asteroza + disk   235

Products | Conduant Corporation | Mark5C VLBI Data System
Mark6 modules used on the VLBI data for the first imaged black hole. Very high bandwidth data recording system.
blackhole  image  VLBI  data  recorder  HDD  disk  pack  astronomy  high  performance  storage 
4 days ago by asteroza
Multi Actuator Technology: A New Performance Breakthrough | Seagate Blog
MACH.2 HDD's uses single pivot dual actuator setups so only one head per platter, but half the heads are independent from the other half. As opposed to those old Conner Chinook drives with twin actuators and dual heads. Dual heads would get more reads, but apparently the heads weren't stiff enough, causing vibration issues and early death.
Seagate  dual  actuator  HDD  hard  disk  storage  performance  hardware  electronics  devices 
6 weeks ago by asteroza
Clean Up the WinSxS Folder | Microsoft Docs
On W10, you can actually shrink the SxS folder by cleaning out cruft, though that prevents restoring to old versions.

dism /online /Cleanup-Image /StartComponentCleanup /ResetBase
windows  10  sysadmin  tips  tricks  disk  cleanup 
november 2018 by asteroza
MiniTool Partition Wizard | Best Partition Magic Alternative for Windows PC and Server
This might be useful for increasing system reserved partition size, which sometimes blocks major windows updates, especially on UEFI systems
windows  disk  partion  management  sysadmin  tools  utilities  tips  tricks  move  resize  convert 
november 2018 by asteroza
Sample: Configure UEFI/GPT-Based Hard Drive Partitions by Using Windows PE and DiskPart | Microsoft Docs
hand script for building up GPT/EUFI partitions for windows. Note that the EFI partition really should be on the order of 512MB since recently windows 10 won't do a major update if there is insufficient space in the EFI partition to do a write/replace/delete cycle with new files (gets worse with extra languages)
windows  disk  partition  hand  setup  guide  howto  tutorial  reference  EFI  UEFI  GPT  sysadmin  tips  tricks 
may 2018 by asteroza
stealth/odd: optimized dd
dd using CPU specific pipelining and mmap tricks to speed up copies
linux  CLI  disk  copy  command  optimization  high  performance 
may 2018 by asteroza
High IO latency from simple file copy? |VMware Communities
Hrm, if iscsi max burst is 16MB, setting disk max IO also to 16MB might align...
VMware  ESXi  iSCSi  performance  tuning  disk  IO 
july 2017 by asteroza
Guest Reclaim
Requires guest windows to use thin provisioned aware SCSI driver
VMware  guest  VM  SCSI  UNMAP  disk  space  reclaim  sysadmin  tools  utilities  tricks  SDelete  alternative  Delicious 
october 2016 by asteroza
Storage vMotion to thin disk does not reclaim null blocks (2004155) | VMware KB
But does punchzero change the adapter back to buslogic by default (changing from pvscsi?)
VMware  ESXi  disk  thin  thick  vmkfstools  punchzero  Delicious 
october 2016 by asteroza
terreActive/makeThin: Find thick provisioned VMs and convert them to thin provis...
this script does a thin clone and replace, which is fairly similar to how converter does it. Though using a sdelete and vmkfstools --punchzero will work...
VMware  ESXi  disk  thick  thin  conversion  script  sysadmin  tips  tricks  Delicious 
october 2016 by asteroza
storage area network - Quick format of LUN in Server 2012(R2) hosted on a Thin p...
So temporarily disabling TRIM commands operating on thin provisioned iSCSI LUNs will speed up basic formatting of a block device. Otherwise it will take forever as it inchworms along waiting for delete confirmations while new blocks are allocated on the SAN backend.
iSCSI  TRIM  windows  disk  quick  format  sysadmin  tips  tricks  SAN  storage  Delicious 
august 2016 by asteroza
Clean Your System and Free Disk Space | BleachBit
The preferred file erasure tool of presidential candidates...
file  disk  eraser  sysadmin  tools  utilities  tips  tricks  Delicious 
august 2016 by asteroza
Dmitriy Primochenko Online - Repartition Bad Drive
Slightly shady tool for partitioning out bad sector blocks, if you have no more spare blocks to map out with
HDD  hard  disk  sector  bad  block  mapping  remapping  remap  partition  hide  hidden  sysadmin  tools  utilities  tips  tricks  Delicious 
august 2016 by asteroza
informare: Survival analysis of hard disk drive failure data: Update to Q1 2016
Backblaze data adjusted shows HGST is still great, but this is historical data, and now that HGST 3.5" is now in Toshiba's hands, it will be interesting to see if new Toshiba's are as good.
hard  disk  reliability  HGST  hitachi  toshiba  Delicious 
may 2016 by asteroza
VMware KB: Data drive is inaccessible after Windows GPO update
AD GPO for removable device management may hide VMware disks since when applied, windows thinks hotplug=removable
VMware  ESXi  hotplug  windows  remvable  device  group  policy  bug  sysadmin  tips  tricks  missing  disk  Delicious 
march 2016 by asteroza
Macrium Reflect Free
Hrm, don't wanna get it from due to the adware wrappers...
windows  hard  disk  HDD  cloning  clone  software  sysadmin  tips  tricks  freeware  backup  recovery  partition  resize  migration  move  tools  utilities  restore  image  imaging  shadow  copy  Delicious 
february 2016 by asteroza
winsat disk
Interesting, but starts from 16K for test block size
windows  builtin  performance  benchmark  tools  utilities  sysadmin  tips  tricks  disk  Delicious 
november 2015 by asteroza
IOsnoop is like tcpdump for IO, using ftrace and lots of shell script hackery.
IOsnoop  FTRACE  disk  IO  dump  tools  utilities  performance  analysis  linux  sysadmin  tips  tricks  Delicious 
july 2014 by asteroza
Alternative TrueCrypt Implementations
Yeah, with the TrueCrypt 7.2 fiasco, this is timely advice...
truecrypt  alternative  FDE  full  disk  encryption  hard  software  security  cryptography  Delicious 
may 2014 by asteroza
Tries to force a full disk encryption laptop into hibernation to try to purge encryption keys from RAM before someone tries to do a DMA or cold boot attack to retrieve keys, provided a power or network state change event can be reliably detected...
windows  bitlocker  security  encryption  cryptography  defense  protection  automatic  hibernation  system  change  event  trigger  key  management  YoNTMA  software  opensource  full  disk  FDE  forced  purge  power  network  Delicious 
may 2014 by asteroza
Storage | Xyratex
Ah, the OneStor SP-2584 is their DAS 84 SAS disk enclosure without those pesky motherboards for application servers, but that just means they downgraded an otherwise high end SBB canister.
Xyratex  SBB  hardware  enclosure  OneStor  disk  SP-2584  3.5  chassis  SAS  bay  rackmount  HDD  3.5inch  bridge  devices  hard  84  storage  electronics  Delicious 
february 2013 by asteroza
Storage | Xyratex
OneStor AP-2584 5U 84 disk monster storage server, but kinda proprietary, and it includes 2 NAS/SAN heads for HA.
Xyratex  5U  hardware  disk  3.5  HDD  3.5inch  server  devices  hard  84  storage  electronics  Delicious 
february 2013 by asteroza
FOREMAY - Leading Innovations for SSD and Flash Hard Drives
2TB 2.5" SSD. If you have to ask the price, you probably can't afford it...
2.5  flash  2TB  2.5inch  NAND  hardware  inch  disk  Foremay  SSD  memory  solid  devices  storage  electronics  Delicious 
january 2013 by asteroza
Diskeeper Overview: Increase System Speed, Performance & Reliability
Apparently this has better performance/features over Auslogic Disk Defrag, but isn't free.
utilities  tools  sysadmin  Diskeeper  software  defragmenter  defrag  disk  hard  windows  Delicious 
november 2012 by asteroza
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