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

learn more… | top users | synonyms

0
votes
0answers
14 views

Add more Drives to a RAID controller using a seperate\another SAS expander or Controller?

I have a custom build server. It currently has an LSI MegaRAID LSI00295 (9266-8i SGL) PCI-Express 2.0 x8 Low Profile SATA / SAS RAID Controller configured with 8 3TB drive in RAID 6. Can I add more ...
-2
votes
0answers
16 views

Offline storage vs Cloud storage for a search engine [duplicate]

I need to store html pages from a web crawler on persistent storage. The information will be read at a rate of <1 GB/day and written at a speed of >10 GB/day since it's not a public facing search ...
1
vote
1answer
67 views

ESXI 6.0 u2 multipathing configuration with group by prio

Is it possible to change the path grouping policy of ESXI 6.0 multipathing to group_by_priority? In essence I want to work with the grouping priorities given by a SAN storage. I didnt see any specific ...
-2
votes
1answer
68 views

What incident may happen that stops a VM on Azure?

We were hosting a Website and a CMS at an external supplier. They told us that they host everything on Microsoft Azure. Yesterday I saw that my website was down and contacted them. Later that day they ...
0
votes
0answers
24 views

Confusion on how to hotswap dm-x device in software raid

Below is the dump when I do lsblk cat /proc/mdstat lmsetup -ls. So sde is dying and I would like to replace it. What i'm confused is, in lsblk it shows sde is part of md3 (software raid). but when I ...
0
votes
0answers
17 views

nas4free partitioning os drive [Nas4free]

I tried the nas4free forums but it doesn't seem that responsive so I am going to try my luck here. version: 9.2.0.1 - Shigawire (revision 972) My boot drive is in raid 1. One of the hdd is ...
3
votes
1answer
50 views

Four lane SFF-8088 to SFF-8470 cable, 6G/12G

I need a couple of SFF-8088 to SFF-8470 cables and the HP manual says the HP 408771-001 is the right one for me. My hardware dealer has them in stock for about 100$. I browsed a bit and found the HP ...
-4
votes
0answers
31 views

Storewize V7000 GUI

Hay can you give a advice about problem GUI in V7000? what should i do if the GUI page didnt show correctly?
1
vote
0answers
14 views

MegaRAID Rebuild required after PdOffline + PdOnline?

In a RAID6 array with 12 disks I have taken a disk offline to flash new firmware, then brought it online again: MegaCli64 -PdOffline -PhysDrv[8:0] -a0 MegaCli64 -PdFwDownload -PhysDrv[8:0] -f ...
0
votes
0answers
10 views

Choosing Block Size and I/O oustanding For Benchmarking Storage System

I have two quenstions. What is the recommended block size for benchmark a storage system, as I know many people would use 4K for random test but for sequential I am not sure whether to use 128K or ...
0
votes
1answer
32 views

VMWare and storage virtualization solution [closed]

I'd like to use the capabilities of two Dell EqualLogic SAN and a VMWare vSphere 6 installation to implement a storage virtualization solution. Basically I'd like to put virtual SAN layer above my ...
0
votes
0answers
30 views

Advice needed about RAID and partitioning new server

first of all i want to appolagize if i doublepost. Plese merge this with similar post. Thank you. Now about the situation and the system we are trying to build and want an advice from experienced ...
3
votes
3answers
845 views

Is using nested RAID 6+1+0 a good idea?

Currently I have 24 disks of 500 GB, and I would like to create a bigger nested RAUD using a Dell Power Edge R730 server, having 4 times RAID 6 with six times 500GB each, over them I want to add RAID ...
2
votes
1answer
38 views

Different IOPs measured on server and storage

so I have this strange behavior that I can not explain to myself - hopyfully someone here can. We received some server (hardware) and mounted an NFS drive. We plan to use these servers as Splunk ...
0
votes
1answer
18 views

How to calculate storage working set for sizing SSD/Flash size for tiered storage?

How would you calculate the size of the working set of storage that would live in a SSD/Flash tier of a tiered/hybrid storage solution? This would be used to gauge the size of the SSD/Flash tier. By ...
1
vote
1answer
41 views

Slow shared NAS storage for VM cluster

I have a problem with a very slow virtual machines. I have two HP DL380 G6 servers in the cluster that are connected to the Synology NAS 2416+. Everything is connected via the HP 1620 Switch. On the ...
1
vote
1answer
31 views

How can I determine which files have high I/O in Windows?

In trying to reduce the storage bottleneck on a Windows server (2008 R2) I need to find the files that have the highest I/O over a long period of time (aka 'hot' files) so I can move those to SSD ...
0
votes
1answer
64 views

Server 2012 R2 — Using Storage spaces with hardware RAID?

I'm studying for MCSA using Server 2012 R2. I'm running a Dell r610 rack server with a perc6/i controller for hardware raid. Hardware raid is set up with a virtual array in a RAID 10 configuration. ...
1
vote
1answer
37 views

What are storage consistency groups?

Can anyone explain to me what 'consistency groups' are in the context of storage solutions? How can I use them in the real world? It seems every vendor has its own proprietary terminology for storage ...
1
vote
4answers
135 views

Move existing workload to windows 2012 R2 tiered storage, sizing

I have a Hyper-V host that has it's performance bound by the storage subsystem, which is a RAID 10 array. I'd like to add two SSD PCIe cards and use them to create a mirrored fast tier using Windows ...
1
vote
1answer
22 views

Does ESXI Require New Drives Be Part of a Datastore to be seen by Virtual Hosts?

I posted a similar question to SuperUser and got not response, so I apologize if I've broken rules by posting here, but I'm at a crossroads on my server setup and need a bit of help. I am new to EXSI ...
9
votes
2answers
354 views

Can you connect a SAN directly to a HBA with Fibre Channel?

I am in the process of sourcing our company's first SAN as we have the need for high availability/shared storage. I have noticed fibre channel switches are extremely expensive, and for redundancy we ...
-1
votes
1answer
24 views

Move Unallocated Space Between Disks

I am running Ubuntu's latest LTS. In /dev/sda I have sda1 and sda2, both are using a couple hundreds of MiB with a couple of GiB allocated. So far so good. In /dev/sdb I have just one partition, sdb1 ...
-1
votes
1answer
24 views

RAID 10 (2+2) and (4+4) - terminology or physical setup?

I understand what RAID10 (2+2) is (stripped mirror) whereby there are data are striped across 2 groups and each group have a pair of mirror devices (2 disks). This is how i have understand "2+2" For ...
2
votes
1answer
38 views

Foreign cards in a HP server, do they cause the server to operate outside of specs?

I have a Proliant DL380 G7 I am going to be staging as lab server. As part of the server I plan to run ZFS as the base filesystem and installed 2 LSI 9211-8i cards for the disk controllers since the ...
0
votes
0answers
9 views

Is there an overlay filesystem that can migrate data “up” with use?

I miss some functionality that I think would help migration, typically from an old NAS to a new NAS, but there would be other use cases as well. If a company purchases a new NAS and wishes to migrate ...
0
votes
0answers
19 views

Using Dell Omreport on Dell attached storage

Hi I have a Dell Powervault 1220 mounted to a PERC H800 (/dev/sda) I'm really confused on how to use dells monitoring software, srvadmin. According to this question, I should use omreport. However, ...
1
vote
1answer
25 views

Can I convert my Dell NX3000 server to a disk-based storage device?

I'd like to go away from tape backups if possible, so I'm wondering how I can go about converting this dedicated NAS server into something I can use to hold the backups of my new file server. If it is ...
2
votes
0answers
46 views

Dell Data Collector Manager not showing Storage Center

In one of our environments, Dell Enterprise Manager Data Collector doesn't seem to connect to my Storage Centre. The logs shows that "Storage Centre Controller Cannot connect to the configured ...
0
votes
1answer
19 views

Bacula storage daemon won't write to labeled volume

My Bacula configuration won't write to any labeled volume, as long as it's outside of /tmp. When the SD is configured to write to /tmp however, everything works flawlessly. [herpderp@neuromediator2 ...
-1
votes
1answer
49 views

Best and cheapest way of expanding storage on a server

I provide photo editing services, so customers send their photos to me through website, and I send them back through website once edited. I need about 1TB storage when I keep files for 1 month. I'm ...
1
vote
2answers
36 views

One disk member of two Disk arrays

I will start with my question and then make a short example: Is it a good idea to split a disk into multiple partitions and create different disk Arrays (raid1/raid5) with those paritions? Are there ...
0
votes
0answers
30 views

Does Windows Server Storage Server have problems with RAID6 iSCSI?

I adopted a virtual Windows Server 2012 Storage Server that has 4 QNAPs attached via iSCSI. The storage environment is connected via iSCSI through a Cisco SG300 (Gigabit); jumbo frames is not ...
0
votes
1answer
15 views

What does fast small block random reads and writes do for enterprise SSD?

Since I don't have a background in hardware storages, I've read some articles to learn about the comparison between consumer and enterprise SSDs. I'm confused of what makes enterprise SSDs perform ...
1
vote
1answer
83 views

What speed should I expect from an MSA60 attached to an HP p212

I have an HP DL380 G5 with a P212 controller and a 256MB cache card/battery. The P212 is hooked up to an MSA60 enclosure, which for testing, I have populated with 8x 500GB 7.2k SATA disks. I know ...
1
vote
1answer
54 views

Dell R730 with QLogic 2660 16Gb FC HBAs connected to a Brocade 300 8Gb FC Switch? Will it work?

We have a standard shop with 3x Hypervisors running VMware vSphere 6.0. The hypervisors are currently connected via 8Gb FC link to a Brocade 300 (8Gb FC) switch, which is then connected to our ...
1
vote
1answer
60 views

Selecting an SSD to act as boot volume in an HP server

A question I recently asked regarding the use of enterprise 10k vs. 7.2k midline SAS disks led to some suggestions that the use of a mirrored pair of SSDs as a boot volume can make sense because: ...
0
votes
0answers
47 views

Is mapping a docker volume to the host “bad” for production?

My main need: to be able to map a volume defined in a Dockerfile to a different physical storage tier (which is already a logical volume in the host). This volume is in /data in the host OS: # df -h ...
0
votes
1answer
29 views

How to distribute file storage to a different filesystem with Ubuntu 14.04?

First of: I just got started using CLIs to manage a whole server, sorry if this question is stupid, but I couldn't find any solution to this. I ran into a problem with apt-get -f install, because my ...
1
vote
2answers
231 views

How to decide between a docker volume container and a docker volume?

After reading the docs I found myself somewhat confused as to how best to manage productive application/service data. There seem to be 3 options: Simply map volume to host directory (i.e. -v ...
0
votes
2answers
39 views

Nginx - Caching/processing of data when uploading a file over a reverse proxy

I am running multiple Virtual Machines (Proxmox) which each have limited storage amounts. As I am also running a File-Uploading service, I am interested if a Reverse Proxy needs more than 30GB of ...
1
vote
1answer
79 views

How to hook up a Supermicro JBOD expander to an HP DL380

I'm totally new to the subject of high-availability / distributed storage, and have to figure out a solution for a particular project. I am looking at using Windows Server 2012 R2 Storage Spaces to ...
1
vote
1answer
52 views

Management interface/SSH no longer working for HP MSA storage array

I'm having issues accessing a storage array through the web interface/SSH on a MSA2324sa. I already emailed HP however I was wondering if anyone has ran into this. When I try to access the interface ...
19
votes
3answers
2k views

Can “enterprise” drives be safely replaced by near/midline in some situations?

When specifying servers, like (I would assume) many engineers who aren't experts in storage, I'll generally play it safe (and perhaps be a slave to marketing) by standardising on a minimum of 10k SAS ...
3
votes
2answers
406 views

ZFS 100TB hardware setup

We received a quote for the following server setup : Intel Xeon E5-2609V2 2 x WD RE 2TB SATA III 34 x WD RE 4TB SAS II 32 GB memory (ECC) LSI MegaRAID 9271-8i bulk, 8 x SATA III/SAS II internal ...
0
votes
1answer
45 views

IOmeter: Avoid caching and Raw Devices

When testing IOmeter I know always need to be avoid hitting the cache if the logical drive with the OS is testing, some I have some question about it: Do I need to avoid the memory on the controller ...
3
votes
0answers
39 views

SAS expander or better controller?

In the past, servers I've put together have all had 8 or fewer disks, so I've not had to give the storage controller much thought - a standard controller like the P440ar (my experience is with HP) ...
0
votes
1answer
146 views

Are bcache and/or dm-cache considered stable for production in 2016?

I would like to use linux SSD caching (dm-cache or bcache) with Debian Jessie production servers. (kernel 3.16) My question: Are dm-cache and bcache modules reliables in linux 3.16 ? Do I need to ...
0
votes
1answer
20 views

Purpose of '.status' VHDs that are created when booting an Azure VM

I'm using the Portal (portal.azure.com) and choosing the Resource Manager view when booting an Ubuntu VM on Azure. I'm seeing that there are two vhds that are created as part of booting the Instance. ...
1
vote
0answers
161 views

Docker no space left on device [closed]

I have a Fedora/couchdb image running on my home server for the purpose of storing data collected for research. However, I recently had a problem accessing the CouchDB interface and so I attempted to ...