429 views

OMSA Add new disk and convert current single disk to RAID1

We got our new server last week, and unfortunately one of the two disks could not be delivered. Now we've got the second disk, and I want to install it and join it with the current disk to create a ...
0
votes
0answers
82 views

Data deduplication works vice versa

I have enabled data deduplication on one of my SSD's volumes and then run Start-DedupJob cmdlet with optimizastion parameter on this volume (Windows Server 2012). After dedup completed i check ...
1
vote
1answer
25 views

external mSAS expansion

I got two servers. One with a Intel RS2MB044 and one with an Adaptec ASR-51245, both got an external mSAS connector. I need to connect these tho servers together, basically to share the file system ...
2
votes
0answers
85 views

Shrinking a volume and extending another in dynamic disk

I have a test environment where I converted a disk to dynamic, shrunk a volume, and then expanded another all on the same disk. The result is that disk management in Windows Server 2008 R2 shows two ...
2
votes
1answer
131 views

Rack Storage - Backplane with 20 SATA connectors or backplane with 5 Mini SAS connectors?

I am comparing two rackmount server chassis (Norco RPC-4220 and Norco RPC-4020, FWIW), which are identical except for the backplane connectors. One has 20 SATA connectors and the other has 5 Mini SAS ...
3
votes
1answer
64 views

LFF in HP DL360p, how and is it a good idea?

I need a new server with 10 Tb storage and was looking at a DL360p with a D2600. It would do the trick, but it´s quite expensive and I´m looking for alernatives. 4 x 4 Tb would be enough, both for ...
0
votes
0answers
217 views

IBM Storage DS3400 flashed firmware from 6.x to 7.x, now storage is unresponsive

I actually missed to flash the ESM firmware prior to the controller and NVSRAM firmwares. Current stage is, SMClient GUI cannot detect the storage. I can ping and telnet in one of the controller ...
3
votes
4answers
538 views

Suitability of DL380p-Gen8 + D2700 for SQL 2012 Standard Edition

A question for those who know about HP server performance and SQL... I am trying to spec a suitable server that has the following requirements: Run SQL 2012 Standard Edition (I cannot get approval ...
2
votes
1answer
992 views

How often should I defrag ZFS pools?

I ZFS scrub once a month which takes ~24 hours for the 72TB. For what I can find about how often I should scrub is: very busy pools, once per week not so busy pools, once per month or run a scrub, ...
1
vote
0answers
379 views

windows2012 failover cluster + storage. Considerations

We plan to build a failover storage with Windows2012r2. There will be 2 or 3 physical machines with 2 virtual machines on each server. One virtual machine building a failover, second one being storage ...
1
vote
1answer
60 views

Secure Method for RAID Device Permissions for Network Storage

I manage a smallish network that supports a dozen or so employees. We have about 8 TB of data that lives on several NAS devices. I built a 20 TB RAID file server (with a XFS single partition) recently ...
-1
votes
2answers
166 views

High density disk bay rack chassis - why such a big difference in price?

We're looking for a chassis with 45-60 bays for SAS/SATA disks and we found some 60-bay enclosures at ~ $11000 (see here and here for example - there are others as well). However we found this one ...