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

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OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
4
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5answers
3k views

Identify Disks on SuperMicro server running FreeBSD

I am running on a SuperMicro 2U server with 6 disks in a ZPool. I want to identify each drive bay using the Drive Carrier LED from running a command from a tool in FreeBSD. Is there a way to do this? ...
0
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1answer
3k views

PowerVault MD3000 Password Reset Console Password

I need to reset the password on a Dell PowerVault MD3000. I have the necessary password reset cable and am able to get to the point where I am prompted for the "password from Dell Technical Support" ...
3
votes
1answer
2k views

What is the maximum drive size compatible with the H700 Raid controller for Dell Servers?

I am thinking of stuffing twelve 6 TB drives on my R510 server. I know the latest firmware for the H700 controller support more than 2 TB. However, there is no clear documentation on what is the ...
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2answers
48 views

What is the maximum ProLiant DL580 G3 SCSI or SAS drive capacity, and are only HP drives permitted?

I was recently given a free HP ProLiant DL580 G3 configured for SCSI drives from out of a datacenter. I understand that this is an older unit, and reliability may be questionable at best, but in my ...
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3answers
3k views

Maximum Size Limit for CIFS Share Accessed by Windows Server 2003 (32 bit) Client?

We have a CIFS share being served out by a NETAPP appliance. The CIFS share has grown to over 2 TB in size. A Windows Server 2003 32 bit-client accesses the share. Lets say, for example, the ...
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2answers
780 views

Intel RAID Web Console 2 and ESXi 5

I have two ESXi servers with Intel SRCSASBB8I RAID controller. When those server have installed ESXi 4.1 I was able to manage RAID configuration of those server using Intel RAID Web Console 2 running ...
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2answers
46 views

Tricks to simulate spinning drive performance on a SSD? [closed]

I have some clients complaining about performance of some of my software, related to disk usage. My development computer has nice SSD's and is very fast - they have slow spinning hard drives I would ...
4
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2answers
77 views

Identify which drives belong to a specific HP RAID 5 Group

A total of 32 drives were removed from x4 decommissioned HP DL380 G6 servers (eight per server). The setup of the eight drives per host was into two RAID Groups: RAID 1 = SLOT 1, 2 = ESXi OS RAID 5 = ...
4
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1answer
3k views

How to reliably map vSphere disks <-> Linux devices

Task at hand After a virtual disk has been added to a Linux VM on vSphere 5, we need to identify the disks in order to automate the LVM storage provision. The virtual disks may reside on different ...
1
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2answers
47 views

RAID 6 - any write amplification in 4-drive RAID?

We're planning to move from a 4-drive RAID6 to a SSD RAID 1, and I was analyzing smartctl data to see how many GB we've writen to the drives over the past year so I can estimate the lifetime of the ...
2
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1answer
280 views

iSCSI target rebooting causes initiators to reboot as well

I'm running a couple of iSCSI Targets with OCFS2. I had to reboot my iSCSI Target (the physical iSCSI Target) due to some hardware changes and it caused all the initiators to reboot. I want to prevent ...
-1
votes
1answer
16 views

GlusterFS: start georeplication [closed]

I have a GlusterFS storage server that is acting as a unique volume / brick server. The volume name is storage. It is an Ubuntu 14.04 server. Now, I have a second server and would like to do geo ...
0
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0answers
31 views

Windows Cluster An error was encountered while determining shared storage

Our SAN manager has added a new disk for our cluster. this is a new 6TB disk that will be used for backup and will be part of a file share. I have put the disk online, initialized it and assigned the ...
1
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1answer
1k 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++ ...
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0answers
14 views

Extended the Disk size of linux cent os guest

I have linux cent os server on the hyper v and with this LInux machines, two VHD are attached, one is the bootable VHD and second is the Storage device. and i am running out of space on the ...
4
votes
1answer
89 views

NetApp Backup Strategy - Snapshots to SnapMirrors to Tape?

In a previous question we discussed the pros and cons of relying exclusively on NetApp snapshots for backups. I now find myself in this situation as our aging legacy Symantec BackupExec tape server ...
-2
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1answer
47 views

Challenges of dealing with large disks/partitions

Currently doing research on creating a new file server. Server will be Linux based (CentOS 7) and will need to have around 8 TB of available space. Samba will be used to share the files. I am trying ...
0
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1answer
54 views

coreos mount cifs or sshfs or any other networked file system

For development I want to mount a file share from my windows dev box inside my CoreOS VM, so I can then mount that volume inside a container. CoreOS doesn't appear to support doing this, and comes ...
1
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2answers
134 views

Optimize Linux file system for reading ~500M small files

We're seeing performance problems on a file system that contains ~500 M files that are relatively small (typically tens of kb) and ~150 K directories. Files access is predominantly reads and writes ...
0
votes
1answer
1k views

Troubleshooting MySQL Performance Issues

Environment: 1 physical machine 8GB RAM some older Core2Duo CPU 1 HDD Windows Vista 64 bit 1 Virtual Machine 16 GB RAM 2 vCPUs Windows 7 64bit Both machines running MySQL 5.5.28 (64Bit) with ...
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1answer
23 views

Expanding Storage by adding a second server? [closed]

I don't know if this is possible "out of the box" but here goes: I have a dedicated Linux server with a LAMP kind of installation. It is being used as a cloud storage. The server is slowly getting ...
0
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1answer
46 views

How to list all files of a partition on linux?

I am running out of disk on my rhel box. I am trying to find all files in /dev/sda2. Do we have a command which can give all files (ideally, with size) in filesystem /dev/sda2? /dev/sda2 31297508 ...
2
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1answer
23 views

NetApp - Snapshot Full

I am seeing a bunch of Snapshot Full warning events being generated recently from various volumes on our filers: A Warning event at 22 Jun 10:03 Alaskan Daylight Time on Snapshot ...
4
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1answer
39 views

7-Mode snapmirror status post link change

In a Netapp with a snapmirror relationship to another Netapp in 7-mode, what are my options of checking replication performance through Data Ontap? We upgraded the link and want to know how snapmirror ...
0
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1answer
80 views

RAID1: approx performance difference of 3 active vs. 2 + spare?

My question concerns only Linux software RAID ("md"). I'm going to set up a RAID1 array with three devices. I need to choose between using the third disk as a spare or as an active member of the ...
0
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1answer
65 views

SATA Hard disk on RAID controller does not show on windows, and healthy on BIOS

We have a WIN2012 R2 server (3 x SSD 1T each, 1 x SATA 2TB), each drive is being put on it's own RAID (reads 4 "Adaptec Array SCSI Disk Device) on device manager in windows "disk drives" section ...
2
votes
1answer
24 views

Apache Spark infrastructure - combining compute and storage nodes

I have an infrastructure question around Apache Spark, which I'm looking at rolling out in a greenfield project with (at most) approximately 4 TB of data used for modelling at any given time. ...
0
votes
1answer
16 views

How to show degraded pool under SCVMM?

Does SCVMM show degraded pool information? When a disk, which is part of a storage pool, goes down, therefore changing the pool status, where and how can I see this information under SCVMM? Server ...
10
votes
4answers
18k views

Incredibly low disk performance on HP ProLiant DL385 G7

As a test of the Opteron processor family, I bought a HP DL385 G7 6128 with HP Smart Array P410i Controller - no memory. The machine has 20GB ram 2x146GB 15k rpm SAS + 2x250GB SATA2, both in Raid 1 ...
1
vote
3answers
31 views

How can I enable caching on the RAID card or Hard Disk(s)

I've got a HP ML350 G5 server running 6 disks as two RAID-5 configurations. This server has been notifying me of an empty battery on the E200i card. This seems to result in disabled cache: read and ...
8
votes
2answers
3k views

How to get checksum data integrity on ext4?

On file systems like btrfs you can preform a scrub, which will go though all the data to see if the data still matches the file system checksum. I would like to check the data on ext4 if it is ...
1
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3answers
3k views

HP Smart Array p400i with Intel X25-M 160 SSD

I have a pair of x25-M 160 Intel SSD's in an HP DL360 G5 with a p400i Smart Array running 512 BBWC. The disk performance I am getting on this box and another identical one does not come close to ...
2
votes
0answers
37 views

why are zfs on linux transfer rtates reported incorrectly after expanding array?

I have upgraded the drives in a 4 drive Raidz array in a NAS server and the array has auto expanded to the new size. In testing transfer rates from the NAS server now I observe that when performing ...
1
vote
2answers
101 views

How to fix my broken raid10 array

I have a RAID 10 consisting of 4x3TB drives. It had become degraded (sdd had dropped off). I thought I had fixed it and it was rebuilding, but now (I think) sde appears to be causing problems. ...
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2answers
40 views

Converting from RAID 1 to RAID 0

We have 2 x 600GB SAS 15K drives configured in RAID 1 through a PERC H710 RAID controller in a PowerEdge R620. Question. Can we convert this to RAID 0 without having need for a OS reinstall? If so, ...
0
votes
0answers
35 views

How to disable fibre channel LUNs entirely while doing an OS install?

SL 6.5 (aka RHEL 6.5) using a Qlogic adapter in a Dell R610. The module that is loaded is qla2xxx but also scsi_transport_fc. I have 2 SAS disks in RAID 1 for the OS and several FC LUNs for data ...
2
votes
0answers
19 views

S3 + Cloudflare vs S3 + 2 Web Server + Cloudflate

Currently, I run two websites and each site own it own big server. Currently, all of those two sites has roughly 300GB of images. Its grow rate is 15GB of images per month. I know that eventually, one ...
2
votes
3answers
219 views

Local attached storage versus NAS

I currently have 3 old NT File Servers that are about to die, which have no disk level redundancy. We're considering buying drives and attaching them to a newer server that would serve files, but I ...
4
votes
1answer
53 views

Network Filesystem fails during high I/O Speeds

I am a user on a cluster using NFS for our data storage needs. Recently, I have been running a pipeline which has very high I/O during some operations. The program we think is causing the problem is ...
4
votes
0answers
69 views

Windows Server Manager stuck on 'Display will be complete when the server inventory has finished…'

I cannot access Storage Pools in Server Manager because it seems that it's stuck on 'Display will be complete when the server inventory has finished...'. The little blue bar up top keeps running, so ...
2
votes
2answers
1k 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
vote
1answer
29 views

SAS direct dual link connection to an embedded LSI Fusion-MPT controller

This is a hardware question. I have a dual-link SAS hard drive and a Intel S5000XVNSAS motherboard without the drive cage option. Recently, I bought a direct dual-link cable in amazon. But when ...
4
votes
5answers
1k views

Best practices for shared storage between Windows web servers?

I've searched high and low for a whitepaper on storing uploads and serving content (primarily images) via a Windows 2003 web farm, but to no avail. Our hosting facility has a SAN, which we have access ...
0
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2answers
427 views

RAID1 very slow with LSI card and 2x Samsung EVO 850 drives

not sure if I'm checking it correctly, but here is what I have. Desktop, LSI 9260-8i card, see config below. 2x 500Gb Samsung 850 EVO drives. I also have Samsung 830 drive attached to motherboard ...
4
votes
1answer
176 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. ...
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2answers
2k views

ESXi local storage recommendation

We are going to buy HP Proliant Server DL380p Gen8, and we want to run vmware esxi 5.1. but I have problem with choosing the correct storage with the lack of budget. we have choice to buy 4x2TB SATA ...
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votes
1answer
71 views

Data redundancy and routing in the cloud [closed]

How do cloud storage providers (such as Dropbox, Apple iCloud, Evernote etc.) provide redundant data storage, whilst simultaneously routing my query to a server with a corresponding copy of my data. ...
7
votes
3answers
771 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 ...
2
votes
1answer
133 views

Using a JBOD for redundant NFS

I have a Xyratex sp-2224 JBOD enclosure (dual controller) and a pair of Dell servers with SAS HBAs installed that I'm looking to utilize in a redundant NFS cluster. The hardware isn't what I'm ...