Скачать презентацию The Storage Brick What to do with
359382d802dc7b4ad2b71d09285a90fb.ppt
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Скачать презентацию The Storage Brick What to do with
Скачать презентацию The Storage Brick What to do with
The Storage Brick & What to do with it harry. mangalam@uci. edu, 824 -0084 email / call for the presentation / followup Detailed Storage Brick report http: //moo. nac. uci. edu/~hjm/sb/ Also at the Research Computing Support Table
Storage Brick in 1 Pic & 30 Words Tyan mobo; 4 Opteron cores, 8 GB RAM, 8 TB in 3 U 3 x. Power Supply, 3 ware or Areca PCIe RAID controller 16 x 500 GB hotswap SATA 3 disks 6 x. Gb ether. NICs. 64 -bit Linux. 1 yr ago, <$10 K
Free/OSS Software and your data. 'Free' != 'worthless'. The internet runs on Free Software. Beware of silly claims of reliability. Be aware of what you can control and what you cannot. Protect what needs to be protected. Institute protection plans for that data. Test them regularly.
Reliability vs Cost like unfunded mandates. "Does this data need $24 per GB storage or will 60¢ per GB suffice? " "How many bytes and how many $? " “Pretty Storage” - Pretty cheap, pretty secure, pretty available, pretty fast, pretty accessible, pretty flexible.
Take home messages Always use a journaling file system. Reiser. FS (v 3) for small files. XFS for large files, also excellent formatting and mount times. If you have hardware RAID, use RAID 6 for everything. Redundancy and performance is very good. If you only have software RAID, use RAID 5 or RAID 6. Use large RAIDs so parity loss is minimized. Areca and 3 ware both very good, very fast. System RAM good. Card RAM less good. readahead is almost not worth thinking about, as long as it's above 1 KB. Little advantage to more than 8 KB. Battery Backup of card is critical for DB transactions, but otherwise not too helpful, especially if the entire is on UPS.
Recent Updates Striping of the RAID is significant. Find the median size of your active files. 64 K is almost always too large. JFS is good, but dropped by IBM. mdadm works well for cheap, slow RAIDs. Reiser 4 is very fast but in prison. Ext 4 is looking better. ZFS (Solaris) starting to look very good.
Protocols? You want Protocols? NFS, SMB/CIFS, Appletalk, AFS, https, rsync, ssh, scp, sftp, webdav, i. SCSI, Ao. E, Fiber. Channel Volume Management via LVM 2 & EVMS Hardware and Software RAIDs of all types. Failover / High Availability / Clustering. Virtualization – VMware, Xen, Virtual. Box Firewalls & NAT masq for multi-homing, DMZ
Filer Packages Appliances ie USR 8700 NAS Appliance Free. NAS – free, simple GUI, BSD-based Openfiler - free, full-featured GUI, Linux-based Open-e - $, sophisticated, ROM-based Naked Linux - free, full-featured (22, 553 pkgs available), partial GUI
Cheap NAS Appliances Linux in BIOS on Freescale CPU. Just say No.
Free. NAS http: //www. freenas. org very small, very fast to install, boots from USB key full administration via web interface Based on small BSD from m 0 n 0 wall firewall Protocol: CIFS (samba) , FTP, NFS, SSH, RSYNC and AFP, i. SCSI target Hard drive: ATA/SATA, SCSI, USB and Firewire Filesystem support: UFS, FAT 32, EXT 2/EXT 3 Software RAID 0, 1 and 5 Local User authentication and Microsoft Domains
Open. Filer http: //www. openfiler. com almost everything that Free. NAS has and more, incl. i. SCSi. much more complete web interface. LDAP/AD auth Can buy pre-installed and configured from a number of companies. Commercial support available.
Open-e http: //www. open-e. com solid-state disk-based system. completely plug & play. like openfiler but commercial. Available on Think. CP products for an additional ~$1 K.
Naked Linux Pros: You control everything ~24, 000 free packages Cons: Ditto.
Backup. PC http: //backppc. sf. net Web-based Perl server uses smb, rsync, tar, file pooling, compression to backup files Lots of users, list runs at an average of 11 postings/day, including the author. In Ver 3, users use a web interface to customize their backup config & restore their own files. Regular & on-demand Full & Incr Backups
rsync client For Win 2 k, Win. XP User fills out web form, submits gets email with rsync zipfile for correct version of Windows. unzips file at top level of C: drive runs a bat file to install rsync as a startup (Win 2 k) or service (Win. XP) That's it. Regular Full and Incr Back We're looking for beta-testers.
Storage Question Would you consider using such Bricks as a service from NACS? For what services? Under what conditions? What cost model? flat $/TB? $/TB/service? (Backup. PC TB's vs NFS TB's) $/TB/CPU
Скачать презентацию The Storage Brick What to do with
359382d802dc7b4ad2b71d09285a90fb.ppt