NAS stands for Network Attached Storage, a mechanism for providing file-level access to storage across a network.

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26
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2answers
2k views

What is a Storage Area Network, and which benefits does it have over different storage solutions?

I'm proposing this to be a canonical question about enterprise-level Storage Area Networks. What is a Storage Area Network (SAN), and how does it work? How is it different from a Network Attached ...
22
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5answers
25k views

What is the difference between SAN, NAS and DAS?

What is the difference between SAN, NAS and DAS?
17
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17answers
20k views

What network file sharing protocol has the best performance and reliability?

We have a setup with a few web servers being load-balanced. We want to have some sort of network shared storage that all of the web servers can access. It will be used as a place to store files ...
14
votes
1answer
9k views

NAS Performance: NFS vs Samba vs GlusterFS

I am planning my new shared storage infrastructure for a small webserver farm. Therefore i ran a lot of tests with a lot of NAS filesystems. By doing so, i got some unexpected results and would like ...
13
votes
8answers
1k views

RAID configuration for large NAS

I'm thinking of building a 24 1TB disk NAS box, but I'm not sure what the best drive configuration is. I'm looking at using the areca ARC-1280ML-2G controller, and hanging all 24 drives off of it. ...
13
votes
7answers
10k views

SQL Server Files Local or NAS or SAN?

I have to install a new Server with SQL Server 2008, What do you recommend, One server with Raid 10 or the Files in a NAS? What about iSCSI should I use it? What about SAN? The server has 4Gb of ...
11
votes
3answers
4k views

Networking Units: Not getting expected performance from 100Mb Ethernet

Our company has a brand new NAS, and the idea is that we will be able to use it for fast, shared access to our data on our network. It's a fairly simple 2-disk system, but from what I understand, it ...
10
votes
9answers
17k views

What is the “real” difference between a NAS and NFS? Or, why pick a NAS device over “mere” NFS? [duplicate]

From an end-user perspective, what is the difference between a NAS device and using NFS exports from a file server? They seem to accomplish the same end result. The difference between a SAN and ...
10
votes
10answers
12k views

Should I build my own or buy a cheap NAS? [closed]

I've looked at this question and gotten some ideas from it. Assume I want something that runs quietly with raid support. I see the choices as being buy a home NAS solution most of which appear to be ...
10
votes
7answers
2k views

How do you backup a storage server?

I'm looking at implementing a very large storage server to be used as live NAS for several other servers (all Linux-based). By very large, I mean between 4TB and 20TB usable space (although it's ...
10
votes
9answers
1k views

Scalable (> 24 TB) NAS for research department

I have been asked to provide a new fileserver to store our medical images (raw format, not dicom). As we have no IT staff, I have to find a solution, and I hardly know anything about this topic. The ...
8
votes
5answers
1k views

Is brand-name NAS overpriced?

NetGear's ReadyNAS 2100 has 4 disk slots and costs $2000 with no disks. That seems a bit too expensive for just 4 disk slots. Dell has good network storage solutions too. PowerVault NX3000 has 6 disk ...
8
votes
1answer
11k views

SSH access to Apple Time Capsule

Is there any way to install or activate sshd in an Apple Time Capsule in the way you can download dd-wrt and install custom firmware on a netgear router? I'd like to enable sshfs access to Time ...
7
votes
12answers
5k views

Best way to build home NAS with redundancy [closed]

I need a NAS device for my home network to get these high value files off my laptop (family photos, music, coding projects, etc.). My goal is cheap and reliable. I have a spare old PC laying around ...
7
votes
3answers
513 views

What is the use-case for NAS on a mid-to-high end storage array?

Many large storage vendors (EMC, NetApp, etc) provide storage equipment that does NAS in addition to FCP, FCoE, or iSCSI. When would it be appropriate to use the NAS functionality of these boxes? In ...
7
votes
2answers
673 views

ZFS RAID and LUKS encryption in Linux

I'm planning to setup a set of 3x 2TB 7200rpm drives as a LUKS-encrypted Z-RAID pool in Linux (for a NAS solution). My understanding of the problem at hand is that the only way to achieve this is to ...
6
votes
2answers
232 views

Information on Windows Home Server [closed]

I have been wrestling with whether to invest in a Windows Home Server (WHS). While the positives are pretty apparent: backups, remote access, low power consumption; I have not found a lot of ...
6
votes
4answers
2k views

What Makes Cloud Storage (Amazon AWS, Microsoft Azure, google Apps) different from Traditional Data center storage networking (SAN and NAS)?

Some confusion because of my question so to make it simple : "What kind of storage do big cloud providers use and why?" As far as i understand, however I am not able to find any kind of official ...
5
votes
2answers
825 views

Suggestions for a NAS for VMware storage [closed]

I have been looking at Openfiler, and it appears to be a great open-source solution. I haven't seen very much documentation on limitations of OF. We are by no means a Fortune 500 company (yet:) so our ...
5
votes
6answers
563 views

Capacity Optimization / Deduplication Options for Primary Storage

I'm exploring options for making more efficient use of our primary storage. Our current NAS is an HP ProLiant DL380 G5 with an HP Storageworks MSA20, and one other disk shelf which I'm not sure what ...
5
votes
3answers
652 views

Recommendations: configuring a 10GbE NAS stack for virtualisation storage

I'll try as hard as I can to word this so it is not considered a shopping list. We have been successfully running a dev/test ESXi environment for some time, with a couple of Dell PE2950III servers ...
5
votes
4answers
3k views

SAN or NAS 100-200TB - where to start looking? [closed]

I'm starting a project to consolidate a bunch of data and make it available on our LAN. I'm thinking that we may have a need for anywhere from 100-200TB at any one time. What factors should I be ...
5
votes
2answers
113 views

Array free space requirement

The general rule of thumb is don't use more than 80-85% of your capacity, otherwise performance degrades sharply, and other bad stuff may happen. On a 8TB array, this comes out to around 1.6TB of ...
5
votes
2answers
2k views

Malformed rsync command on ReadyNAS

I'm trying to set up rsync backups on my ReadyNAS and I'm getting the following error: ERROR: The remote path must start with a module name not a / This error is accompanied by the following ...
5
votes
1answer
447 views

Is using a NAS with hot swap disks an effective way of cycling backups?

We are looking at improving our backup solution. We don't have a huge amount of data to back up (currently ~500GB) which is backed up nightly onto an external HD. We have 3 of these HD, with one going ...
5
votes
3answers
236 views

What causes a switch port to receive data not destined for it?

We are having an intermittent fault which is effecting one of our control systems on one of our HP Procurve switches. For some reason, this PLC (10mbit port - 192.168.6.56) which is attached directly ...
5
votes
0answers
50 views

Synology and Active Directory - “no logon servers available”

I have a Synology Diskstation DS412+ here configured for Active Directory authentication on the shared folders. I have a shared folder that our backup software writes backups to (so, CIFS). This all ...
5
votes
3answers
871 views

At rest encryption with a SAN?

I would like to make sure at-rest encryption is done in one place and correctly. If there's shared storage, that seems like the right place rather than DAS. Mainly I'd like to cover the case of ...
4
votes
2answers
732 views

NAS device claims drive in a RAID is degraded but S.M.A.R.T. says it is fine

I have a Synology DS213 with two 600GB drives in RAID 1. Last night the device reported that my second drive had become degraded and that I should replace it. When I ran a extensive S.M.A.R.T. test ...
4
votes
4answers
186 views

Setting up a RAID 5 with expansion in the future in mind

I am setting up a NAS box, but money is a bit short right now. I am planning on getting the box up and running with a boot drive, then 3 for a RAID 5 config with some lower end drives. I was ...
4
votes
6answers
1k views

Will Debian (GNU/kFreeBSD) + official ZFS support be a stable configuration?

Looks like Debian 6.0 (Squeeze) will be supporting ZFS via the official GNU/kFreeBSD kernel. This opens a possibility of converting our Debian GNU/Linux cluster's dedicated NAS server from ...
4
votes
4answers
435 views

Can any hard drive of the same format be put into a hot-swap tray?

I'm looking at buying a hot-swap NAS that supports SATA/SATA II hard drives. Can I get any SATA drive and put it into the hot-swap trays it comes with, or will I need to find a certain kind of drive? ...
4
votes
4answers
19k views

Disk IO slow on ESXi, even slower on a VM (freeNAS + iSCSI)

I have a server with ESXi 5 and iSCSI attached network storage. The storage server has 4x1Tb SATA II disks in Raid-Z on freenas 8.0.4. Those two machines are connected to each other with Gigabit ...
4
votes
2answers
153 views

Can I have two zpools using different ZFS version on one server?

I just upgraded from FreeNAS 0.7.2 to NAS4Free 9.1 and have an old ZFS pool imported. Freenas used ZFS v15 and Nas4free is using v28. I would like to wait a bit before upgrading, but have a new disc I ...
4
votes
3answers
122 views

What qualities to look for in a NAS for short term storage?

Background I work at a research department working with biomedical data and we are currently considering to the revise our IT-structure. We have several instruments that generate GBs of data on a ...
4
votes
4answers
410 views

Our company has 100,000s+ photos, how to store and browse/find these efficiently?

We currently store our photos in a structure like this: folder\1\10000 - 19999.JPG|ORF|TIF (10 000 files) folder\2\20000 - 29999.JPG|ORF|TIF (10 000 files) etc... They are stored on 4 different 2TB ...
4
votes
3answers
459 views

networked storage for a research group, 10-100 TB

this is related to this post: http://serverfault.com/questions/80854/scalable-24-tb-nas-for-research-department but perhaps a little more general. Background: We're a research lab of around 10 ...
4
votes
5answers
657 views

Building a new office NAS solution

Currently, I'm in the process of specifiying a new backup / storage server. At the moment, we have an ailing Netgear ReadyNAS, which is pretty good for some things, but has some big limitations, such ...
4
votes
2answers
1k views

The Network folder specified is currently mapped using a different user name and password

I have a NAS device, it has 3 shares. On one computer I have access to all 3 of the shares. On another computer I keep getting this error when try and add a 2nd one. The Network folder specified is ...
4
votes
3answers
716 views

Can a folder on a NAS be made available as a physical drive in VMWare?

We are currently in the process of moving from a single web server to two load balanced web servers and are facing some challenges we don't quite know how to fix. One of these is that the current ...
4
votes
3answers
4k views

How to map a drive for a windows service?

I am supporting the installation of a CCTV system from the Windows 2003 R2 Standard side of the equation, the intention was to use use a NAS for long term storage (quite a lot of data is generated in ...
4
votes
3answers
715 views

What is the BEST NAS RAID Config for this Box?

I am looking at building a NAS. 24 X 500GB 2.5" SATA2 7200RPM 16MB cache drives all in a 2U box with 8GB RAM and 4 CPUs. I can go two ways: 1 24+ Port RAID Controller making the whole array one ...
4
votes
1answer
202 views

Linux: echo 3 > /proc/sys/vm/drop_caches takes hours to complete

I have a Thecus N8900 NAS, which is a Linux based file server, providing files via NFS to six clients. For some reason that Thecus support has yet to explain, it runs a script that checks ...
4
votes
2answers
6k views

Understanding the S.M.A.R.T. values from a Synology 1812+ device

I have a Synology 1812+ NAS with 8 3TB drives configured as RAID 5. Its running DSM 4.1. It was purchased to replace USB drives, consolidate storage and short term OS X backups using Time Machine. ...
4
votes
1answer
142 views

What are good options to cluster file servers?

We have a NAS with relatively slow disks that is choking when users are logging in in the morning. We're migrating user home directories and profiles to a newer, faster server, but I was wondering if ...
3
votes
9answers
11k views

Fastest NAS and NAS with the best Performance/price ratio [closed]

What is the fastest (Gbit) NAS available? What NAS has the best price/performance ratio? This is for small servers / home usage
3
votes
5answers
2k views

Recommendations for backup (tape vs. HDD)

We're a relatively small organization (25 users, 9 servers, everything Windows-based) and we've been using tape backup since the beginning; currently we're using Backup Exec to perform the backup. ...
3
votes
4answers
3k views

What is the advantage of using openfiler or freenas over Ubuntu?

Just curious about what the advantage(s) are of using FreeNAS or OpenFiler over Ubnutu for a NAS box. Is it reliability, performance, both?
3
votes
3answers
1k views

DAS or NAS for VMware?

I am going to be implmenting a VMware vSphere 4 setup in our company. At first I had the plans of using a Netgear ReadyNAS business applicance for VM storage via iSCSI. But as I was looking around for ...
3
votes
2answers
1k views

How do I replace a drive on my NAS?

I have a Thecus N8800+ NAS. It has 8 2TB drives and is RAID 6. One of the drives recently has been reported as having bad blocks, though the RAID is still reported as healthy. I want to replace the ...